DataGridView - Change BackColor of RowHeader on Click

Question

I'm trying to change the color of the row header in a data grid view after clicking.

private void DGV_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
    var row = DGV.Rows[e.RowIndex];
    row.HeaderCell.Style.BackColor = Color.Yellow;
    row.HeaderCell.Style.ForeColor = Color.Yellow;
}

However, the color is never changed?

Answer 1

To show different color than the visual styles color, you need to set EnableHeadersVisualStyles of the DataGridView to false.

If you want row headers show a yellow background color when you select the row, you have a better option than handling click event of the row headers:

dataGridView1.EnableHeadersVisualStyles = false;
dataGridView1.RowHeadersDefaultCellStyle.SelectionBackColor = Color.Yellow;
dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;