为什么我在异步方法中的 while 循环没有停止? [英] Why doesn't my while loop in an async method stop?

问题描述

我的应用程序的 async 方法中有以下代码

I've got the following code in an async method in my app

b_saving = true;

while (b_saving == true)
{
     try
     {
          if (1 == 1)
                b_saving = false;

          // anything down here should not execute?               
          i_should_not_run();

     }
     catch{
     }
     finally{
     }
}

我对这段代码的期望是，一旦 b_saving 设置为 false，它就会停止.然而，当我运行它时，情况并非如此.断点显示即使 b_saving 为假，该方法仍会继续运行.

My expectation with this code is that it will stop as soon as b_saving is set to false. Yet when I run it, this is not the case. Breakpoints show the method continues on even when b_saving is false.

while 循环在 C# 中不能这样工作吗?

Do while loops not work this way in C#?

推荐答案

即使您将 b_saving 设置为 false，循环仍将继续，除非您输入 break 命令在那里，while 循环将继续执行直到其块结束，然后才重新评估条件，在这种情况下很可能避免循环的另一次迭代，除非您将 b_saving 设置回 true在您的 i_should_not_run 方法中.

the loop will continue even after you set the b_saving to false, unless you put a break command in there, the while loop will continue executing until the end of its block and only then re-evaluate the condition and in this case most likely avoid another iteration of the loop, unless you set back b_saving to true inside your i_should_not_run method.

PS你可以在while里写一个更简单的条件，不用放==...

PS you can write a simpler condition in the while, no need to put the ==...

  while (b_saving)

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