C＃：是否可以在菜单项中获取DropDownItem的索引？

Question

是否可以在下拉菜单中获取项目的索引？

Answer 1

private void item_Click(object sender, EventArgs e)
{
    ToolStripMenuItem item = sender as ToolStripMenuItem;
    if (item != null)
    {
        int index = (item.OwnerItem as ToolStripMenuItem).DropDownItems.IndexOf(item);
    }
}

Answer 2

上面的解决方案在转换为ToolStripMenuItem时可能会抛出一个null，并且会出现一些问题。这个更干净：

private void item_Click(object sender, EventArgs e)
{
    ToolStripMenuItem item = sender as ToolStripMenuItem;
    if (item != null)
    {
        int index = ContextMenuStrip.Items.IndexOf(commentMenuItem);
    }
}