Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/Configuration/RuntimeConfigLKG.cs

@@ -0,0 +1,45 @@
+//------------------------------------------------------------------------------
+// <copyright file="RuntimeConfigLKG.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+using System.Collections;
+using System.Configuration;
+using System.Configuration.Internal;
+using System.Security.Permissions;
+using System.Web;
+using System.Web.Util;
+using System.Web.Hosting;
+using System.Web.Configuration;
+using ClassHttpRuntime=System.Web.HttpRuntime;
+using ClassHostingEnvironment=System.Web.Hosting.HostingEnvironment;
+
+namespace System.Web.Configuration {
+
+    //
+    // RuntimeConfig class that implements LKG functionality.
+    //
+    internal class RuntimeConfigLKG : RuntimeConfig {
+
+        //
+        // Note that if configRecord is null, we are the LKG for the ClientRuntimeConfig.
+        //
+        internal RuntimeConfigLKG(IInternalConfigRecord configRecord) : base(configRecord, true) {}
+
+        [ConfigurationPermission(SecurityAction.Assert, Unrestricted=true)]
+        protected override object GetSectionObject(string sectionName) {
+            if (_configRecord != null) {
+                return _configRecord.GetLkgSection(sectionName);
+            }
+            else {
+                try {
+                    return ConfigurationManager.GetSection(sectionName);
+                }
+                catch {
+                    return null;
+                }
+            }
+        }
+    }
+}