protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (e.LeftButton != MouseButtonState.Pressed)
this.dragStartPoint = null;
if (this.dragStartPoint.HasValue)
{
// XamlWriter.Save() has limitations in exactly what is serialized,
// see SDK documentation; short term solution only;
string xamlString = XamlWriter.Save(this.Content);
DragObject dataObject = new DragObject();
dataObject.Xaml = xamlString;
Grid grid = this.Content as Grid;
if (grid != null)
{
RowDefinition row1 = grid.RowDefinitions[0];
RowDefinition row2 = grid.RowDefinitions[1];
double height = row1.ActualHeight + row2.ActualHeight;
this.Height = height;
dataObject.DesiredSize = new Size(this.ActualWidth, this.Height);
}
else
{
dataObject.DesiredSize = new Size(this.ActualWidth, this.ActualHeight);
}
DragDrop.DoDragDrop(this, dataObject, DragDropEffects.Copy);
e.Handled = true;
}
}