RadGrid Client Events OnCommand

[francis]

Hi ,

I have a radgrid with paging enabled on OnCommand of client event i need to display a javascript confirm message box.

The javascript OnCommand method is as follows

function RaiseCommand(sender, args) {
    var result = args.get_commandName();
    if (result == 'Page') {
        if(UnSavedChanges())
        {
            args.set_cancel(true);
        }
    }
}

If command name is Page based on the javascript method "unSavedChanges" that is if true i set cancel to true.

It works as in the data is not displayed of the next page. However the slider moves .
Meaning the slider moves irrespective of whether i set to cancel or not in my case i want the slider to move only is the Method "UnSavedChanges" returns false.

Regards,
Francis P.

[Veli]

Hello Francis,

This is because the slider has already changed its value by the time RadGrid's page command is fired. So, you cannot prevent the slider from changing in the OnCommand grid event.

Veli
the Telerik team

[francis]

Hi Veli,

Thanks for your reply . Is it possible for me to manually run this script of moving the slider back or forward . In my case based on
a condition at the client side i would like the grid to move to the next page . ?

Thanks & Regards,
Francis P.

[Veli]

Hi Francis,

If you change the slider value, RadGrid will page again, because it is bound to slider's value change action. One approach you can take would be to handle RadGrid's server-side PageIndexChanged  event and set e.Canceled = true to prevent the grid from actually paging. The grid will still make a postback to the server, but the page will not change.

Veli
the Telerik team