Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/UI/IndexedString.cs

@@ -0,0 +1,31 @@
+//------------------------------------------------------------------------------
+// <copyright file="IndexedString.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+namespace System.Web.UI {
+
+    using System;
+
+    [Serializable]
+    public sealed class IndexedString {
+
+        private string _value;
+
+
+        public IndexedString (string s) {
+            if (String.IsNullOrEmpty(s)) {
+                throw new ArgumentNullException("s");
+            }
+            _value = s;
+        }
+
+
+        public string Value {
+            get {
+                return _value;
+            }
+        }
+    }
+}