Example of editing with Custom Ajax Binding

[Juan Pablo Perez]

I've looking inside the forum but I couldn't find any example of editing with Custom Ajax Binding. 

Does anybody has worked with it?

Thanks in advance.

Juan Pablo

[Daniel]

Hello Juan Pablo,

There aren't example for editing and custom binding because there isn't a difference. I attached a sample project implements this scenario. The only thing that could be causing some problem is if you are using aggregates. The ModelBinder will try to parse the Aggregates parameter and will add a ModelState error which can be avoided by using the Bind attribute e.g.

[GridAction(EnableCustomBinding = true)]
public ActionResult _Update([Bind(Exclude="Aggregates")]GridCommand command, int id)

All the best,
Daniel
the Telerik team

[Juan Pablo Perez]

Thank you very much Daniel. It works great! 

Now I have a problem: Is there any way to send back to the view a flag when there is an error when updating or deleting in order to show a message to ther user saying that action could not be processed?

Juan Pablo

[Daniel]

Hello again Juan Pablo,

By default, all model state errors are serialized and send back with the response. So in order to send a custom message, you can add a ModelState error in the action method when it cannot be processed and show the message on the client in the OnError event. e.g.

//Action
ModelState.AddModelError("errorKey","error message");

function onError(e) {
    if (e.modelState && e.modelState.errorKey) {
        alert(e.modelState.errorKey.errors[0]);
    }
}

All the best,
Daniel
the Telerik team

[Juan Pablo Perez]

Hello Daniel,

It works great! I didn't know Model State were send back .

Thanks a lot.

Kind regards,

Juan Pablo