如何使方法在“后台"环境中运行(线程?) [英] How to make a method run in the "background" (threading?)

问题描述

我目前有一些代码可以在文本文件中循环查找特定的短语.但是，运行此方法时，整个应用程序将锁定.我想是因为它在循环，这就是我想要的.

I currently have some code that cycles through a text file looking for a specific phrase. However, when this method runs, the whole application locks up. I assume because it's looping, which is what I want.

我希望这种情况在后台发生，因此仍然可以完成常规方法和用户与应用程序的交互.

I would like this to happen in the background, so normal methods and user interaction with the application can still be done.

如何做到/改善呢?

private void CheckLog()
{   
    while (true)
    {
        // lets get a break
        Thread.Sleep(5000); 

        if (!File.Exists("Command.bat"))
        {
            continue;
        }

        using (StreamReader sr = File.OpenText("Command.bat"))
        {
            string s = "";

            while ((s = sr.ReadLine()) != null)
            {
                if (s.Contains("mp4:production/"))
                {
                    // output it
                    MessageBox.Show(s);
                }
            }
        }
    }
}

推荐答案

使用

class Foo {
    private Thread thread;
    private void CheckLog() {...}
    private void StartObserving() {
        thread = new Thread(this.CheckLog);
        thread.Start();
    }
}

或调色板中的backgroundworker组件.

or the backgroundworker component from the palette.

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