返回从线程价值？ [英] Returning a value from thread?

问题描述

我如何从一个线程返回一个值？

How do I return a value from a thread?

推荐答案

一，以获得从一个线程返回值的最简单的方法是使用闭包。创建将举行从线程的返回值，然后捕获它的lambda EX pression的变量。从辅助线程分配回报值这个变量，然后一旦线头可以从父线程使用它。

One of the easiest ways to get a return value from a thread is to use closures. Create a variable that will hold the return value from the thread and then capture it in a lambda expression. Assign the "return" value to this variable from the worker thread and then once that thread ends you can use it from the parent thread.

void Main()
{
  object value = null; // Used to store the return value
  var thread = new Thread(
    () =>
    {
      value = "Hello World"; // Publish the return value
    });
  thread.Start();
  thread.Join();
  Console.WriteLine(value); // Use the return value here
}

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