Declare Data table in global; Datatable hold temporary data; DataTable dt = new DataTable(); create column to datatable "dt". dt.Columns.Add("id"); dt.Columns.Add("name"); Create temporary data and stored to datatable "dt"; for (int i = 1; i < 21; i++) { dt.Rows.Add(DateTime.Now.ToString("hhmmssffffff")+"-"+i, "Juan"+i+" Tamad"+i); } Create button in datagridview. DataGridViewButtonColumn btn = new DataGridViewButtonColumn(); dataGridView1.Columns.Add(btn); btn.HeaderText =