Code Block
DataTable datatable = new DataTable();
datatable.Columns.Add("col1");
datatable.Columns.Add("col2");
datatable.Rows.Add("ABC", "bcd");
datatable.Rows.Add("bcd", "ABC");
dataGridView1.DataSource = datatable;
DataGridViewButtonColumn column = new DataGridViewButtonColumn();
column.Width = 100;
column.DefaultCellStyle.Padding = new Padding(5);
dataGridView1.Columns.Add(column);