[Solved] Promt user before creating appointment

[Sergey]

I'm using ScheduleView Drag and Drop demo: http://demos.telerik.com/silverlight/#ScheduleView/DragDrop

How can I show message box to prompt the user before committing the drag and drop from the list box operation? This thread recommends to override CanDrop method. I tried the following code:

public override bool CanDrop(DragDropState state)
{
    bool canDrop = false;
    RadWindow.Confirm("Drop the item here?", (window, closedArgs) =>
        {
            if (closedArgs.DialogResult == true)
            {
                canDrop = true;
            }
        });
    return canDrop;
}

but the message box appears as soon as the user hovers mouse cursor over ScheduleView area while dragging, while I need it to appear only on drop.

Overriding Drop method and returning false prevents appointment from being created, but doesn't return it to the ListBox.

 

[Bernd]

Sergey, did you find a solution to this problem? I am also interested.

[Sergey]

No, Bernd. Still waiting for an answer.

[Bernd]

This link helped me out:
http://www.telerik.com/community/code-library/wpf/scheduleview/how-to-avoid-overlapping-appointments.aspx

In my application the appointments were dragged from one ScheduleView to another one. The following override prevents the source appointment from disappearing in case the drop was canceled (in other case, I have to remove the source appoinment by myself).

public override void DragDropCompleted(DragDropState state)  { }

I think, you should try this with your ListBox.

[Sergey]

Thanks, Bernd! I will try your approach.