update 20241211

ADDemo/Form1.cs

@@ -0,0 +1,148 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Data.SqlClient;
+using System.DirectoryServices;
+using System.DirectoryServices.Protocols;
+using System.Drawing;
+using System.IO;
+using System.Linq;
+using System.Net;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+
+namespace ADDemo
+{
+    public partial class Form1 : Form
+    {
+        string Username = "";
+        string ADError = "";
+        public Form1()
+        {
+            InitializeComponent();
+        }
+
+        private void button1_Click(object sender, EventArgs e)
+        {
+            DirectoryEntry de = new DirectoryEntry();
+            Get_User("meyering", ref de);
+        }
+
+        public class UserData
+        {
+            public string Name { get; set; } = "";
+            public string Department { get; set; } = "";
+            public string Office { get; set; }
+
+        }
+
+        private void trylogin()
+        {
+            try
+            {
+                LdapConnection connection = new LdapConnection("ldap.fabrikam.com");
+                NetworkCredential credential = new NetworkCredential("user", "password");
+                connection.Credential = credential;
+                connection.Bind();
+                Console.WriteLine("logged in");
+            }
+            catch (LdapException lexc)
+            {
+                String error = lexc.ServerErrorMessage;
+                Console.WriteLine(lexc);
+            }
+            catch (Exception exc)
+            {
+                Console.WriteLine(exc);
+            }
+
+
+            //---------------------------
+            using (DirectoryEntry adsEntry = new DirectoryEntry(path, strAccountId, strPassword))
+            {
+                using (DirectorySearcher adsSearcher = new DirectorySearcher(adsEntry))
+                {
+                    //adsSearcher.Filter = "(&(objectClass=user)(objectCategory=person))";
+                    adsSearcher.Filter = "(sAMAccountName=" + strAccountId + ")";
+
+                    try
+                    {
+                        SearchResult adsSearchResult = adsSearcher.FindOne();
+                        bSucceeded = true;
+
+                        strAuthenticatedBy = "Active Directory";
+                        strError = "User has been authenticated by Active Directory.";
+                    }
+                    catch (Exception ex)
+                    {
+                        // Failed to authenticate. Most likely it is caused by unknown user
+                        // id or bad strPassword.
+                        strError = ex.Message;
+                    }
+                    finally
+                    {
+                        adsEntry.Close();
+                    }
+                }
+            }
+
+        }
+        private void getusera()
+        {
+            UserData user = new UserData();
+            DirectoryEntry entry = new DirectoryEntry("LDAP://DC=mydomain,DC=local");
+            using (DirectorySearcher ds = new DirectorySearcher(entry))
+            {
+                ds.Filter = "(SAMAccountName=" + "myusername" + ")";
+                ds.PropertiesToLoad.Add("displayName");
+                ds.PropertiesToLoad.Add("name");
+                ds.PropertiesToLoad.Add("department");
+                ds.PropertiesToLoad.Add("physicalDeliveryOfficeName");
+                var result = ds.FindOne();
+                if (result != null)
+                {
+                    try
+                    {
+                        user.Name = result.Properties["name"][0].ToString();
+                        user.Department = result.Properties["department"][0].ToString();
+                        user.Office = result.Properties["physicalDeliveryOfficeName"][0].ToString();
+                    }
+                    catch { }
+                }
+            }
+        }
+        public bool Get_User(string Userid, ref DirectoryEntry de)
+        {
+            var enTry = new DirectoryEntry("LDAP://db.debian.org/uid=meyering,ou=users,dc=debian,dc=org");
+            // Dim enTry As DirectoryEntry = New DirectoryEntry("LDAP://db.debian.org/uid=abi,ou=users,dc=example,dc=com")
+
+            var mySearcher = new DirectorySearcher(enTry);
+            mySearcher.Filter = "(SAMAccountName=" + Userid + ")";
+            foreach (System.DirectoryServices.SearchResult resEnt in mySearcher.FindAll())
+            {
+                try
+                {
+                    de = resEnt.GetDirectoryEntry();
+                    Username = de.Properties["givenname"].ToString() + de.Properties["sn"].ToString();
+                    ADError = "";
+                    return true;
+                }
+                catch (Exception ex)
+                {
+                    this.Username = "";
+
+                    this.ADError = ex.Message;
+                    return false;
+                }
+            }
+            return false;
+        }
+
+    }
+
+
+}