Asp.Net MVC handle error sample

global.asax

public class WebApiApplication : System.Web.HttpApplication
{
    protected void Application_EndRequest()
    {
        if (Context.Response.StatusCode == 200)
        {
           return;
        }
        Response.Clear();
        Response.ContentType = "text/json";
        Response.Write(JsonConvert.SerializeObject(new {ErrorCode = Context.Response.StatusCode}));
        Response.End();
    }
}