//数据显示中选择删除的行，返回类型是 DataGridViewSelectedRowCollection

　　DataGridViewSelectedRowCollection selectRows = dataGridView1.SelectedRows;

　　　//删除选择到的行
            for (int i = 0; i < selectRows.Count; i++)
            {
                DataGridViewRow row = selectRows[i];
                dataGridView1.Rows.Remove(row);
            }