DataGridViewButtonColumn ButtonColumn= new DataGridViewButtonColumn();
ButtonColumn.HeaderText = "Button Column ";
ButtonColumn.Text = "Click Me";
ButtonColumn.Name = "btnClickMe";
ButtonColumn.UseColumnTextForButtonValue = true;
dataGridView1.Columns.Add(ButtonColumn);
dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
if (e.ColumnIndex == 1)
{
}
}