Question

In Winforms DataGridView, how do I:

1. Remove the arrow on the row header? I need to display the row header text, so I can’t simply set RowHeadersVisible = false.
2. Adjust the width of the row header programmatically? I’m setting the row headers by code so I need the width to adjust to show the row header text upon change.

Answer 1

First of all override the function the DataGridView known as

private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
{
    e.PaintHeader(DataGridViewPaintParts.All & ~DataGridViewPaintParts.ContentBackground);
}

On button click add value to row header

private void button1_Click(object sender, EventArgs e)
{
    string a = "khan yousafzai";
    dataGridView1.RowHeadersWidth = dataGridView1.RowHeadersWidth +(7* a.Length);
    dataGridView1.Rows[0].HeaderCell.Value = a;
    dataGridView2.Rows.Add();
}