如何获取菜单中所绑定事件处理程序
ToolStripItem item = sender as ToolStripItem;
PropertyInfo propertyInfo = (typeof (ToolStripItem)).GetProperty("Events", BindingFlags.Instance | BindingFlags.NonPublic);
EventHandlerList eventHandlerList = (EventHandlerList) propertyInfo.GetValue(item, null);
FieldInfo fieldInfo = (typeof(ToolStripItem)).GetField ("EventClick", BindingFlags.Static | BindingFlags.NonPublic);
Delegate d = eventHandlerList[fieldInfo.GetValue(null)];
if (d != null)
{
foreach (Delegate temp in d.GetInvocationList())
{
//这里已经取得了所有Click事件绑定的处理程序，可以做一些事情。例如下面 的代码是撤销所有的事件注册
item.Click -= temp as EventHandler;
}
}
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