DataGridView右键选中某单元格(C# Winfrom)

1. //添加下面事件 
2. private void DataGridView_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
3.         {
4.             if (e.RowIndex >= 0)
5.             {
6.                 if (e.Button == System.Windows.Forms.MouseButtons.Right)
7.                 {
8.                    dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Selected = true;
9.                     dataGridView1.ClearSelection();
11.                 }
12.             }
13.