update vor token

API_NetFramework/VSdoc/msdn2019/chm_msdn2019.css

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+/* CHM (IE11) overrides for msdn2019.css */
+
+/*********** Apply the values of the CSS variables from msdn2019.css explicitly. The CSS variables are not supported in IE 11 used by CHM viewer. */
+/*#region Common */
+
+a {
+    color: #1364c4;
+}
+
+a:visited {
+    color: #1364c4;
+}
+
+/*#endregion Common */
+
+
+
+/*#region HEADER */
+
+
+#header-top-container {
+    background-color: #e3e3e3;
+}
+
+/*#endregion HEADER end */
+
+
+.metadata {
+    color: #5e5e5e;
+}
+
+
+div#footer {
+    background-color: #e3e3e3;
+}
+
+.alert {
+    background-color: #d7eaf8;
+    border: 1px solid #d7eaf8;
+}
+
+/*#region Tables in main text */
+
+div#mainSection table {
+    border: 1px #cccccc solid;
+}
+
+
+div#mainSection table th {
+    border: 1px #cccccc solid;
+    background-color: #e3e3e3;
+}
+
+div#mainSection table td {
+    border: 1px #cccccc solid;
+}
+
+
+/* members list table, no vertical borders*/
+
+div#mainSection table.memberListTable {
+    border-top: 0px #e3e3e3 none;
+    border-bottom: 1px #e3e3e3 solid;
+    border-left: 0px #e3e3e3 none;
+    border-right: 0px #e3e3e3 none;
+}
+
+div#mainSection table.memberListTable th {
+    border-top: 0px #e3e3e3 none;
+    border-bottom: 1px #e3e3e3 solid;
+    border-left: 0px #e3e3e3 none;
+    border-right: 0px #e3e3e3 none;
+}
+
+div #mainSection table.memberListTable td {
+    border-top: 1px #e3e3e3 solid;
+    border-bottom: 1px #e3e3e3 solid;
+    border-left: 0px #e3e3e3 none;
+    border-right: 0px #e3e3e3 none;
+}
+
+
+
+/*#endregion */
+
+
+/*#region Code snippets */
+
+.codeSnippetTabs {
+    height: 1.5rem;
+}
+
+.codeSnippetTab {
+    height: 1.5rem;
+    border-top: 1px solid #e3e3e3;
+    border-bottom: 0px none #e3e3e3;
+    border-left: 1px solid #e3e3e3;
+}
+
+.csFirstTab {
+    border-left: 0px solid #e3e3e3;
+}
+
+.codeSnippetTabLeftCorner, .codeSnippetTabLeftCornerActive {
+    height: 1.5rem;
+    border-top: 1px solid #e3e3e3;
+    border-bottom: 0px none #e3e3e3;
+    border-left: 1px solid #e3e3e3;
+}
+
+.codeSnippetTabRightCorner, .codeSnippetTabRightCornerActive {
+    height: 1.5rem;
+    border-top: 1px solid #e3e3e3;
+    border-bottom: 0px none #e3e3e3;
+    border-right: 1px solid #e3e3e3;
+}
+
+.codeSnippetCodeCollection {
+    border-top: solid 1px #e3e3e3;
+    border-right: solid 1px #e3e3e3;
+    border-bottom: solid 1px #e3e3e3;
+    border-left: solid 1px #e3e3e3;
+}
+
+.codeSnippetToolbar {
+    top: calc(1.5rem * -1);
+}
+
+
+/*#endregion Code snippets */
+
+
+
+/************ Hide breadcrumbs */
+#header-breadcrumbs {
+    display:none;
+}
+
+#headerLinks {
+    display: none;
+}

API_NetFramework/VSdoc/msdn2019/chm_msdn2019.js

@@ -0,0 +1,993 @@
+// #region PAGE INIT ***********************
+
+
+// Event handler attachment
+function registerEventHandler(element, event, handler) {
+    if (element.addEventListener) {
+        element.addEventListener(event, handler, false);
+    } else if (element.attachEvent) {
+        element.attachEvent('on' + event, handler);
+    } else {
+        element[event] = handler;
+    }
+}
+
+
+// Event handler detachment
+function unregisterEventHandler(element, event, handler) {
+    if (typeof element.removeEventListener === "function")
+        element.removeEventListener(event, handler, false);
+    else
+        element.detachEvent("on" + event, handler);
+}
+
+/**
+ * Scroll handler.
+ * @type {function()}
+ */
+function scrollHandler() {
+    inPageTocElementMakeStickyOnScroll();
+}
+
+
+registerEventHandler(window, 'load', init);
+registerEventHandler(window, 'scroll', scrollHandler);
+
+
+/**
+ * Internal in-page sections TOC.
+ * */
+var inPageToc;
+
+
+function init() {
+    try {
+        fixMoniker();
+        mergeCodeSnippets();
+        loadLangFilter();
+        showSelectedLanguages();
+        inPageToc = new InternalToc();  // generate in-page TOC
+        inPageTocElementInitSticky();
+    }
+    catch (e) {
+        var msg = e.message;
+        if (e.stack) {
+            msg = msg + "/n" + e.stack;
+        }
+        (console.error || console.log).call(console, msg);
+    }
+}
+
+
+// #endregion PAGE INIT ***********************
+
+
+// #region INTERNAL TOC **********************
+
+// position:sticky polyfill for IE 11
+
+/**
+ * Initialize position:sticky for #internal-toc-container.stickthis element.
+ * */
+function inPageTocElementInitSticky() {
+    inPageTocElement = document.querySelector('#internal-toc-container.stickthis');
+    inPageTocElementOffset = inPageTocElement.getBoundingClientRect();
+}
+
+var inPageTocElement;
+var inPageTocElementOffset;
+
+/**
+ * Simulate position:sticky for #internal-toc-container.stickthis element.
+ * */
+function inPageTocElementMakeStickyOnScroll() {
+    if (window.pageYOffset > inPageTocElementOffset.top) {
+        inPageTocElement.style.position = 'fixed';
+        inPageTocElement.style.top = 0;
+    } else {
+        inPageTocElement.style.position = 'relative';
+        inPageTocElement.style.top = '';
+    }
+}
+
+// #endregion INTERNAL TOC **********************
+
+
+// #region EXPAND / COLLAPSE SECTION *********************
+
+function toggleSection(sectionLinkElm) {
+    var sectionDiv = sectionLinkElm.parentNode.parentNode.parentNode;
+    if (hasElementClass(sectionDiv, "collapsed")) {
+        expandSection(sectionLinkElm);
+    } else {
+        collapseSection(sectionLinkElm);
+    }
+}
+
+function expandSection(sectionLinkElm) {
+    var sectionDiv = sectionLinkElm.parentNode.parentNode.parentNode;
+    removeClassFromElement(sectionDiv, "collapsed");
+    sectionLinkElm.setAttribute("title", "Collapse");
+}
+
+function collapseSection(sectionLinkElm) {
+    var sectionDiv = sectionLinkElm.parentNode.parentNode.parentNode;
+    addClassToElement(sectionDiv, "collapsed");
+    sectionLinkElm.setAttribute("title", "Expand");
+}
+
+// #endregion EXPAND / COLLAPSE SECTION ***********************
+
+
+
+// #region CODE SNIPPETS **********************
+
+/**
+ * Merges adjacent code snippets in different languages into
+ * single code collection with tabs.  
+ */
+function mergeCodeSnippets() {
+    var allNodes = getElementAndTextNodes(document.body);
+    var parentCodeSnippet = null;
+    var i;
+
+    for (i = 0; i < allNodes.length; i++) {
+        var currentNode = allNodes[i];
+
+        var nextNode;
+        if (!parentCodeSnippet) {
+            // look for the first code snippet which will be a parent
+            if (hasElementClass(currentNode, "codeSnippetContainer")) {
+                parentCodeSnippet = currentNode;
+                // snippet found, move after it
+                nextNode = getNextNonChildElementOrTextNode(parentCodeSnippet);
+                while (allNodes[++i] !== nextNode && i < allNodes.length) { /*empty*/ }
+                i--;
+            }
+
+        } else {
+            // look for the next ADJACENT code snippet
+            if (hasElementClass(currentNode, "codeSnippetContainer")) {
+                // merge it with the parent
+                mergeTwoCodeSnippets(parentCodeSnippet, currentNode);
+                // move after adjacent snippet
+                nextNode = getNextNonChildElementOrTextNode(currentNode);
+                while (allNodes[++i] !== nextNode && i < allNodes.length) { /*empty*/ }
+                i--;
+            } else {
+                // or look for the non-whitespace text
+                if (currentNode.nodeType === TEXT_NODE || currentNode.nodeType === CDATA_SECTION_NODE) {
+                    if (currentNode.nodeValue.trim() !== "") {
+                        // found non empty text after parent snippet, don't merge and find next parent
+                        parentCodeSnippet = null;
+                    }
+                }
+            }
+        }
+
+    }
+}
+
+
+var ELEMENT_NODE = 1;
+var TEXT_NODE = 3;
+var CDATA_SECTION_NODE = 4;
+
+/**
+ * Returns all elements and text nodes under the root.
+ * Recursion is not used due to performance reasons. 
+ * 
+ * @param {HTMLElement} root - The root node.
+ * @returns {Array<Node>} All elements and text nodes under the root.
+ */
+function getElementAndTextNodes(root) {
+    var result = [];
+
+    var node = root.childNodes[0];
+    while (node !== null) {
+        switch (node.nodeType) {
+            case ELEMENT_NODE:
+            case TEXT_NODE:
+            case CDATA_SECTION_NODE:
+                result.push(node);
+                break;
+        }
+
+        if (node.hasChildNodes()) {
+            node = node.firstChild;
+        }
+        else {
+            while (node.nextSibling === null && node !== root) {
+                node = node.parentNode;
+            }
+            node = node.nextSibling;
+        }
+    }
+
+    return result;
+}
+
+
+/**
+ * Merges two separate snippets together. The child snippet
+ * becomes a part of the parent snippet. Tabs and visibility 
+ * are adjusted accordingly.
+ * @param {Node} parentSnippet The parent snippet to merge.
+ * @param {Node} childSnippet The child snippet to merge.
+ */
+function mergeTwoCodeSnippets(parentSnippet, childSnippet) {
+    var childCode = getDivWithClass(childSnippet, "codeSnippetCode");
+    var parentCodeCollection = getDivWithClass(parentSnippet, "codeSnippetCodeCollection");
+    if (childCode && parentCodeCollection) {
+        // remove existing lang code in parent, if any
+        var lang = getLangOfCodeSnippetCode(childCode);
+        if (lang) {
+            var existingCode = getCodeSnippetCodeByLang(parentSnippet, lang);
+            if (existingCode) {
+                existingCode.parentNode.removeChild(existingCode);
+            }
+        }
+        // move child code to the parent
+        childCode.parentNode.removeChild(childCode);
+        parentCodeCollection.appendChild(childCode);
+        showHideTag(childSnippet, false);
+
+        // correct the tabs (bold or normal for N/A lang)
+        var csCode, tab, i;
+        var tabsDiv = getDivWithClass(parentSnippet, "codeSnippetTabs");
+        var langs = ["codeVB", "codeCsharp", "codeCpp", "codeFsharp", "codeJScript"];
+
+        for (i = 0; i < langs.length; i++) {
+            lang = langs[i];
+            csCode = getCodeSnippetCodeByLang(parentCodeCollection, lang);
+            tab = getDivWithClass(tabsDiv, lang);
+            if (csCode) {
+                // lang exists
+                removeClassFromElement(tab, "csNaTab");
+            } else {
+                // lang doesn't exist
+                addClassToElement(tab, "csNaTab");
+            }
+        }
+    }
+}
+
+
+/**
+ * Gets a language of DIV with codeSnippetCode class.
+ * @param {HTMLElement} elm The element with code to inspect.
+ * @return {string}  The language code: "codeVB", "codeCsharp", "codeCpp", "codeFsharp", "codeJScript" or null.
+ */
+function getLangOfCodeSnippetCode(elm) {
+    if (hasElementClass(elm, "codeVB")) {
+        return "codeVB";
+    } else if (hasElementClass(elm, "codeCsharp")) {
+        return "codeCsharp";
+    } else if (hasElementClass(elm, "codeCpp")) {
+        return "codeCpp";
+    } else if (hasElementClass(elm, "codeFsharp")) {
+        return "codeFsharp";
+    } else if (hasElementClass(elm, "codeJScript")) {
+        return "codeJScript";
+    } else {
+        return null;
+    }
+}
+
+
+/**
+ * Gets a DIV with codeSnippetCode class with specified language class.
+ * @param {HTMLElement} containerSnippet The code container element.
+ * @param {string} lang The required language code.
+ * @returns {HTMLElement} The found code element. Null if not found.
+ */
+function getCodeSnippetCodeByLang(containerSnippet, lang) {
+    var divTags = containerSnippet.getElementsByTagName("div");
+    var i;
+    for (i = 0; i < divTags.length; i++) {
+        if (hasElementClasses(divTags[i], new Array("codeSnippetCode", lang))) {
+            return divTags[i];
+        }
+    }
+    return null;
+}
+
+
+/**
+ * Gets the next node which is not a child of specified element and
+ * is whether an element or text node.
+ * @param {Node} nod The base HTML node for which the search will be done.
+ * @returns {Node} The node found or null.
+ * @remark Unlike nextSibling property, this method returns also text nodes.
+ * Moreover, if there is no next sibling, this method goes higher in the hierarchy
+ * and finds the next node.
+ */
+function getNextNonChildElementOrTextNode(nod) {
+    // try next sibling first
+    var res = nod;
+    while ((res = res.nextSibling) !== null) {
+        switch (res.nodeType) {
+            case ELEMENT_NODE:
+            case TEXT_NODE:
+            case CDATA_SECTION_NODE:
+                return res;
+        }
+    }
+
+    // no sibling element or text found, try higher
+    if (nod.parentNode) {
+        return getNextNonChildElementOrTextNode(nod.parentNode);
+    } else {
+        // no node found
+        return null;
+    }
+}
+
+// #endregion CODE SNIPPETS **********************
+
+
+// #region COMMON UTILS **********************
+
+
+/**
+ * Gets the first DIV element which has the specified class.
+ * @param {HTMLElement} parentElm The element where to start searching.
+ * @param {string} className The class name to be found.
+ * @returns {HTMLElement} The found DIV element or null if not found. 
+ */
+function getDivWithClass(parentElm, className) {
+    var divTags = parentElm.getElementsByTagName("div");
+    var i;
+    for (i = 0; i < divTags.length; i++) {
+        if (hasElementClass(divTags[i], className)) {
+            return divTags[i];
+        }
+    }
+    return null;
+}
+
+
+/**
+ * Determines whether an element contains specified CSS class.
+ * @param {HTMLElement} elm The element to test.
+ * @param {string} className The class name to be tested.
+ * @returns {boolean} A value indicating whether the element contains the class.
+*/
+function hasElementClass(elm, className) {
+    if (elm.className) {
+        var classes = elm.className.split(" ");
+        className = className.toLowerCase();
+        var i;
+        for (i = 0; i < classes.length; i++) {
+            if (classes[i].toLowerCase() === className) {
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
+
+/**
+ * Determines whether an element contains all specified CSS classes.
+ * @param {HTMLElement} elm The element to test.
+ * @param {Array<string>} classNames An array of class names.
+ * @returns {boolean} A value indicating whether the element contains the classes.
+ */
+function hasElementClasses(elm, classNames) {
+    if (elm.className) {
+        var classes = elm.className.split(" ");
+        var i, j, found;
+        found = 0;
+        for (j = 0; j < classNames.length; j++) {
+            var className = classNames[j].toLowerCase();
+            for (i = 0; i < classes.length; i++) {
+                var elmClass = classes[i].toLowerCase();
+                if (elmClass === className) {
+                    found++;
+                    break;
+                }
+            }
+        }
+        if (found === classNames.length) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+
+/**
+ * Removes specified CSS class from an element, if any.
+ * @param {HTMLElement} elm The element to process.
+ * @param {string} className The class name to be removed.
+ */
+function removeClassFromElement(elm, className) {
+    if (elm === null) return;
+    if (elm.className) {
+        var classes = elm.className.split(" ");
+        className = className.toLowerCase();
+        var i;
+        for (i = classes.length - 1; i >= 0; i--) {
+            if (classes[i].toLowerCase() === className) {
+                classes.splice(i, 1);
+            }
+        }
+        elm.className = classes.join(" ");
+    }
+}
+
+
+/**
+ * Adds specified CSS class to an element.
+ * @param {HTMLElement} elm The element to process.
+ * @param {string} className The class name to be added.
+ */
+function addClassToElement(elm, className) {
+    if (elm === null) return;
+    if (elm.className) {
+        var classes = elm.className.split(" ");
+        var classNameLow = className.toLowerCase();
+        var i;
+        for (i = classes.length - 1; i >= 0; i--) {
+            if (classes[i].toLowerCase() === classNameLow) {
+                // class already exists
+                return;
+            }
+        }
+        classes[classes.length] = className;
+        elm.className = classes.join(" ");
+    } else {
+        elm.className = className;
+    }
+}
+
+/**
+ * Super fast trim. Faster than pure regex solution.
+ * @returns {string} The trimmed version of the original string.
+ */
+String.prototype.trim = function () {
+    var str = this.replace(/^\s\s*/, ''),
+        ws = /\s/,
+        i = str.length;
+    while (ws.test(str.charAt(--i)));
+    return str.slice(0, i + 1);
+};
+
+
+/**
+ * Gets the specified query parameter value.
+ * @param {string} name Parameter name.
+ * @param {string} url Optional.
+ * @returns {string} The parameter value, an empty string if parameter is present without a value, null id parameter not present.
+ */
+function getQueryParameterByName(name, url) {
+    //const urlParams = new URLSearchParams(window.location.search);    // not supported by IE, not a problem?
+    //const myParam = urlParams.get('myParam');
+
+    if (!url) url = window.location.href;
+    name = name.replace(/[\[\]]/g, '\\$&');
+    var regex = new RegExp('[?&]' + name + '(=([^&#]*)|&|#|$)'),
+        results = regex.exec(url);
+    if (!results) return null;
+    if (!results[2]) return '';
+    return decodeURIComponent(results[2].replace(/\+/g, ' '));
+}
+
+
+/**
+ * Gets the value of a CSS Custom Property (starting with --).
+ * Pass in an element and its CSS Custom Property that you want the value of.
+ * Optionally, you can determine what datatype you get back.
+ *
+ * @param {String} propertyName The name of the custom CSS property, including the leading --.
+ * @param {String} [castAs='string'] The datatype name of the value to be retrieved. Available values are:
+ * 'number', 'int', 'float', 'boolean', 'bool'. Any other or omitted value returns string.
+ * @param {HTMLELement} [element=document.documentElement] The element with the CSS property.
+ * Can be omitted if the property is global, defined inside the ':root { --MyProperty }' rule.
+ * @returns {*} The value of the specified CSS Custom Property.
+ */
+const getCssCustomProperty = function (propertyName, castAs, element) {
+    castAs = castAs || 'string'; // default value if parameter not passed
+    element = element || document.documentElement; // default value if parameter not passed
+
+    // CSS variables are not supported in IE 11 used in CHM.
+    //let response = getComputedStyle(element).getPropertyValue(propertyName);
+    // Instead, use the following representation:
+    //.propertyName_without--prefix:after{
+    //    content: value;
+    //}
+    propertyName = propertyName.substr(2);  // remove -- prefix
+    let response = getStyleRuleValue('.' + propertyName + '::after', 'content');
+    if (response === null) {
+        return "";
+    }
+
+    // Tidy up the string if there's something to work with
+    if (response.length) {
+        response = response.replace(/\'|"/g, '').trim();
+    }
+
+    // Convert the response into a whatever type we wanted
+    switch (castAs) {
+        case 'number':
+        case 'int':
+            return parseInt(response, 10);
+        case 'float':
+            return parseFloat(response, 10);
+        case 'boolean':
+        case 'bool':
+            return response === 'true' || response === '1';
+    }
+
+    // Return the string response by default
+    return response;
+};
+
+
+function getStyleRuleValue(selector, style) {
+    let value = null;
+    selector = selector.toLowerCase();
+    for (let i = 0; i < document.styleSheets.length; i++) {
+        const mysheet = document.styleSheets[i];
+        const myrules = mysheet.cssRules ? mysheet.cssRules : mysheet.rules;
+        for (let j = 0; j < myrules.length; j++) {
+            if (myrules[j].selectorText &&
+                myrules[j].selectorText.toLowerCase() === selector) {
+                value = myrules[j].style[style];
+            }
+        }
+    }
+    return value;
+}  
+
+// #endregion COMMON UTILS **********************
+
+
+
+// #region LANGUAGE FILTER **********************
+
+// Specifies which language tab is shown as default for the first time.
+// Possible values: "codeVB", "codeCsharp", "codeCpp", "codeFsharp", "codeJScript"
+var DEFAULT_LANGUAGE_TO_SHOW = "codeCsharp";
+var languageToShow = DEFAULT_LANGUAGE_TO_SHOW;
+
+function loadLangFilter() {
+    languageToShow = loadSetting("languageToShow", DEFAULT_LANGUAGE_TO_SHOW);
+}
+
+
+function saveLangFilter() {
+    saveSetting("languageToShow", languageToShow);
+}
+
+
+/**
+ * Hides/shows the language sections according to language filter
+ * @param {string} langCode  "VB", "Csharp", "Cpp", "Fsharp", "JScript"
+ */
+function CodeSnippet_SetLanguage(langCode) {
+    languageToShow = "code" + langCode;
+    showSelectedLanguages();
+    saveLangFilter();
+}
+
+
+/**
+ * Gets all code snippets. A snippet is a DIV with class="codeSnippetContainer".
+ * @returns {Array<HTMLElement>} The found code snippets.
+ */
+function getAllCodeSnippets() {
+    var divTags = document.getElementsByTagName("div");
+    var snippets = new Array();
+    var i, j;
+    j = 0;
+    for (i = 0; i < divTags.length; i++) {
+        if (hasElementClass(divTags[i], "codeSnippetContainer")) {
+            snippets[j++] = divTags[i];
+        }
+    }
+    return snippets;
+}
+
+
+/**
+ * Hides/shows the language sections according to the language filter.
+ */
+function showSelectedLanguages() {
+    try {
+        var snippets = getAllCodeSnippets();
+        var i, j, divs, codeCollection, snippet;
+
+        for (i = 0; i < snippets.length; i++) {
+            snippet = snippets[i];
+            if (snippet.style.display !== "none") {
+                var langIsNA = false;
+
+                // set the tabs (active/inactive)
+                var tabsDiv = getDivWithClass(snippet, "codeSnippetTabs");
+                // reset corners
+                var leftCorner, rightCorner;
+                leftCorner = getDivWithClass(tabsDiv, "codeSnippetTabLeftCorner");
+                if (!leftCorner) {
+                    leftCorner = getDivWithClass(tabsDiv, "codeSnippetTabLeftCornerActive");
+                }
+                rightCorner = getDivWithClass(tabsDiv, "codeSnippetTabRightCorner");
+                if (!rightCorner) {
+                    rightCorner = getDivWithClass(tabsDiv, "codeSnippetTabRightCornerActive");
+                }
+                removeClassFromElement(leftCorner, "codeSnippetTabLeftCornerActive");
+                addClassToElement(leftCorner, "codeSnippetTabLeftCorner");
+                removeClassFromElement(rightCorner, "codeSnippetTabRightCornerActive");
+                addClassToElement(rightCorner, "codeSnippetTabRightCorner");
+
+                //  get the tabs
+                divs = tabsDiv.getElementsByTagName("div");
+                var tab;
+                var tabDivs = new Array();
+                for (j = 0; j < divs.length; j++) {
+                    if (hasElementClass(divs[j], "codeSnippetTab")) {
+                        // it's a tab
+                        tab = divs[j];
+                        tabDivs[tabDivs.length] = tab;
+                    }
+                }
+
+                //  activate/deactivate the tabs
+                var tabLink;
+                var visibleTabs = new Array();
+                for (j = 0; j < tabDivs.length; j++) {
+                    tab = tabDivs[j];
+
+                    if (hasElementClass(tab, languageToShow)) {
+                        addClassToElement(tab, "csActiveTab");
+                        tabLink = tab.getElementsByTagName("a")[0];
+                        tabLink.removeAttribute("href");
+                        langIsNA = hasElementClass(tab, "csNaTab");
+                    } else {
+                        removeClassFromElement(tab, "csActiveTab");
+                        var shortLang = getLangOfCodeSnippetCode(tab).substring(4);
+                        tabLink = tab.getElementsByTagName("a")[0];
+                        tabLink.setAttribute("href", "javascript: CodeSnippet_SetLanguage('" + shortLang + "');");
+                    }
+
+                    //  get visible tabs; invisible tabs are: with not supported lang AND not active
+                    if (!(hasElementClass(tab, "csNaTab") && !hasElementClass(tab, "csActiveTab"))) {
+                        // tab is visible
+                        visibleTabs[visibleTabs.length] = tab;
+                    }
+                }
+
+                // fix some styles (first, last) of visible tabs and corners
+                for (j = 0; j < visibleTabs.length; j++) {
+                    tab = visibleTabs[j];
+
+                    removeClassFromElement(tab, "csFirstTab");
+                    removeClassFromElement(tab, "csLastTab");
+                    if (j === 0) {
+                        addClassToElement(tab, "csFirstTab");
+                        if (hasElementClass(tab, "csActiveTab")) {
+                            removeClassFromElement(leftCorner, "codeSnippetTabLeftCorner");
+                            addClassToElement(leftCorner, "codeSnippetTabLeftCornerActive");
+                        }
+                    }
+                    if (j === visibleTabs.length - 1) {
+                        addClassToElement(tab, "csLastTab");
+                        if (hasElementClass(tab, "csActiveTab")) {
+                            removeClassFromElement(rightCorner, "codeSnippetTabRightCorner");
+                            addClassToElement(rightCorner, "codeSnippetTabRightCornerActive");
+                        }
+                    }
+                }
+
+                // show/hide code block
+                codeCollection = getDivWithClass(snippet, "codeSnippetCodeCollection");
+                divs = codeCollection.getElementsByTagName("div");
+                for (j = 0; j < divs.length; j++) {
+                    if (hasElementClass(divs[j], "codeSnippetCode")) {
+                        // it's a code block
+                        if (langIsNA) {
+                            showHideTag(divs[j], hasElementClass(divs[j], "codeNA"));
+                        } else {
+                            showHideTag(divs[j], hasElementClass(divs[j], languageToShow));
+                        }
+                    }
+                }
+
+            }
+        }
+
+    } catch (ex) {
+        // empty
+    }
+}
+
+
+function showHideTag(tag, visible) {
+    try {
+        if (visible) {
+            tag.style.display = "";
+        } else {
+            tag.style.display = "none";
+        }
+    } catch (e) {
+        /*empty*/
+    }
+}
+
+// #endregion LANGUAGE FILTER **********************
+
+
+
+// #region COPY CODE ***************************
+
+function CopyCode(item) {
+    try {
+        // get the visible code block div
+        var codeCollection = item.parentNode.parentNode;
+        var divs = codeCollection.getElementsByTagName("div");
+        var i, shownCode;
+        for (i = 0; i < divs.length; i++) {
+            if (hasElementClass(divs[i], "codeSnippetCode")) {
+                // it's a code block
+                if (divs[i].style.display !== "none") {
+                    shownCode = divs[i];
+                    break;
+                }
+            }
+        }
+
+        if (shownCode) {
+            // get code and remove <br>
+            var code;
+            code = shownCode.innerHTML;
+            code = code.replace(/<br>/gi, "\n");
+            code = code.replace(/<\/td>/gi, "</td>\n");	// syntax highlighter removes \n chars and puts each line in separate <td>
+            code = code.trim();	// remove leading spaces which are unwanted in FF 
+            // get plain text
+            var tmpDiv = document.createElement('div');
+            tmpDiv.innerHTML = code;
+
+            if (typeof tmpDiv.textContent !== "undefined") {
+                // standards compliant
+                code = tmpDiv.textContent;
+            }
+            else if (typeof tmpDiv.innerText !== "undefined") {
+                // IE only
+                code = tmpDiv.innerText;
+            }
+
+            try {
+                // works in IE only
+                window.clipboardData.setData("Text", code);
+            } catch (ex) {
+                popCodeWindow(code);
+            }
+        }
+    } catch (e) {
+        /*empty*/
+    }
+}
+
+
+function popCodeWindow(code) {
+    try {
+        var codeWindow = window.open("",
+            "Copy the selected code",
+            "location=0,status=0,toolbar=0,menubar =0,directories=0,resizable=1,scrollbars=1,height=400, width=400");
+        codeWindow.document.writeln("<html>");
+        codeWindow.document.writeln("<head>");
+        codeWindow.document.writeln("<title>Copy the selected code</title>");
+        codeWindow.document.writeln("</head>");
+        codeWindow.document.writeln("<body bgcolor=\"#FFFFFF\">");
+        codeWindow.document.writeln('<pre id="code_text">');
+        codeWindow.document.writeln(escapeHTML(code));
+        codeWindow.document.writeln("</pre>");
+        codeWindow.document.writeln("<scr" + "ipt>");
+        // the selectNode function below, converted by http://www.howtocreate.co.uk/tutorials/jsexamples/syntax/prepareInline.html 
+        var ftn = "function selectNode (node) {\n\tvar selection, range, doc, win;\n\tif ((doc = node.ownerDocument) && \n\t\t(win = doc.defaultView) && \n\t\ttypeof win.getSelection != \'undefined\' && \n\t\ttypeof doc.createRange != \'undefined\' && \n\t\t(selection = window.getSelection()) && \n\t\ttypeof selection.removeAllRanges != \'undefined\') {\n\t\t\t\n\t\trange = doc.createRange();\n\t\trange.selectNode(node);\n    selection.removeAllRanges();\n    selection.addRange(range);\n\t} else if (document.body && \n\t\t\ttypeof document.body.createTextRange != \'undefined\' && \n\t\t\t(range = document.body.createTextRange())) {\n     \n\t\t \trange.moveToElementText(node);\n     \trange.select();\n  }\n} ";
+        codeWindow.document.writeln(ftn);
+        codeWindow.document.writeln("selectNode(document.getElementById('code_text'));</scr" + "ipt>");
+        codeWindow.document.writeln("</body>");
+        codeWindow.document.writeln("</html>");
+        codeWindow.document.close();
+    } catch (ex) { /*empty*/ }
+}
+
+
+function escapeHTML(str) {
+    return str.replace(/&/g, "&amp;").
+        replace(/>/g, "&gt;").
+        replace(/</g, "&lt;").
+        replace(/"/g, "&quot;");
+}
+
+function selectNode(node) {
+    var selection, range, doc, win;
+    if ((doc = node.ownerDocument) &&
+        (win = doc.defaultView) &&
+        typeof win.getSelection !== 'undefined' &&
+        typeof doc.createRange !== 'undefined' &&
+        (selection = window.getSelection()) &&
+        typeof selection.removeAllRanges !== 'undefined') {
+
+        range = doc.createRange();
+        range.selectNode(node);
+        selection.removeAllRanges();
+        selection.addRange(range);
+    } else if (document.body &&
+        typeof document.body.createTextRange !== 'undefined' &&
+        (range = document.body.createTextRange())) {
+
+        range.moveToElementText(node);
+        range.select();
+    }
+}
+
+// #endregion COPY CODE ***************************
+
+
+
+// #region PERSISTENCE *************************
+
+/**
+ * Sets the cookie value. When an optional argument is omitted, a null is used.
+ * @param {string} name - The name of the cookie.
+ * @param {*} value - The value of the cookie.
+ * @param {Date} [expires] - The expiration date of the cookie (defaults to end of current session).
+ * @param {string} [path] - The path for which the cookie is valid (defaults to path of calling document).
+ * @param {string} [domain] - The domain for which the cookie is valid (defaults to domain of calling document)
+ * @param {boolean} [secure] - Boolean value indicating if the cookie transmission requires a secure transmission
+ */
+function setCookie(name, value, expires, path, domain, secure) {
+    var curCookie = name + "=" + escape(value) +
+        (expires ? "; expires=" + expires.toGMTString() : "") +
+        (path ? "; path=" + path : "") +
+        (domain ? "; domain=" + domain : "") +
+        (secure ? "; secure" : "");
+    document.cookie = curCookie;
+}
+
+/**
+ * Gets the cookie value.
+ * @param {string} name The name of the desired cookie.
+ * @returns {string} A string containing the value of specified cookie or null if cookie does not exist.
+ */
+function getCookie(name) {
+    var dc = document.cookie;
+    var prefix = name + "=";
+    var begin = dc.indexOf("; " + prefix);
+    if (begin === -1) {
+        begin = dc.indexOf(prefix);
+        if (begin !== 0) return null;
+    } else
+        begin += 2;
+    var end = document.cookie.indexOf(";", begin);
+    if (end === -1)
+        end = dc.length;
+    return unescape(dc.substring(begin + prefix.length, end));
+}
+
+
+/**
+ * Deletes a cookie.
+ * @param {string} name - The name of the cookie.
+ * @param {string} [path] - path of the cookie (must be same as path used to create cookie)
+ * @param {string} [domain] - domain of the cookie (must be same as domain used to create cookie)
+ */
+function deleteCookie(name, path, domain) {
+    if (getCookie(name)) {
+        document.cookie = name + "=" +
+            (path ? "; path=" + path : "") +
+            (domain ? "; domain=" + domain : "") +
+            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
+    }
+}
+
+
+/**
+ * Fixes the moniker of the current URL. It's needed for implementation of userData in a CHM.
+ * @returns {boolean} True if the fix (URL replace) was done.
+ */
+function fixMoniker() {
+    var curURL = document.location + ".";
+    var pos = curURL.indexOf("mk:@MSITStore");
+    if (pos === 0) {
+        curURL = "ms-its:" + curURL.substring(14, curURL.length - 1);
+        document.location.replace(curURL);
+        return false;
+    }
+    else { return true; }
+}
+
+
+/**
+ * Detects whether HTML5 localStotage functionality is supported.
+ * @returns {boolean} A value indicating whether HTML5 localStotage functionality is supported.
+ */
+function isLocalStorageSupported() {
+    var str = 'vsdocmanDetectStorage';
+    try {
+        localStorage.setItem(str, str);
+        localStorage.removeItem(str);
+        return true;
+    } catch (e) {
+        return false;
+    }
+}
+
+
+function saveSetting(name, value) {
+    // create an instance of the Date object
+    var now = new Date();
+    // cookie expires in one year (actually, 365 days)
+    // 1000 milliseconds in a second
+    now.setTime(now.getTime() + 365 * 24 * 60 * 60 * 1000);
+    // convert the value to correct String
+    if (value.constructor === Boolean) {
+        if (!value) {
+            value = "";
+        }
+    }
+    // IE returns wrong document.cookie if the value is empty string
+    if (value === "") {
+        value = "string:empty";
+    }
+
+    // try to use localStorage (instead of old-fashioned cookies or userData)
+    if (isLocalStorageSupported()) {
+        localStorage.setItem(name, value);
+        return;
+    }
+
+    // we cannot use cookies in CHM, so try to use behaviors if possible
+    var headerDiv;	// we can use any particular DIV or other element
+    headerDiv = document.getElementById("header");
+    if (headerDiv.addBehavior) {
+        headerDiv.style.behavior = "url('#default#userData')";
+        headerDiv.expires = now.toUTCString();
+        headerDiv.setAttribute(name, value);
+        // Save the persistence data as "helpSettings".
+        headerDiv.save("helpSettings");
+    } else {
+        // set the new cookie
+        setCookie(name, value, now/*, "/"*/);
+    }
+}
+
+
+function loadSetting(name, defaultValue) {
+    var res;
+
+    // try to use localStorage (instead of old-fashioned cookies or userData)
+    if (isLocalStorageSupported()) {
+        res = localStorage.getItem(name);
+    } else {
+        // we cannot use cookies in CHM, so try to use behaviors if possible
+        var headerDiv;	// we can use any particular DIV or other element
+        headerDiv = document.getElementById("header");
+        if (headerDiv.addBehavior) {
+            headerDiv.style.behavior = "url('#default#userData')";
+            headerDiv.load("helpSettings");
+            res = headerDiv.getAttribute(name);
+        } else {
+            // get the cookie
+            res = getCookie(name);
+        }
+    }
+
+    if (res === "string:empty") {
+        res = "";
+    }
+    if (res === null) {
+        res = defaultValue;
+    }
+    return res;
+}
+
+
+// #endregion PERSISTENCE *************************
+
+

API_NetFramework/VSdoc/msdn2019/search.js

@@ -0,0 +1,408 @@
+/**
+ * The array of document details for displayed search results. It is read from multiple small s_XY.js files.
+ * Used when readCommonTitlesFile = false.
+ * A single document info has format: search_result['DocumentId'] = ['Url','Title','Summary'].
+ * 
+ * @type {Array<Array<string>>}
+ * */
+var search_result = [];
+
+/**
+ * The array of document details for displayed search results. It is read from one large summaries s_all.sj file.
+ * Used when readCommonTitlesFile = true.
+ * A single document info has format: search_result['DocumentId'] = ['Url','Title','Summary'].
+ *
+ * @type {Array<Array<string>>}
+ * */
+var _s = [];
+
+/** 
+ * The count of results shown in one step. -1 means unlimited.
+ * @type {number} 
+ * */
+var paginationSize = 25;
+
+/** 
+ * Indicates whether topic titles and summaries are read from one common large file 's_all.js'
+ * or whether each title will be loaded from its own file named 's_TOPIC-ID.js'. 
+ * 
+ * With a huge index, e.g. 20000 topics, the single common file may be quite large. But still it is better
+ * solution, because each loading of a small file with just sibgle topic takes about 100ms, which is 2.5 seconds for 25 results.
+ *
+ * @type {boolean} 
+ * */
+var readCommonTitlesFile = true;
+
+/**
+ * The search terms from the user.
+ * @var {Array.<string>} qterms
+ */
+
+
+/**
+ * Normalizes dots and spaces in a search query string.
+ * @param {string} text The search query text.
+ * @returns {string} Normalized search text.
+ */
+function stripSpaces(text) {
+    //    return text.replace(/^\W+/,'').replace(/\W+$/,'');
+    text = text.replace(/\./g, ' ');	// replace dots with spaces
+    return text.split(" ").join(" ");  // remove multiple spaces
+}
+
+/**
+ * Gets a search match bitmap where a bit at the specified position is set to 1.
+ * A search match bitmap indicates, for which search term (qterm) a match was found
+ * for a specific document.
+ * 
+ * @param {number} setbit A zero-based index of the bit to set to 1.
+ * @param {number} size A size of bitmap, which is the count of the qterms.
+ * @returns {Array.<number>} The bitmap with one bit set.
+ */
+function get_bitmap(setbit, size) {
+    var map = {};
+    for (let i = 0; i < size; ++i) {
+        map[i] = 0;
+    }
+    map[setbit] = 1;
+    return map;
+}
+
+/**
+ * Fills the 'qterms' global variable with the terms from the 'search' query.
+ * */
+function getQtermsFromUrlQuery() {
+    // extract all search terms
+    var query = getQueryParameterByName("search");
+    if (!query || query === "") {
+        return;
+    }
+    var terms = stripSpaces(query.toLowerCase());
+
+    qterms = [];
+    var chunks = terms.split(" ");
+    for (let i in chunks) {
+        if (chunks[i]) {
+            qterms[qterms.length] = chunks[i];
+        }
+    }
+}
+
+/**
+ * Executes a search according to the 'search' query parameter.
+ * 
+ * */
+function search() {
+    // extract all search terms
+    getQtermsFromUrlQuery();
+
+    /** 
+     *  For each document ID that has some match, contains a bitmap of matched terms and cumulative relevance.
+     *  @type {Object.<number, {matchBitmap:Array.<number>, relevance:number} >} */
+    var candidates = {};
+
+    for (let qtermIndex in qterms) {
+        /** @type {string} */
+        let term = qterms[qtermIndex];
+        let onlyWholeWord = false;
+        // Read the user setting, whether he wants to always match whole words, even if no quotes around are used.
+        // The user can define it in the CSS, e.g. in vsdocman_overrides.css:
+        // :root {
+        //        --searchAlwaysWholeWord: true;
+        // }
+        onlyWholeWord = getCssCustomProperty("--searchAlwaysWholeWord", "boolean");	
+        if (term.length > 2 && term.startsWith("\"") && term.endsWith("\"")) {
+            term = term.substr(1, term.length - 2);
+            onlyWholeWord = true;
+        }
+
+        // index= "term1":"[[docId1, relevance1],.., [docIdN, relevanceN]]", ..., "term5":"[[docId1, relevance1],.., [docIdN, relevanceN]]""
+
+        // whole words
+        let termDocs=index[term];	// serialized string (instead of a direct array) for much faster parsing of search_index.js
+        if (termDocs !== undefined) {
+            termDocs = JSON.parse(termDocs); // deserialize
+            for (let i in termDocs) {
+                let docId = termDocs[i][0];
+                let relevance = termDocs[i][1];
+                if (candidates[docId] === undefined) {
+                    candidates[docId] = {};
+                    candidates[docId].matchBitmap = get_bitmap(qtermIndex, qterms.length);
+                    candidates[docId].relevance = relevance;
+                }
+                else {
+                    candidates[docId].matchBitmap[qtermIndex] = 1;
+                    candidates[docId].relevance += relevance;
+                }
+            }
+        }
+
+        // parts of words
+        if (!onlyWholeWord) {
+            for (let indexedTerm in index) {
+                if (indexedTerm.indexOf(term) >= 0) {
+                    termDocs = index[indexedTerm];	// serialized string (instead of a direct array) for much faster parsing of search_index.js
+                	termDocs = JSON.parse(termDocs); // deserialize
+                    for (let i in termDocs) {
+                        let docId = termDocs[i][0];
+                        let relevance = termDocs[i][1];
+                        if (candidates[docId] === undefined) {
+                            candidates[docId] = {};
+                            candidates[docId].matchBitmap = get_bitmap(qtermIndex, qterms.length);
+                            candidates[docId].relevance = relevance;
+                        }
+                        else {
+                            candidates[docId].matchBitmap[qtermIndex] = 1;
+                            candidates[docId].relevance += relevance;
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    let results = [];
+    // sort by relevance in descending order
+    let sortedDocIds = [];
+    for (let key in candidates) sortedDocIds.push(key);
+    sortedDocIds.sort(function (a, b) {
+        return candidates[b].relevance - candidates[a].relevance;
+    });
+    for (let i = 0; i < sortedDocIds.length; i++) {
+        let docIndex = sortedDocIds[i];
+        let on = 1;
+        for (let i in qterms) {
+            on = on && candidates[docIndex].matchBitmap[i];
+        }
+        if (on) {
+            results.push(docIndex);
+        }
+    }
+    let resultsCount = results.length;
+
+    document.getElementById("search-results-heading-count").appendChild(document.createTextNode(resultsCount));   // safe way of setting un-escaped text
+    let sPhrase = getQueryParameterByName("search");
+    sPhrase = "\"" + sPhrase + "\"";
+    document.getElementById("search-results-heading-phrase").appendChild(document.createTextNode(sPhrase));   // safe way of setting un-escaped text
+
+    var appendPromise = loadAndAppendSearchResultItems(results, 0, paginationSize);
+}
+
+
+/**
+ * For specified file indexes range, loads and displays the search results.
+ * @param {Array.<number>} docIds The doc IDs (assigned by the indexer) of all search results.
+ * @param {number} from The index of the first item to append in the docIndexes.
+ * @param {number} count The count of items to append from the docIndexes.
+ * @returns {Promise<number>} A promise that is resolved when the result is displayed. The value is the last file index appended.
+ */
+function loadAndAppendSearchResultItems(docIds, from, count) {
+    var appendPromise = Promise.resolve();  //immediately resolving promise
+    for (let i = from; i < from + count && i < docIds.length; i++) {
+        appendPromise = appendPromise.then(() => loadAndAppendSearchResultItem(docIds[i]));
+    }
+
+    appendPromise = appendPromise.then(() => {
+        if (docIds.length > from + count) {
+            showHidePaginationControls(true, docIds, from+count, count);
+        } else {
+            showHidePaginationControls(false, docIds, 0, 0);
+        }
+        return 0;   // return anything
+    });
+
+    return appendPromise;
+}
+
+
+/**
+ * Shows or hide pagination links.
+ * @param {boolean} show Show or hide.
+ * @param {Array.<number>} docIds The doc IDs (assigned by the indexer) of all search results.
+ * @param {number} nextFrom The index of the next item to append in the docIndexes when the NEXT link is pressed.
+ * @param {number} count The count of items to append from the docIndexes when the NEXT link is pressed..
+ */
+function showHidePaginationControls(show, docIds, nextFrom, count) {
+    let paginationDiv = document.getElementById("search-results-pagination");
+    if (!paginationDiv) {
+        if (show) {
+            // create
+            let parent = document.getElementById("search-results-section");
+            paginationDiv = document.createElement('div');
+            paginationDiv.id = "search-results-pagination";
+            parent.appendChild(paginationDiv);
+
+            let a = document.createElement('a');
+            a.id = "search-pagination-next";
+            a.href = "";
+            a.appendChild(document.createTextNode("Next " + paginationSize + " >>"));   // safe way of setting un-escaped text
+            paginationDiv.appendChild(a);
+
+            a = document.createElement('a');
+            a.id = "search-pagination-all";
+            a.href = "";
+            a.appendChild(document.createTextNode("All >>"));   // safe way of setting un-escaped text
+            paginationDiv.appendChild(a);
+
+        } else {
+            return;
+        }
+    }
+
+    if (show) {
+        paginationDiv.classList.add("visible");
+        // update click actions
+        let a = document.getElementById("search-pagination-next");
+        a.onclick = function () {
+            loadAndAppendSearchResultItems(docIds, nextFrom, count);
+            return false;
+        };
+
+        a = document.getElementById("search-pagination-all");
+        a.onclick = function () {
+            loadAndAppendSearchResultItems(docIds, nextFrom, docIds.length - nextFrom);
+            return false;
+        };
+    } else {
+        paginationDiv.classList.remove("visible");
+    }
+}
+
+
+/**
+ * For a specified file index, loads and displays the search result.
+ * @param {number} fileIndex The search index (assigned by the indexer) of the result file.
+ * @returns {Promise<number>} A promise that is resolved when the result is displayed. The value is fileIndex.
+ */
+function loadAndAppendSearchResultItem(fileIndex) {
+    if (readCommonTitlesFile) {
+        // Read the search result details from one common large file which contains all topics.
+        // This method is much faster over network, but the 's_all.js' file may be quite large
+        // for many, e.g. 20000, topics. So the first search will be slower, then the file will be cached.
+
+        // ensure the file info is loaded
+        return loadScriptOnce("search--/s_all.js")
+            .then(
+                function (scriptWasLoadedNow) {
+                    // the loaded script defines all search results as _s[fileIndex]
+                    let url = _s[fileIndex][0];
+                    let title = _s[fileIndex][1];
+                    let summary = _s[fileIndex][2];
+                    appendSearchResultItem(url, title, summary);
+                    return fileIndex;
+                });
+
+    } else {
+        // Read the search result details from a separate small file, one for each topic.
+        // This method is fast for local pages, but is slow on network, as each load of
+        // a small file takes about 100ms.
+
+        // ensure the file info is loaded
+        return loadScriptOnce("search--/s_" + fileIndex + ".js")
+            .then(
+                function (scriptWasLoadedNow) {
+                    // the loaded script defines search_result[fileIndex]
+                    let url = search_result[fileIndex][0];
+                    let title = search_result[fileIndex][1];
+                    let summary = search_result[fileIndex][2];
+                    appendSearchResultItem(url, title, summary);
+                    return fileIndex;
+                });
+
+    }
+
+}
+
+/**
+ * Appends specified search result to the list of results.
+ * @param {string} url The URL of the search result.
+ * @param {string} title The title of the search result.
+ * @param {string} summary The summary of the search result, if any.
+ */
+function appendSearchResultItem(url, title, summary) {
+    var containerElm = document.getElementById("search-results-container");
+    if (!containerElm) {
+        return;
+    }
+
+    var div = document.createElement('div');
+    div.className = "search-result-item";
+
+    var div2 = document.createElement('div');
+    div2.className = "search-result-title";
+    div.appendChild(div2);
+
+    var a = document.createElement('a');
+    a.href = url;
+    //a.appendChild(document.createTextNode(title));   // safe way of setting un-escaped text
+    a.innerHTML = title;  // 'title' is already HTML encoded
+    div2.appendChild(a);
+
+    div2 = document.createElement('div');
+    div2.className = "search-result-summary";
+    div2.appendChild(document.createTextNode(summary));   // safe way of setting un-escaped text
+    div.appendChild(div2);
+
+    containerElm.appendChild(div);
+}
+
+
+function highlightSearchTerms() {
+    try {
+        colors = ['yellow', 'lightgreen', 'gold', 'orange', 'magenta', 'lightblue'];
+        getQtermsFromUrlQuery();
+        if (qterms !== undefined) {
+            for (let i in qterms) {
+                document.body.innerHTML = doHighlight(document.body.innerHTML, qterms[i], colors[i % colors.length]);
+            }
+        }
+    } catch (ex) { ; }
+}
+
+// from http://www.nsftools.com/misc/SearchAndHighlight.htm
+
+/*
+ * This is the function that actually highlights a text string by
+ * adding HTML tags before and after all occurrences of the search
+ * term. You can pass your own tags if you'd like, or if the
+ * highlightStartTag or highlightEndTag parameters are omitted or
+ * are empty strings then the default <font> tags will be used.
+ */
+function doHighlight(bodyText, searchTerm, color, highlightStartTag, highlightEndTag) {
+    // the highlightStartTag and highlightEndTag parameters are optional
+    if (!highlightStartTag || !highlightEndTag) {
+        highlightStartTag = "<font style='background-color:" + color + ";'>";
+        highlightEndTag = "</font>";
+    }
+
+    // find all occurrences of the search term in the given text,
+    // and add some "highlight" tags to them (we're not using a
+    // regular expression search, because we want to filter out
+    // matches that occur within HTML tags and script blocks, so
+    // we have to do a little extra validation)
+    var newText = "";
+    var i = -1;
+    var lcSearchTerm = searchTerm.toLowerCase();
+    var lcBodyText = bodyText.toLowerCase();
+
+    while (bodyText.length > 0) {
+        i = lcBodyText.indexOf(lcSearchTerm, i + 1);
+        if (i < 0) {
+            newText += bodyText;
+            bodyText = "";
+        } else {
+            // skip anything inside an HTML tag
+            if (bodyText.lastIndexOf(">", i) >= bodyText.lastIndexOf("<", i)) {
+                // skip anything inside a <script> block
+                if (lcBodyText.lastIndexOf("/script>", i) >= lcBodyText.lastIndexOf("<script", i)) {
+                    newText += bodyText.substring(0, i) + highlightStartTag + bodyText.substr(i, searchTerm.length) + highlightEndTag;
+                    bodyText = bodyText.substr(i + searchTerm.length);
+                    lcBodyText = bodyText.toLowerCase();
+                    i = -1;
+                }
+            }
+        }
+    }
+
+    return newText;
+}

API_NetFramework/VSdoc/msdn2019/toc.css

@@ -0,0 +1,181 @@
+#toc-container {
+    font-size: 0.875rem;
+    line-height: 1.3;
+    word-wrap: break-word;
+}
+
+    #toc-container a, #toc-container a:visited {
+        text-decoration: none;
+        color: #000;
+    }
+
+        #toc-container a:hover {
+            text-decoration: underline;
+            color: #1364c4;
+        }
+
+
+    #toc-container .header a {
+    }
+
+.toc-highlighted {
+    background-color: #0065b3 !important;
+    color: #fff !important;
+}
+
+    .toc-highlighted a {
+        color: #fff !important;
+        outline:none;
+    }
+
+#toc-container .item {
+    border: solid 0px #000;
+    padding: 0;
+    margin: 0;
+    margin-left: 1em;
+}
+
+    #toc-container .item.item.expanded {
+        /*padding: 0.25em;*/
+    }
+
+    #toc-container .item > div {
+        border: solid 0px #000;
+        padding: 0;
+        margin: 0;
+        max-height: 0px;
+        font-size: 0px;
+        overflow: hidden;
+    }
+
+    #toc-container .item.animatable > div {
+        transition: all .2s ease;
+    }
+
+    #toc-container .item.collapsed > div {
+        max-height: 0px;
+        font-size: 0px;
+        overflow: hidden;
+        transform: scale(1.0, 0.0);
+        transform-origin: left top;
+        /*opacity: 0;*/
+        /*max-height: 0; 
+    overflow: hidden;
+    padding: 0 !important;
+    border: none !important;*/
+        /*font-size: 0.5rem;
+    transition: all .2s ease 0s;*/
+        /*transition: font-size .2s ease-out 0s;
+    transition: padding .2s ease-out 0s;*/
+    }
+
+    #toc-container .item.expanded > div {
+        max-height: 100%;
+        font-size: 1em;
+        transform: scale(1, 1);
+        transform-origin: left top;
+        /*opacity: 1;*/
+        /*max-height: 1000px;*/ /*real pixel size will be set by JS*/
+        /*font-size: 1rem;
+    transition: all .2s ease-out 0s;*/
+    }
+
+#toc-container .header, #toc-container .leaf {
+    cursor: pointer;
+    padding-left: 6px;
+    padding-bottom: 6px;
+    padding-top: 4px;
+    min-height: 18px;
+    line-height: 18px;
+    white-space: nowrap;
+}
+
+#toc-container .closed::before {
+    content: "\203A";
+    speak: none;
+    display: inline-block;
+    line-height: 16px;
+    text-align: center;
+    direction: ltr;
+    /*font-size: 150%;*/
+    /*padding-right: 0.3em;*/
+    margin-right: 0.3em;
+    -webkit-transform: rotate(0deg);
+    transform: rotate(0deg) scale(1.5,1.5) translateY(-10%);
+}
+
+#toc-container .closed.animatable::before {
+    transition: transform 1.2s ease-out 0s,-webkit-transform .2s ease-out 0s;
+}
+
+
+#toc-container .open::before {
+    content: "\203A";
+    speak: none;
+    display: inline-block;
+    line-height: 16px;
+    text-align: center;
+    direction: ltr;
+    /*font-size: 150%;*/
+    /*vertical-align: middle;*/
+    /*padding-right: 0.3em;*/
+    -webkit-transform: rotate(90deg) scale(1.5,1.5) translateY(-15%);
+    transform: rotate(90deg) scale(1.5,1.5) translateY(-15%);
+    margin-right: 0.3em;
+}
+
+#toc-container .open.animatable::before {
+    transition: transform 1.2s ease-out 0s,-webkit-transform .2s ease-out 0s;
+}
+
+
+#toc-container .leaf {
+}
+
+
+/*#region Internal (in-page sections) TOC */
+
+div#internal-toc-container {
+    padding: 10px;
+    padding-top: 8px;
+}
+
+#internal-toc-heading {
+    display: none;
+}
+
+#internal-toc-heading.visible {
+    display: block;
+    font-size: 1rem;
+}
+
+#internal-toc-definition-localized-text {
+    display: none;
+}
+
+#internal-toc-container ul {
+    padding: 0;
+    margin:0;
+}
+
+#internal-toc-container ul li {
+    list-style: none;
+    border-left: 3px solid var(--secondary-background);
+}
+
+#internal-toc-container ul li.visible {
+    border-left: 3px solid var(--link-color);
+    font-weight: 600;
+}
+
+#internal-toc-container li {
+    line-height: 1.3;
+    font-size: .875rem;
+    padding-top: 4px;
+    padding-right: 0px;
+    padding-bottom: 4px;
+    padding-left: 4px;
+    margin: 0px 0;
+}
+
+/*#endregion Internal (in-page sections) TOC */

API_NetFramework/VSdoc/msdn2019/toc.js

@@ -0,0 +1,470 @@
+
+
+// #region Main TOC
+
+var c = [];
+
+/**
+ * Appends a TOC item under an existing XML element.
+ * @param {HTMLElement} parentElm The parent element for the TOC item to be appended.
+ * @param {Array} tocNode The TOC item to be appended. Format: ['Id','Text','Url',hasChildrenStr=0/1]
+ */
+function appendTocNode(parentElm, tocNode) {
+    var id = tocNode[0];
+    var text = tocNode[1];
+    var url = tocNode[2];
+    var hasChildren = tocNode[3];
+
+    if (hasChildren === 1) {
+        //<div id="id" class="header closed" onclick="toggle('cID',this)">
+        //    <a href="url">text</a>
+        //</div>
+        //<div id="cID" class="item collapsed">
+        //  <div id="ciID" class="inner-for-height">
+        //  </div>
+        //</div>
+        var div1 = document.createElement('div');
+        div1.id = id;
+        div1.className = "header closed";
+        div1.onclick = function () { toggle("c" + id, div1); };
+
+        if (url !== "") {
+            var a1 = document.createElement('a');
+            a1.href = url;
+            a1.setAttribute('title', text);
+            //a1.innerHTML = text;
+            a1.appendChild(document.createTextNode(text));   // safe way of setting un-escaped text
+
+            div1.appendChild(a1);
+        } else {
+            //div1.innerHTML = text;
+            div1.appendChild(document.createTextNode(text));   // safe way of setting un-escaped text
+        }
+
+        var div2 = document.createElement('div');
+        div2.id = "c" + id;
+        div2.className = "item collapsed";
+
+        var div3 = document.createElement('div');
+        div3.id = "ci" + id;
+        div3.className = "inner-for-height";
+
+        div2.appendChild(div3);
+
+        parentElm.appendChild(div1);
+        parentElm.appendChild(div2);
+    } else {
+        //<div id="id" class="leaf"><a href="url">text</a></div>
+        var div = document.createElement('div');
+        div.id = id;
+        div.className = "leaf";
+
+        var a = document.createElement('a');
+        a.href = url;
+        a.setAttribute('title', text);
+        a.appendChild(document.createTextNode(text));   // safe way of setting un-escaped text
+        //a.innerHTML = text;
+
+        div.appendChild(a);
+        parentElm.appendChild(div);
+    }
+}
+
+
+/**
+ * Toggles expansion of a TOC chapter.
+ * @param {string} idSub Id of the DIV container with subtopics.
+ * @param {HTMLElement} elHead The chapter DIV element.
+ */
+function toggle(idSub, elHead) {
+    elHead.classList.add("animatable"); // make header DIV animatable
+    var elSub = document.getElementById(idSub);
+    if (hasElementClass(elSub, "expanded")) {
+        // collapse
+        expandCollapseElement(elSub, false, true);
+
+        if (hasElementClasses(elHead, ["header", "open"])) {
+            removeClassFromElement(elHead, "open");
+            addClassToElement(elHead, "closed");
+        }
+        fitTocHeightToViewport();
+    }
+    else {
+        // expand
+        expandTocItem(elHead.id, true);
+    }
+}
+
+
+/**
+ * 
+ * @param {HTMLElement} element The chapter container outer DIV.
+ * @param {boolean} expand Indicates whether to expand or collapse.
+ * @param {boolean} animationEffects Indicates whether to show animation.
+ */
+function expandCollapseElement(element, expand, animationEffects) {
+    if (expand) {
+        if (animationEffects) {
+            element.classList.add("animatable"); // make container DIV animatable
+        }
+        element.classList.replace('collapsed', 'expanded');
+    } else {
+        if (animationEffects) {
+            element.classList.add("animatable"); // make container DIV animatable
+        }
+        element.classList.replace('expanded', 'collapsed');
+    }
+    return;
+}
+
+
+/**
+ * Returns the element height including margins.
+ * @param {HTMLElement} element The element to test.
+ * @returns {number} The height.
+ */
+function outerHeight(element) {
+    const height = element.offsetHeight;
+    const style = window.getComputedStyle(element);
+
+    return ['top', 'bottom']
+        .map(function (side) { return parseInt(style["margin-" + side]); })
+        .reduce(function (total, side) { return total + side, height; });
+}
+
+
+/**
+ * Expands specified topic chain in the TOC and selects the terminal topic. 
+ * Function works asynchronously (the nodes are dynamically loaded if needed).
+ * @param {Array<Array<string>>} breadcrumbs An array of topic definitions. A single TOC item
+ * has format: ['Id','Text','Url'].
+ * @returns {Promise<string>} A promise that is resolved after all specified nodes are expanded. The value is Id
+ * of the last node.
+ */
+function expandBreadcrumbsInToc(breadcrumbs) {
+    var oldScrollX = window.pageXOffset;
+    var oldScrollY = window.pageYOffset;
+
+    var lastId;
+    var expandPromise = Promise.resolve();  //immediately resolving promise
+    for (i = 0; i < breadcrumbs.length; i++) {
+        var tocNode = breadcrumbs[i];
+        let id = tocNode[0];
+        lastId = id;
+        expandPromise = expandPromise.then(function () { return expandTocItem(id, false) });
+    }
+
+    return expandPromise.then(
+        function () {
+            selectTocItem(lastId);    //last topic in breadcrumbs
+
+            // The TOC expansion could scroll the page a bit. Scroll back to the original position.
+            // On the next frame (as soon as the previous style change has taken effect),
+            // restore the scroll position if it has changed.
+            requestAnimationFrame(function () {
+                window.scrollTo(oldScrollX, oldScrollY);
+            });
+
+            return lastId;
+        }
+    );
+}
+
+
+/**
+ * Expands specified TOC item asynchronously (the child nodes are dynamically loaded if needed).
+ * @param {string} tocItemId The ID of TOC item to expand.
+ * @returns {Promise<string>} A promise that is resolved when the node is expanded. The value is tocItemId.
+ * @param {boolean} animationEffects Indicates whether to show animation.
+ */
+function expandTocItem(tocItemId, animationEffects) {
+    // get the chapter header
+    var elmHead = document.getElementById(tocItemId);
+    if (!elmHead) {
+        return;
+    }
+    if (elmHead.className === "leaf") {
+        return;
+    }
+
+    // get the container with subtopics
+    var elmCont = document.getElementById("c" + tocItemId);
+    if (hasElementClass(elmCont, "collapsed")) {
+        // expand
+        expandCollapseElement(elmCont, true, animationEffects);
+
+        // process also chapter header
+        if (hasElementClasses(elmHead, ["header", "closed"])) {
+            removeClassFromElement(elmHead, "closed");
+            addClassToElement(elmHead, "open");
+        }
+
+    }
+
+    // ensure the child nodes are loaded
+    return loadScriptOnce("toc--/t_" + tocItemId + ".js")
+        .then(
+            function (scriptWasLoadedNow) {
+                if (scriptWasLoadedNow) {
+                    appendChildTocItems(tocItemId);
+                    fitTocHeightToViewport();
+                    return tocItemId;
+                }
+            });
+
+}
+
+
+function appendChildTocItems(parentTocItemId) {
+    // get inner DIV of the container with subtopics
+    var elmCont = document.getElementById("ci" + parentTocItemId);
+    var childrenDefinitions = c[parentTocItemId];    //dynamically loaded from t_ID.js
+    if (elmCont && childrenDefinitions && elmCont.children.length === 0) {
+        for (i = 0; i < childrenDefinitions.length; i++) {
+            appendTocNode(elmCont, childrenDefinitions[i]);
+        }
+    }
+}
+
+
+/**
+ * Selects (focus + highlight) specified TOC item
+ * @param {string} tocItemId The ID of TOC item to select.
+ */
+function selectTocItem(tocItemId) {
+    var linkContainer = document.getElementById(tocItemId);
+
+    var oldSelected = getDivWithClass(document.body, "toc-highlighted");
+    if (oldSelected) {
+        removeClassFromElement(oldSelected, "toc-highlighted");
+    }
+    addClassToElement(linkContainer, "toc-highlighted");
+
+    var links = linkContainer.getElementsByTagName("a");
+    if (links.length > 0) {
+        var link = links[0];
+        //alert(link);
+        //alert(link.innerHTML);
+        if (!isElementVisibleY(link)) {
+            link.scrollIntoView(true);
+        }
+        link.focus();
+    }
+}
+
+
+
+function isElementVisibleY(el) {
+    var rect = el.getBoundingClientRect(), top = rect.top, height = rect.height;
+    el = el.parentNode;
+    // Check if bottom of the element is off the page
+    if (rect.bottom < 0) return false;
+    // Check its within the document viewport
+    if (top > document.documentElement.clientHeight) return false;
+    do {
+        rect = el.getBoundingClientRect();
+        if (top <= rect.bottom === false) return false;
+        // Check if the element is out of view due to a container scrolling
+        if ((top + height) <= rect.top) return false;
+        el = el.parentNode;
+    } while (el !== document.body);
+    return true;
+}
+
+// #endregion Main TOC
+
+
+// #region Internal (in-page) TOC
+
+/**
+ * The InternalTOC class representing a dynamic internal (in-page) TOC for the page sections.
+ * */
+function InternalToc() {
+
+    /**
+    * A single generated TOC item.
+    * @typedef {Object} TocItem
+    * @property {HTMLElement} listItem - The LI element of the TOC item.
+    * @property {HTMLElement} anchor - The link element inside the LI.
+    * @property {HTMLElement} target - The target element on the page.
+    */
+
+    /**
+     * The generated TOC items.
+     * @type Array<TocItem>
+     * */
+    var tocItems;
+
+    // Factor of screen size that the element must cross
+    // before it's considered visible
+    var TOP_MARGIN = 0.0;
+    var BOTTOM_MARGIN = 0.0;
+
+    // IE11 (used in CHM) doesn't have forEach, includes functions used in this class.
+    // Add them.
+    // NodeList.forEach
+    if (window.NodeList && !NodeList.prototype.forEach) {
+        NodeList.prototype.forEach = Array.prototype.forEach;
+    }
+    // Array.includes
+    if (!Array.prototype.includes) {
+        Object.defineProperty(Array.prototype, 'includes', {
+            value: function (searchElement, fromIndex) {
+
+                if (this == null) {
+                    throw new TypeError('"this" is null or not defined');
+                }
+
+                const o = Object(this);
+                // tslint:disable-next-line:no-bitwise
+                const len = o.length >>> 0;
+
+                if (len === 0) {
+                    return false;
+                }
+                // tslint:disable-next-line:no-bitwise
+                const n = fromIndex | 0;
+                let k = Math.max(n >= 0 ? n : len - Math.abs(n), 0);
+
+                while (k < len) {
+                    if (o[k] === searchElement) {
+                        return true;
+                    }
+                    k++;
+                }
+                return false;
+            }
+        });
+    }
+    generateTOC(document.getElementById("internal-toc-container"));
+    registerEventHandler(window, 'scroll', syncSelectedTocItems);
+
+
+    /**
+     * Generates the TOC from the section headings on the page.
+     * @param {any} tocParent The parent element where the TOC will be added.
+     */
+    function generateTOC(tocParent) {
+        if (!tocParent) {
+            return;
+        }
+
+        let pageContent = document.getElementById("mainBody");
+        let headingsAll = pageContent.querySelectorAll('h2, h3, .section_heading, summary-info');
+        let headings = [];
+        let existingIDs = [];
+
+        // Preprocess the headings.
+        headingsAll.forEach(function (heading) {
+            if (heading.id) {
+                existingIDs.push(heading.id);
+            }
+            
+            // Don't show 'Definition' for custom topics.
+            let ignoreHeading = false;
+            if (heading.tagName === "SUMMARY-INFO") {
+                let codeMemberMetadata = pageContent.querySelector('div.metadata');
+                if (codeMemberMetadata === null || codeMemberMetadata.textContent.trim().length=== 0) {
+                    ignoreHeading = true;
+                }
+            }
+            if (!ignoreHeading) {
+                headings.push(heading);
+            }
+        });
+
+        // Ensure each heading has an ID.
+        headings.forEach(function (heading) {
+            if (!heading.id) {
+                let id = heading.textContent.trim().toLowerCase().split(' ').join('-').replace(/[\!\@\#\$\%\^\&\*\(\)\:]/ig, '');
+                if (id.length === 0) {
+                    id = "tocid";
+                }
+                id = generateUniqueID(id, existingIDs);
+                heading.id = id;
+                existingIDs.push(id);
+            }
+        });
+
+        // Create the TOC
+        tocItems = [];
+        if (headings.length > 0) {
+            let tocHeading = document.getElementById("internal-toc-heading");
+            if (tocHeading) {
+                addClassToElement(tocHeading, "visible");
+            }
+
+            let localizedDefinitionText = "Definition";
+            let localizedHiddenElm = document.getElementById("internal-toc-definition-localized-text");
+            if (localizedHiddenElm) {
+                localizedDefinitionText = localizedHiddenElm.textContent;
+            }
+            
+            let olElm = document.createElement("ul");
+            tocParent.appendChild(olElm);
+
+            headings.forEach(function (heading) {
+                let text = heading.tagName === "SUMMARY-INFO" ? localizedDefinitionText : heading.textContent;
+                let aElm = document.createElement("a");
+                aElm.href = "#" + heading.id;
+                aElm.innerHTML = text;
+
+                let liElm = document.createElement("li");
+                liElm.appendChild(aElm);
+                olElm.appendChild(liElm);
+
+                tocItems.push({
+                    listItem: liElm,
+                    anchor: aElm,
+                    target: heading
+                });
+
+            });
+
+        }
+
+        syncSelectedTocItems();
+    }
+
+
+    function generateUniqueID(id, existingIDs) {
+        let newId = id;
+        let i = 1;
+        while (existingIDs.includes(newId)) {
+            i++;
+            newId = id + "_" + i;
+        }
+        return newId;
+    }
+
+
+    function syncSelectedTocItems() {
+        var windowHeight = window.innerHeight;
+        var MINIMUM_VISIBLE_PART = 5; // the minimum required visible part of a section to be considered as visible, in pixels
+
+        var previousItem = null;
+        tocItems.forEach(function (item) {
+            var targetBounds = item.target.getBoundingClientRect();
+
+            if (targetBounds.top < windowHeight - MINIMUM_VISIBLE_PART) {
+                // The heading top is in the viewport or above it.
+                item.listItem.classList.add('visible');
+            }
+            else {
+                item.listItem.classList.remove('visible');
+            }
+
+            // Correct the previous item, that could be marked as visible, but it isn't.
+            if (previousItem && targetBounds.top < MINIMUM_VISIBLE_PART) {
+                // prevous is not visible
+                previousItem.listItem.classList.remove('visible');
+            }
+            previousItem = item;
+
+        });
+
+    }
+
+}
+
+// #endregion Internal (in-page) TOC