property to always set multirow select gridcontrol to true devexpress code example

Example: get multi-selected rows gridcontrol devexpress

if (dtData.DataRowCount > 0)
            {
                foreach (int i in dtData.GetSelectedRows())
                {
                    DataRow row = dtData.GetDataRow(i);
                    MessageBox.Show(row[0].ToString());
                }
            }