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private void label3_MouseDown(object sender,System.Windows.Forms.MouseEventArgs e)
{
Label aLabel = sender as Label;
Color aColor = aLabel.BackColor;
lblDone.Text = "";
DragDropEffects result =
aLabel.DoDragDrop(aColor, DragDropEffects.None);
if (result != DragDropEffects.All)
{
HowManyDrags--;
lblDragCount.Text = "drag count = " + HowManyDrags.ToString();
}
}