DataGridView double underline Cell

Question

How can double underline cell in DataGridView similar to this image?
I want to show total in last row, and total\'s cell in DataGridView should be

Answer 1

You can handle CellPainting event of DataGridView and draw a double border at bottom of the specified row this way:

void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
    if (e.RowIndex == 1 && e.ColumnIndex >= 0)
    {
        e.Paint(e.CellBounds, e.PaintParts);
        e.Graphics.DrawLine(Pens.Black, e.CellBounds.Left,
            e.CellBounds.Bottom - 2, e.CellBounds.Right, e.CellBounds.Bottom - 2);
        e.Graphics.DrawLine(Pens.Black, e.CellBounds.Left,
            e.CellBounds.Bottom - 4, e.CellBounds.Right, e.CellBounds.Bottom - 4);
        e.Handled = true;
    }
}

Also as another option you can set DividerHeight of the the specified row to a larger value:

dataGridView1.Rows[1].DividerHeight = 5; 

In case if you want to set divider height for all rows, before adding rows or before setting data source, set the DividerHeight for RowTemplate, for example:

dataGridView1.RowTemplate.DividerHeight = 5;