Cancel editing

[Rieni De Rijke]

How can we prevent that the editdialog is showing?

This does not work:

        private void ScheduleView_OnAppointmentEditing(object sender, AppointmentEditingEventArgs e)
        {
            //....
            
           e.Cancel = true;
           e.Handled = true;
        }

[Rieni De Rijke]

Ok, I see that I should use this:

    private void ScheduleView_OnShowDialog(object sender, ShowDialogEventArgs e)
    {
       if ((e.DialogViewModel is AppointmentDialogViewModel))
       {
           e.Cancel = true;
       }
    }

So far, so good.
But when I use this, the OnShowDialog runs twice...

        private void ScheduleView_OnShowDialog(object sender, ShowDialogEventArgs e)
        {
            if ((e.DialogViewModel is AppointmentDialogViewModel))
            {
                e.Cancel = true;
                GoConfirm();
            }
        }

        private void Confirm()
        {
            var appointment = scheduleView.SelectedAppointment as IAppointment;
            if (appointment == null) return;
            
            scheduleView.BeginEdit(appointment);
            appointment.Subject = "Confirmed";
            scheduleView.Commit();
            
        }

[Kalin]

Hi Rieni,

What I can suggest you is to call the Confirm method through Dispatcher, this way you will avoid the explained behavior. Please try the code snippet below:

private void ScheduleView_ShowDialog(object sender, ShowDialogEventArgs e)
{
    if ((e.DialogViewModel is AppointmentDialogViewModel))
    {
        e.Cancel = true;
        this.Dispatcher.BeginInvoke(new Action(Confirm));
    }
}

Hope this helps.

Regards,
Kalin
Telerik