I have been trying to learn how to create a custom error page for my ASP.NET MVC application. I have created a new controller with an action and a new view for this.

public ActionResult Error(int id, string message, string stackTrace)
{
    Response.StatusCode = id;
    ViewBag.Message = message;
    ViewBag.StackTrace = stackTrace;

    return View("~/Views/PaginaErro/PaginaErro.cshtml");
}

And this is the Application_Error method that I have added to the Global.asax.cs:

protected void Application_Error()
{
    Exception exception = Server.GetLastError();

    var httpException = exception as HttpException;

    int httpCode = httpException?.GetHttpCode() ?? (int)HttpStatusCode.InternalServerError;

    Server.ClearError();

    Response.Redirect("~/ErrorPage/Error?id=" + httpCode + "&message=" + HttpUtility.UrlEncode(exception.Message) + "&stackTrace=" + HttpUtility.UrlEncode(exception.StackTrace));
}

Web.config:

<customErrors mode="On" defaultRedirect="~/ErrorPage/Error">
    <error redirect="~/ErrorPage/Error/404" statusCode="404"/>
    <error redirect="~/ErrorPage/Error/500" statusCode="500"/>
</customErrors>

Now, when I receive an error 404, it works perfectly. I hits first the Application_Error method and then after that it goes to the Error action method in the ErrorPageController.

But the issue that I encounter is with the error 500. I can’t find what is causing that. Once it reaches the Response.Redirect, it never goes to my ErrorPageController, it keeps looping in the Application_Error.

The exception.Message of my http 500 error is:

The view ‘Error’ or its master was not found or no view engine supports the searched locations. The following locations were searched:rn~/Areas/Erp/Views/AjusteDeEstoque/Error.aspxrn~/Areas/Erp/Views/AjusteDeEstoque/Error.ascxrn~/Areas/Erp/Views/Shar…

I don’t have a view called Error, so I don’t know why is it searching for that one.

I’m not sure if this helps, but here is my RouteConfig:

public class RouteConfig
{
    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapMvcAttributeRoutes();

        routes.MapRoute(
            name: "Default",
            url: "{controller}/{action}/{id}",
            defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );
    }
}