Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

external/aspnetwebstack/src/System.Web.Mvc/ViewMasterPage`1.cs

@@ -0,0 +1,52 @@
+// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
+
+namespace System.Web.Mvc
+{
+    public class ViewMasterPage<TModel> : ViewMasterPage
+    {
+        private AjaxHelper<TModel> _ajaxHelper;
+        private HtmlHelper<TModel> _htmlHelper;
+        private ViewDataDictionary<TModel> _viewData;
+
+        public new AjaxHelper<TModel> Ajax
+        {
+            get
+            {
+                if (_ajaxHelper == null)
+                {
+                    _ajaxHelper = new AjaxHelper<TModel>(ViewContext, ViewPage);
+                }
+                return _ajaxHelper;
+            }
+        }
+
+        public new HtmlHelper<TModel> Html
+        {
+            get
+            {
+                if (_htmlHelper == null)
+                {
+                    _htmlHelper = new HtmlHelper<TModel>(ViewContext, ViewPage);
+                }
+                return _htmlHelper;
+            }
+        }
+
+        public new TModel Model
+        {
+            get { return ViewData.Model; }
+        }
+
+        public new ViewDataDictionary<TModel> ViewData
+        {
+            get
+            {
+                if (_viewData == null)
+                {
+                    _viewData = new ViewDataDictionary<TModel>(ViewPage.ViewData);
+                }
+                return _viewData;
+            }
+        }
+    }
+}