c# - 简单的多线程 - 将语句合并为两行

Question

如果我有:

ThreadStart starter = delegate { MessageBox.Show("Test"); };
new Thread(starter).Start();

如何将其组合成一行代码？我试过:

new Thread(delegate { MessageBox.Show("Test"); }).Start();

但是我得到这个错误:

The call is ambiguous between the following methods or properties: 'System.Threading.Thread.Thread(System.Threading.ThreadStart)' and 'System.Threading.Thread.Thread(System.Threading.ParameterizedThreadStart)'

Answer 1

new Thread(() => MessageBox.Show("Test")).Start();

或

new Thread((ThreadStart)delegate { MessageBox.Show("Test"); }).Start();

或

new Thread(delegate() { MessageBox.Show("Test"); }).Start();

问题是当你声明一个委托(delegate)时没有指定它有多少参数，编译器不知道你是指 ThreadStart(0 parameters) 还是 ParameterizedThreadStart(1 parameter)。