I have a custom exception that gets thrown in certain cases. When it gets thrown, I want to render a particular view and output it to the response.
Before I begin, yes, I have <customErrors mode="On" /> in my root-level Web.config.
I am doing almost exactly what Darin suggested in this answer:
public class EntityNotFoundHandleErrorAttribute : HandleErrorAttribute {
public override void OnException(ExceptionContext filterContext) {
if (!filterContext.IsChildAction && !filterContext.ExceptionHandled && filterContext.HttpContext.IsCustomErrorEnabled && filterContext.Exception is EntityNotFoundException) {
string controllerName = (string)filterContext.RouteData.Values["controller"];
string actionName = (string)filterContext.RouteData.Values["action"];
HandleErrorInfo model = new HandleErrorInfo(filterContext.Exception, controllerName, actionName);
ViewResult result = new ViewResult {
ViewName = this.View,
ViewData = new ViewDataDictionary<HandleErrorInfo>(model),
TempData = filterContext.Controller.TempData
};
filterContext.Result = result;
filterContext.ExceptionHandled = true;
filterContext.HttpContext.Response.Clear();
filterContext.HttpContext.Response.StatusCode = 500;
filterContext.HttpContext.Response.TrySkipIisCustomErrors = true;
}
}
}
and registering it in FilterConfig.cs (called from Global.asax):
public static void RegisterGlobalFilters(GlobalFilterCollection filters) {
filters.Add(new EntityNotFoundHandleErrorAttribute() {
ExceptionType = typeof(Inspect.Models.EntityNotFoundException),
View = "NotFound",
Order = 2
});
// Commented out just to be sure this isn't screwing it up.
// filters.Add(new Utilities.ElmahHandleErrorAttribute(), 1);
}
The deal is, I can confirm that OnException is running as expected, but the view doesn't display. Instead, I get the unhelpful version of the yellow screen of death that tells me I should use the customErrors="RemoteOnly" if I want to see details.
The kicker is that all of this stuff works if I change the filterContext.Result to a RedirectResult. But I don't want to do that. I just want to write the view to the response.
