好吧，正如你问过这个问题一样，这可能会有效你创建了CellMouseEnter事件

Well, as you've asked the question, this 'might' work if you create the CellMouseEnter event

private void dataGridView1_CellMouseEnter(object sender,
    DataGridViewCellEventArgs e)
{
    DataGridViewCell cell = 
            this.dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
    cell.Value = "";

}

但是，我不确定它是否真的需要（想要！=需要） - 如果你在datagridview周围挥动鼠标，这可能会消灭任何/所有细胞



经过一番想法我可能会错误地解释你所问的内容，因此，不是使用CellMouseEnter，而是将上述事件过程中的两行添加到SelectionChanged事件中 - 即

but, Im not sure if its what you actually NEED (want != need) - if you're waving the mouse around your datagridview, this could wipe out any/all cells

after some thought I might be mis-interpreting what you've asked, so, instead of using CellMouseEnter, add the two lines in the event procedure above to the SelectionChanged event - ie

private void dataGridView1_SelectionChanged(object sender,
    DataGridViewCellEventArgs e)
{
    DataGridViewCell cell = 
            this.dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];
    cell.Value = "";

}