修改datagirdview单元格值事件？

[pengxin0129]

我在datagirdview中有cells[4]和cells[8]，开始都为空，cells[4]为只读，cells[8]可以点击编辑，要求点击cells[8]填写值之后，cells[8]中的值也赋给cells[4]。我查了一下用CellsValueChange()事件直接
datagridview.rows[e.rowsindex].cells[4].value = datagridview.rows[e.rowsindex].cells[8].value.tostring();
这样子写老是说索引出错，越界。不晓得这个改如何写，请教

[pengxin0129]

[Quote=引用 1 楼 lxcnn 的回复:]
try...


C# code
private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{
dataGridView1.Rows[e.RowIndex].Cells[4].Value = dataGridView1.Rows[e.RowIndex].Cells[8].……
[/Quote]
这个也试过，也的说超过索引范围，不晓得是怎么回事

[-过客-]

断点看一下e.RowIndex是什么，确认一下，这一行是否有Cells[4]和Cells[8]

[wuyq11]

private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
MessageBox.Show(e.RowIndex.ToString());
MessageBox.Show(e.ColumnIndex.ToString());
}
看看RowIndex

[pengxin0129]

[Quote=引用 4 楼 wuyq11 的回复:]
private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
MessageBox.Show(e.RowIndex.ToString());
MessageBox.Show(e.ColumnIndex.ToString());
}
看看RowIndex
[/Quote]

一开始运行就谈出e.rowindex为-1,怎么我还没改变哪个地方的值就运行该事件了。这个改怎么修改呢

[pengxin0129]

private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{

if (e.RowIndex != -1)
{
this.dataGridView1.Rows[e.RowIndex].Cells[8].Value = this.dataGridView1.Rows[e.RowIndex].Cells[11].Value;
}
}
我这么修改就行了。加了个判断

[lzsh0622]

private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{
    if (e.RowIndex >= 0 && e.ColumnIndex == 8)
    {
        this.dataGridView1.Rows[e.RowIndex].Cells[8].Value = this.dataGridView1.Rows[e.RowIndex].Cells[11].Value;
    }
}

[lzsh0622]

private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{
    if (e.RowIndex >= 0 && e.ColumnIndex == 8)
    {
        this.dataGridView1[4, e.RowIndex].Value = this.dataGridView1[8, e.RowIndex].Value;
    }
}

[-过客-]

try...

private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{
    dataGridView1.Rows[e.RowIndex].Cells[4].Value = dataGridView1.Rows[e.RowIndex].Cells[8].Value;
}