Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.ServiceModel/System/ServiceModel/Activation/VirtualPathExtension.cs

@@ -0,0 +1,45 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+
+namespace System.ServiceModel.Activation
+{
+    using System.ServiceModel.Diagnostics.Application;
+
+    public sealed class VirtualPathExtension : IExtension<ServiceHostBase>
+    {
+        internal VirtualPathExtension(string virtualPath, string applicationVirtualPath, string siteName)
+        {
+            this.VirtualPath = virtualPath;
+            this.ApplicationVirtualPath = applicationVirtualPath;
+            this.SiteName = siteName;
+        }
+
+        public string ApplicationVirtualPath
+        {
+            get;
+            private set;
+        }
+
+        public string SiteName
+        {
+            get;
+            private set;
+        }
+
+        public string VirtualPath
+        {
+            get;
+            private set;
+        }
+
+        public void Attach(ServiceHostBase owner)
+        {
+        }
+
+        public void Detach(ServiceHostBase owner)
+        {
+            throw FxTrace.Exception.AsError(new InvalidOperationException(SR.GetString(SR.Hosting_VirtualPathExtenstionCanNotBeDetached)));
+        }
+    }
+}