private void equipmentTableDataGridView_CellContentClick(object sender, DataGridViewCellEventArgs e) { if (e.ColumnIndex == 4) { DataGridView gv = (DataGridView)sender; DataGridViewRow row = gv.Rows[e.RowIndex]; int itemId = (int)row.Cells["ID"].Value; Form itemDetails = new EquipmentDetails(itemId); itemDetails.Show(); } }