c#多线程如何从线程返回值

public delegate void ResultCallback(int i);

public class A //被调用函数所在的类

{

public A(ResultCallback callback)

{

this._result = callback;

}

private ResultCallback _result;

private int i = 0;

public void calledMethod()

{

i++;

if (this._result != null)

{

this._result(i);

}

}

}

public class B //主线程

{

public void hello(int i)

{

Console.WriteLine(i.ToString());

}

public void testMethod() //运行的函数，启动多线程

{

ResultCallback callback = new ResultCallback(hello);

A temp = new A(callback);

Thread t = new Thread(new ThreadStart(temp.calledMethod));

t.Start();

t.Join();

}

}