Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

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

@@ -0,0 +1,33 @@
+// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
+
+namespace System.Web.Mvc
+{
+    [Serializable]
+    public class ModelError
+    {
+        public ModelError(Exception exception)
+            : this(exception, null /* errorMessage */)
+        {
+        }
+
+        public ModelError(Exception exception, string errorMessage)
+            : this(errorMessage)
+        {
+            if (exception == null)
+            {
+                throw new ArgumentNullException("exception");
+            }
+
+            Exception = exception;
+        }
+
+        public ModelError(string errorMessage)
+        {
+            ErrorMessage = errorMessage ?? String.Empty;
+        }
+
+        public Exception Exception { get; private set; }
+
+        public string ErrorMessage { get; private set; }
+    }
+}