Return Error Message to Grid

[Oliver]

How can I return a Custom error for a Grid Operation.

E.g.: If the database delete is not possible show a popup that something is gone wrong.

Controller Method:

[HttpPost]
public ActionResult DestroyEmploymentStatus([DataSourceRequest] DataSourceRequest request, [Bind(Prefix = "models")]List<EmploymentStatusViewModel> employmentStatuses)
{
    if (employmentStatuses.Any())
    {
        foreach (var esvm in employmentStatuses)
        {
            var es = db.EmploymentStatuses.Find(esvm.Id);

            db.EmploymentStatuses.Remove(es);
            db.SaveChanges();
        }
    }

    return Json(employmentStatuses.ToDataSourceResult(request, ModelState));
}

regards

[Rosen]

Hi Oliver,

You can add the error to the ModelState errors collection. The ToDataSource extension method will serialize the errors in the response and on the server you will be able to get the error in the DataSource error event. More detailed information can be found in this helps article.

Regards,
Rosen
Telerik

 

 

[Ralph]

dead link

[Ivan Danchev]

The link has been updated with a valid one. Thank you for pointing this out.

[Debi]

But-- what if I ALSO need to return the total row count for server side paging?

[Stefan]

Hello, Debi,

The ToDataSourceResult method should automatically return the total number of items in the response. This can be observed in our demo, by paging the Grid and checking the response in the network tab:

http://demos.telerik.com/aspnet-mvc/grid



Regards,
Stefan
Progress Telerik