private void DGV_DragDrop_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
if (e.RowIndex == _DragOver_RowIndex)
{
e.Handled = true;
var rc = DGV.GetRowDisplayRectangle(e.RowIndex, true);
rc.Width = DGV.RowHeadersWidth + DGV.Columns.Cast <DataGridViewColumn>().Where(c => c.Visible).Sum(c => c.Width);
var color = Color.FromArgb(75, DGV.DefaultCellStyle.SelectionBackColor);
using (var br = new HatchBrush(HatchStyle.ForwardDiagonal, color, Color.Transparent))
{
e.Graphics.FillRectangle(br, rc);
}
using (var pen = new Pen(color, 2.0f))
{
rc.Inflate(-1, -1);
e.Graphics.DrawRectangle(pen, rc);
}
}
}