給DataGridView中的控制項添加事件和下拉框

 

這裡以給DataGridView添加下拉框，併當下拉框選項發生變化後給DataGridView的其他列賦值為例： 我要實現的功能如下：修改Column1的值時，同時自動修改Column2的值，修改Column4的值時同時修改Column3的值，這就需要給兩個下拉框添加事件，添加的方式如下：private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)          {            //判斷相應的列              if (dataGridView1.CurrentCell.ColumnIndex == 0 && dataGridView1.CurrentCell.RowIndex != -1)              {                  ((ComboBox)e.Control).SelectedIndexChanged += new EventHandler(Form1_SelectedIndexChanged);              }            //判斷相應的列              else if (dataGridView1.CurrentCell.ColumnIndex == 3)              {                  ((ComboBox)e.Control).SelectedIndexChanged += new EventHandler(Form1_SelectedIndexChanged2);              }          }然後寫相應的觸發事件：/// <summary>          /// 組合框事件處理          /// </summary>          /// <param name="sender"></param>          /// <param name="e"></param>         void Form1_SelectedIndexChanged(object sender, EventArgs e)          {              MessageBox.Show(((ComboBox)sender).Text, "Column1");              dataGridView1.Rows[dataGridView1.CurrentCell.RowIndex].Cells[1].Value = "safsafasfdsdf";             //做完處理，須撤銷動態事件              ((ComboBox)sender).SelectedIndexChanged -= new EventHandler(Form1_SelectedIndexChanged);          }         void Form1_SelectedIndexChanged2(object sender, EventArgs e)          {              MessageBox.Show(((ComboBox)sender).Text, "Column4");              dataGridView1.Rows[dataGridView1.CurrentCell.RowIndex].Cells[2].Value = "12334534634";             //做完處理，須撤銷動態事件              ((ComboBox)sender).SelectedIndexChanged -= new EventHandler(Form1_SelectedIndexChanged2);          }就這樣就OK了，這裡需要注意的是處理完後一定要撤銷動態事件，否則會帶來很大的麻煩，效果如下