DataGridView中comboBox(DataGridViewComboBoxColumn)的事件编写

DataGridView中虽然绑定了一个comboBox，但是这个comboBox没有任何事件。

今天想加一个SelectedIndexChanged事件，遍寻网络后找到一可行方法，总结如下：

view plain·········10········20········30········40········50········60········70········80········90········100·······110·······120·······130·······140·······150DataGridViewComboBoxColumn Fparmrangedesc = new DataGridViewComboBoxColumn();
……
……
dgView.Columns.Add(Fparmrangedesc);
dgView.EditingControlShowing += new DataGridViewEditingControlShowingEventHandler(dgView_EditingControlShowing); //主要是这句

写事件方法
private void dgView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
if (dgvReportParms.CurrentCell.GetType().Name == "DataGridViewComboBoxCell")
{
((ComboBox)e.Control).SelectedIndexChanged -= new EventHandler(ComboBox_SelectedIndexChanged);
((ComboBox)e.Control).SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged);
}
}

private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
//里面想写什么你说了算！
}

最后，最重要的一步：把DataGridView的CausesValidation属性一定要改为false.(这一步是为什么我还没有搞清楚，希望各位高手帮我解释一下！谢谢了！)