void dgv产品退货申请单_CellDoubleClick(object sender, DataGridViewCellEventArgs e) { if (e.RowIndex >= 0 && e.ColumnIndex >= 0) { 产品退货申请单 form = new 产品退货申请单(mainform, dgv产品退货申请单["退货申请单编号", e.RowIndex].Value.ToString()); form.ShowDialog(); } }