show throw exception in UI from CustomProvider

[farshid]

Hi

I use gantt chart viewer in my company project.

it's realy perfect but i have some problem with custom provider

i want show a message in UI when something is wrong is customProvider
for example use delete a dependency but in deleteDependency function ,we understand use haven't dependency delete permittion and we throw a exception.

but in UI, dependency line is deleted.

we want show dependency line in UI if delete function return throw exception and show a message to user contain throw message.

[Bozhidar]

Hello,

You can use the following code to prevent the UI from changing and alert when a server exception is thrown:

function pageLoad() {
    $find("RadGantt1")._widget.dependencies.bind("error", function(e) {
        if (e.errors !== false) {
            this.cancelChanges();

            alert("Error");
        }
    })
}

Regards,
Bozhidar
Telerik