Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Web/Configuration/WebConfigurationHostFileChange.cs

@@ -0,0 +1,41 @@
+//------------------------------------------------------------------------------
+// <copyright file="WebConfigurationHostFileChange.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Web.Configuration {
+    using System.Collections;
+    using System.Configuration.Internal;
+    using System.Configuration;
+    using System.Globalization;
+    using System.IO;
+    using System.Reflection;
+    using System.Security;
+    using System.Web;
+    using System.Web.Compilation;
+    using System.Web.Configuration.Internal;
+    using System.Web.Hosting;
+    using System.Web.Util;
+    using System.Xml;
+
+    //
+    // Receives file change notifications from the FileChangesMonitor, 
+    // and forwards them to a callback on a configuration host.
+    //
+    sealed class WebConfigurationHostFileChange {
+        StreamChangeCallback    _callback;
+
+        internal WebConfigurationHostFileChange(StreamChangeCallback callback) {
+            _callback = callback;
+        }
+
+        internal void OnFileChanged(object sender, FileChangeEvent e) {
+            _callback(e.FileName);
+        }
+
+        internal StreamChangeCallback Callback {
+            get {return _callback;}
+        }
+    }
+}