Error executing child request for handler 'System.Web.Mvc.HttpHandlerUtil+ServerExecuteHttpHandlerAsyncWrapper'

 

Hi Folks

I encountered an error during an implementation of ChildActionOnly attribute in a MVC application .This error occurs when you don’t specified an ChildActionOnly attribute on an action of controller.

You can specified an action at View level as shown below :

Index.cshtml

 @Html.Action("ChildAction", "Home", new { param= "first" })

While the code given below placed at action level.

Note: I didn’t decorated the below action with ChildActionOnly.

HomeController:

 

   1:   public ActionResult ChildAction(string param)

   2:          {

   3:              ViewBag.Message = "Child Action called. "+ param;

   4:              return View();

   5:          }

and I decorated an action with  NonAction attribute as shown below:”

   1:   [NonAction]

   2:          public ActionResult ChildAction(string param)

   3:          {

   4:              ViewBag.Message = "Child Action called. "+ param;

   5:              return View();

   6:          }

an error prompts at View level:

 

 

To overcome on error shown above ,Kindly decorate action with childActionOnly attribute as depicted below in image:

 

   1:  [ChildActionOnly]

   2:         public ActionResult ChildAction(string param)

   3:         {

   4:             ViewBag.Message = "Child Action called. "+ param;

   5:             return View();

   6:         }

   7:   

 

Note: This is one of cause to this error.

 

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Categories: MVC