今天早上的時候，要寫一個多引數的執行緒，找到一種，用新建一個物件的方法來引數，其實傳入的也是單個引數，只不過傳入的是一個物件，只不過物件裡有很多屬性罷了。後來在stackoverflow上看到這麼個答案，覺得很贊。所以寫下來，以備不時之需。

public Thread StartTheThread(SomeType param1, SomeOtherType param2) {
  var t = new Thread(() => RealStart(param1, param2));
  t.Start();
  return t;
}

private static void RealStart(SomeType param1, SomeOtherType param2) {
  ...
}
 

要理解上面的程式碼，首先看要看Thread()這個類的解構函式：

   
        public Thread(ParameterizedThreadStart start); 
        public Thread(ThreadStart start);      
        public Thread(ParameterizedThreadStart start, int maxStackSize);   
        public Thread(ThreadStart start, int maxStackSize);

 TestDelegate testDelA = new TestDelegate(M);

// C# 2.0: A delegate can be initialized with
// inline code, called an "anonymous method." This
// method takes a string as an input parameter.
TestDelegate testDelB = delegate(string s) { Console.WriteLine(s); };

// C# 3.0. A delegate can be initialized with
// a lambda expression. The lambda also takes a string
// as an input parameter (x). The type of x is inferred by the compiler.
TestDelegate testDelC = (x) => { Console.WriteLine(x); };

// Invoke the delegates.
testDelA("Hello. My name is M and I write lines.");
testDelB("That's nothing. I'm anonymous and ");
testDelC("I'm a famous author.");
 

       寫到這，大致就明白了，其實就是用了一個匿名函式()=>RealStart(param1 ,param2)替代了delegate ParameterizedThreadStart(object obj)。