DataGridView通过右键选中行及更新Index

private void dataGridView1_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
        {
            if (e.Button == MouseButtons.Right)
            {
                if (e.RowIndex > -1)
                {
                    if (!this.dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Selected)
                    {
                        this.dataGridView1.ClearSelection();
                        this.dataGridView1.Rows[e.RowIndex].Selected = true;
                        this.dataGridView1.CurrentCell = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
                    }                
                }
            }
        }

以上代码是CellMouseDown事件触发的

private void dataGridView1_MouseDown(object sender, MouseEventArgs e)
        {
            DataGridView.HitTestInfo rows = this.dataGridView1.HitTest(e.X, e.Y);
            if (e.Button == MouseButtons.Right)
            {
                if (rows.RowIndex > -1)
                {
                    if (!this.dataGridView1.Rows[rows.RowIndex].Cells[rows.ColumnIndex].Selected)
                    {
                        this.dataGridView1.ClearSelection();
                        this.dataGridView1.Rows[rows.RowIndex].Selected = true;
                        this.dataGridView1.CurrentCell = dataGridView1.Rows[rows.RowIndex].Cells[rows.ColumnIndex];
                    }
                }

            }
        }

这个是MouseDown事件触发

实现右击选中整行，并改变CurrentRow.Index为选中的那一行