Initial commit

ViewSwitcher.ascx.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+using System.Web.Routing;
+using System.Web.UI;
+using System.Web.UI.WebControls;
+using Microsoft.AspNet.FriendlyUrls.Resolvers;
+
+namespace QW2021C
+{
+    public partial class ViewSwitcher : System.Web.UI.UserControl
+    {
+        protected string CurrentView { get; private set; }
+
+        protected string AlternateView { get; private set; }
+
+        protected string SwitchUrl { get; private set; }
+
+        protected void Page_Load(object sender, EventArgs e)
+        {
+            // Determine current view
+            var isMobile = WebFormsFriendlyUrlResolver.IsMobileView(new HttpContextWrapper(Context));
+            CurrentView = isMobile ? "Mobile" : "Desktop";
+
+            // Determine alternate view
+            AlternateView = isMobile ? "Desktop" : "Mobile";
+
+            // Create switch URL from the route, e.g. ~/__FriendlyUrls_SwitchView/Mobile?ReturnUrl=/Page
+            var switchViewRouteName = "AspNet.FriendlyUrls.SwitchView";
+            var switchViewRoute = RouteTable.Routes[switchViewRouteName];
+            if (switchViewRoute == null)
+            {
+                // Friendly URLs is not enabled or the name of the switch view route is out of sync
+                this.Visible = false;
+                return;
+            }
+            var url = GetRouteUrl(switchViewRouteName, new { view = AlternateView, __FriendlyUrls_SwitchViews = true });
+            url += "?ReturnUrl=" + HttpUtility.UrlEncode(Request.RawUrl);
+            SwitchUrl = url;
+        }
+    }
+}