Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/class/System.Web.Mvc3/Mvc/ChildActionValueProvider.cs

@@ -0,0 +1,35 @@
+namespace System.Web.Mvc {
+    using System;
+    using System.Globalization;
+
+    public sealed class ChildActionValueProvider : DictionaryValueProvider<object> {
+
+        public ChildActionValueProvider(ControllerContext controllerContext)
+            : base(controllerContext.RouteData.Values, CultureInfo.InvariantCulture) {
+        }
+
+        private static string _childActionValuesKey = Guid.NewGuid().ToString();
+
+        internal static string ChildActionValuesKey {
+            get {
+                return _childActionValuesKey;
+            }
+        }
+
+        public override ValueProviderResult GetValue(string key) {
+            if (key == null) {
+                throw new ArgumentNullException("key");
+            }
+
+            ValueProviderResult explicitValues = base.GetValue(ChildActionValuesKey);
+            if (explicitValues != null) {
+                DictionaryValueProvider<object> rawExplicitValues = explicitValues.RawValue as DictionaryValueProvider<object>;
+                if (rawExplicitValues != null) {
+                    return rawExplicitValues.GetValue(key);
+                }
+            }
+
+            return null;
+        }
+    }
+}