Customizing Json from helper

Add Json to Helper
Guarantee SerializerSettings

samples/MvcSample/Home2Controller.cs

@@ -42,12 +42,20 @@ namespace MvcSample
 
         public IActionResult UserJson()
         {
-            return new JsonResult(new User() { Name = "User Name", Address = "Home Address" })
+            return new JsonResult(_user)
             {
                 Encoding = Encoding.UTF8
             };
         }
 
+        public IActionResult HelperUserJson()
+        {
+            JsonResult jsonResult = (JsonResult)Result.Json(_user);
+            jsonResult.Indent = false;
+
+            return jsonResult;
+        }
+
         public User User()
         {
             return _user;

src/Microsoft.AspNet.Mvc/ActionResultHelper.cs

@@ -32,7 +32,7 @@ namespace Microsoft.AspNet.Mvc
 
         public IActionResult Json(object value)
         {
-            throw new NotImplementedException();
+            return new JsonResult(value);
         }
 
         public IActionResult View(string view, ViewData viewData)

src/Microsoft.AspNet.Mvc/ActionResults/JsonResult.cs

@@ -24,6 +24,7 @@ namespace Microsoft.AspNet.Mvc
             Encoding = Encoding.UTF8;
 
             _returnValue = returnValue;
+            _jsonSerializerSettings = CreateSerializerSettings();
         }
 
         public JsonSerializerSettings SerializerSettings
@@ -84,7 +85,7 @@ namespace Microsoft.AspNet.Mvc
             JsonWriter jsonWriter = new JsonTextWriter(new StreamWriter(writeStream, effectiveEncoding));
             if (Indent)
             {
-                jsonWriter.Formatting = Newtonsoft.Json.Formatting.Indented;
+                jsonWriter.Formatting = Formatting.Indented;
             }
 
             return jsonWriter;