这3个的委托怎么取消，谁帮我写下方法哦！
private void button13_Click(object sender, EventArgs e)
{
button13.Click+=new EventHandler(delegate{MessageBox.Show("1");});

button13.Click+=new EventHandler(delegate{MessageBox.Show("1");});

button13.Click+=new EventHandler(delegate{MessageBox.Show("1");});

}

这3个的委托怎么全部取消，谁帮我写下方法哦！
[解决办法]
http://bbs.csdn.net/topics/390663596?page=1#post-396282834