Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

external/aspnetwebstack/src/System.Web.Mvc/PartialViewResult.cs

@@ -0,0 +1,30 @@
+// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
+
+using System.Globalization;
+using System.Text;
+using System.Web.Mvc.Properties;
+
+namespace System.Web.Mvc
+{
+    public class PartialViewResult : ViewResultBase
+    {
+        protected override ViewEngineResult FindView(ControllerContext context)
+        {
+            ViewEngineResult result = ViewEngineCollection.FindPartialView(context, ViewName);
+            if (result.View != null)
+            {
+                return result;
+            }
+
+            // we need to generate an exception containing all the locations we searched
+            StringBuilder locationsText = new StringBuilder();
+            foreach (string location in result.SearchedLocations)
+            {
+                locationsText.AppendLine();
+                locationsText.Append(location);
+            }
+            throw new InvalidOperationException(String.Format(CultureInfo.CurrentCulture,
+                                                              MvcResources.Common_PartialViewNotFound, ViewName, locationsText));
+        }
+    }
+}