datagridviewcomboBox如何在组合框中选择列表的项目

问题描述：

private void comboBoxEx1_SelectedIndexChanged(object sender, EventArgs e)
       {
           Form2 frm2 = new Form2();
           if (comboBoxEx1.SelectedIndex==0)
           {
               frm2.Show();
           }
       }

如果comboBox是datagridview而不是Windows窗体，我该如何使此代码工作?

how can i make this code work if comboBox was of datagridview, not of windows form?

答

您的意思是如果selectedindex = 0表示要显示datagridview吗?如果是这样，那么您可以在条件内使用类似以下内容的内容:

Do you mean that you want to show a datagridview if selectedindex = 0? If that''s true, then you can use inside the condition something like:

datagridview1.Visible = true;

只需确保Visible属性的初始状态为false.

[根据评论更新]
因此，您在datagridview中有一个DataGridViewComboBoxColumn，并且想要捕获所选索引是否发生更改.如果是这样，请尝试以下操作.连线datagridview事件:

EditingControlShowing
CellEndEdit

Just make sure that the initial state of the Visible property is false.

[Update based on comment]
So you have a DataGridViewComboBoxColumn in the datagridview and you want to catch if the selected index is changed. If that''s true, try the following. Wire the datagridview events:

EditingControlShowing
CellEndEdit

// which combobox is wired with a temporary event handler
private ComboBox comboWithEventHandler;

// wire the event handler if edit is started on a comboboxcolumn
private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e) {
   if (e.Control is ComboBox) {
      comboWithEventHandler = ((ComboBox)e.Control);
      comboWithEventHandler.SelectedIndexChanged += new EventHandler(temporary_SelectedIndexChanged);
   }
}

// fired when the combobox selected index changes
void temporary_SelectedIndexChanged(object sender, EventArgs e) {
   MessageBox.Show("Selected index is " + ((ComboBox)sender).SelectedIndex.ToString());
}

// when user moves to another cell detach the event handler
private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e) {
   if (comboWithEventHandler != null) {
      comboWithEventHandler.SelectedIndexChanged -= new EventHandler(temporary_SelectedIndexChanged);
      comboWithEventHandler = null;
   }
}

无效temporary_SelectedIndexChanged(对象发送方，EventArgs e)
{

如果(comboWithEventHandler.SelectedIndex == 0)
{
//MessageBox.Show("Selected index is" +((ComboBox)sender).SelectedIndex.ToString());
Form2 frm2 =新的Form2();
frm2.Show();
}

}
现在正在工作

thnx非常mika wendelius

void temporary_SelectedIndexChanged(object sender, EventArgs e)
{

if (comboWithEventHandler.SelectedIndex==0)
{
// MessageBox.Show("Selected index is " + ((ComboBox)sender).SelectedIndex.ToString());
Form2 frm2 = new Form2();
frm2.Show();
}

}
now is working

thnx very much mika wendelius

datagridviewcomboBox如何在组合框中选择列表的项目

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