线程返回值 [英] threading return values

问题描述

如何编写一个简单的方法并返回其结果？

例如，我有一个名为Math的类，一个采用两个整数作为参数并返回一个int结果的方法。如何对此进行编程并将结果用于稍后在应用程序中使用？





线程线程=新线程（（）= > m.SumTest（5））;

thread.Start（）;

How do I thread a simple method and return its results?
For example, I have a class called Math, a single method that takes two ints as params and returns a int result. How do I thread this and get the result to be used later in the application?


Thread thread = new Thread(() => m.SumTest(5));
thread.Start();

public class Maths
    {
        public int num1;
        public int num2;
        Random r = new Random();
        public void Divide()
        {
            for (int i = 0; i < 100000; i++)
            {
                num1 = r.Next(1, 2);
                num2 = r.Next(1, 2);
                int result = num1 / num2;
                Console.WriteLine(result);
                num1 = 0;
                num2 = 0;
            }

        }
        public int SumTest(int max)
        {
            int answer = 0;

            for (int i = 0; i < max; i++)
            {
                answer += i;
            }

            return answer;

        }

    }

推荐答案

您可以在c＃4.0中使用任务穿线。任务在内部处理线程，因此它比处理线程更安全。



关于如何使用任务处理程序的示例是：

You can use Task in c# 4.0 for threading. Task take care of threading internally so it is safer than dealing with threads.

Example on how to work on your program using Task is:

Task<int> t1 = Task<int>.Factory.StartNew(() => m.SumTest(5));
Task t2 = Task.Factory.StartNew(() => m.Divide());
Task.WaitAll(t1, t2);  //this will wait till t1 and t2 get finished.
var sumResult = t1.Result; //get the result of SumTest method like this.

您可以使用 AsyncCallback [ ^ ]，其中有一个很好的例子如何使用它。

You can use AsyncCallback[^], which has a good example on how to use it.

当你调用线程并开始加入它时



你使用回调方法和操作系统自动返回它



如果你设置了线程的响应时间。

when you call thread and start and join it

you use a call back method and operating system automatically return it

if you have set response time for threads.

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