#710 – DoDragDrop Is a Blocking Call

When you initiate a drag-and-drop operation by calling DragDrop.DoDragDrop, control will not return from the DoDragDrop method until the drag-and-drop operation has completed.

        private void Label_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
            DataObject data = new DataObject(DataFormats.Text, ((Label)e.Source).Content);

            DragDrop.DoDragDrop((DependencyObject)e.Source, data, DragDropEffects.Copy);

            // Not called until drag-and-drop is done
            ((Label)e.Source).Content = "DragDrop done";

        private void Label_Drop(object sender, DragEventArgs e)
            ((Label)e.Source).Content = (string)e.Data.GetData(DataFormats.Text);



About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

One Response to #710 – DoDragDrop Is a Blocking Call

  1. Pingback: Dew Drop – December 12, 2012 (#1,461) | Alvin Ashcraft's Morning Dew

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