ARCed.Database.Troops.TroopMainForm.XnaPanelDragEnter C# (CSharp) Method

        private void XnaPanelDragEnter(object sender, DragEventArgs e)
        {
            e.Effect = e.Data.GetData(typeof(Enemy)) != null ?
                DragDropEffects.Copy : DragDropEffects.None;
        }