如何在上下文菜单条上的子项上添加事件？ C#

Question

for (int i = 0; i < client.Folders.Count; i++)
        {

            (ContextMenuListView.Items[1] as ToolStripMenuItem).DropDownItems.Add(client.Folders[i].Name);//add Folder to Move To
            (ContextMenuListView.Items[2] as ToolStripMenuItem).DropDownItems.Add(client.Folders[i].Name);                
        }

如何获取 Items[1] 或 Items[2] 中的子项目？

Answer 1

ToolStripItemCollection.Add(string) (DropDownItems.Add()) 将返回新的 ToolStripItem ...

另一方面，所有其他子项均由 ToolStripItemCollection DropDownItems 引用

因此，获取两个创建的项目的简单方法是：

(ContextMenuListView.Items[1] as ToolStripMenuItem).DropDownItems.Add(client.Folders[i].Name);
(ContextMenuListView.Items[2] as ToolStripMenuItem).DropDownItems.Add(client.Folders[i].Name);

将成为：

ToolStripItem firstItem = (ContextMenuListView.Items[1] as ToolStripMenuItem).DropDownItems.Add(client.Folders[i].Name);
ToolStripItem secondItem = (ContextMenuListView.Items[2] as ToolStripMenuItem).DropDownItems.Add(client.Folders[i].Name);

或访问所有子项目：

foreach(ToolStripItem i in (ContextMenuListView.Items[1] as ToolStripMenuItem).DropDownItems.OfType<ToolStripItem>())
{
   //...
}

或访问特定子项目：

var specificItem = (ContextMenuListView.Items[1] as ToolStripMenuItem).DropDownItems.Item[0];