Trapping grid errors correctly

[Randy]

I have a grid on an MVC page, I have an error event as follows:

        .DataSource(dataSource => dataSource
            .Ajax()
            .Batch(false)                                          
            .PageSize(50)                                      
            .Events(events => events.Error("gridErrorHandler"))

My JavaScript function is something like:

function gridErrorHandler(e) {
   ... 
}

I have an MVC method (that returns ActionResult) that throws the following error when an error condition occurs:

return new HttpStatusCodeResult(System.Net.HttpStatusCode.InternalServerError, "Unexpected error");

My question is this. When my MVC method throws an exception, my JS error handler gets called. But, no matter what I try, I'm not able to get at the type of error it is. What exactly is the correct JS code that tells me a 500 error occurred, or a 401 (unauthorized) error occurred, etc.? 

[Konstantin Dikov]

Hi Randy,

If you are handling the exception you could pass it as a ModelState error as shown in the following help article:

• http://docs.telerik.com/aspnet-mvc/helpers/grid/editing/ajax-editing#configuration-ModelState

As for the current approach, the error event argument could be used for retrieving the error message and the error code:

function gridErrorHandler(e) {
   e.errorThrown //the error message
   e.xhr.status // 500, 401, etc.
}

Hope this helps.


Regards,
Konstantin Dikov
Progress Telerik