DataGridView下拉框事件……问题

[linfe369]

DataGridView单元格改成下拉框,然后有加减
运行选中加，那么一个字段中的数据如果是正数:5000,就变成-5000
.请问怎么实现啊.
下拉框的事件一直不明白在哪里

[捷哥1999]

private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
  ComboBox combo = e.Control as ComboBox;
  if (combo != null)
  {
  combo.SelectedIndexChanged +=
  new EventHandler(ComboBox_SelectedIndexChanged);
  }
}

private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
  ComboBox cb=(ComboBox)sender;
  //这里获取到ComboBox对象后，判断对象的
  if(cb.SelectedItem.toString()=="+")
    ....
}

[wuyq11]

private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
if (this.dataGridView1.CurrentCell.OwningColumn.Name == "clmTest")
{
((ComboBox)e.Control).SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged);
}

}

private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
this.dataGridView1.CurrentRow.Cells["name"].Value = ((ComboBox)sender).Text;
}

[jbo126]

你的意思是下拉框里有加减两个项？
如果选择加的话就改变相应字段的值，是不是所有的数字字段都改变？如果选中减呢？

[runsoft_031]

ddddddddddd

[javaoraspx]

去绑定数据源 应该没有事了吧!

[linfe369]

加的话就是正数，减就是负数