如何从文本文件中选择随机行并将其显示在文本框中？

问题描述

您好，

我想制作一个测验程序，该程序从包含测验问题的文本文件（QUESTIONS.txt）中随机选择一行。然后，我需要随机选择的行显示在文本文件中。

我单独尝试过这个并且失败了，然后尝试在线搜索但找不到任何有用的东西。



如果有人能给我提供我需要的代码，我会非常感激！

如果您还可以用简单的评论标记代码，只是为了让我知道它是如何工作的我会欣喜若狂!!



提前非常感谢!!

Hello,
I want to make a "quiz" program that randomly selects a line from a text file (QUESTIONS.txt) containing the quiz questions. I then need the randomly selected line to display in a text file.
I have attempted this alone and failed, then tried searching online but couldn't find anything helpful.

If someone could just give me the code that I require, I would be more than grateful!
If you could also label the code with simple comments just to let me know how it works I will be ecstatic!!

Thank you so much in advance!!

推荐答案

//Here is something that may help you get started
//You can produce a shuffled List in 3 lines of code
        Random random = new Random();
        var lines=   File.ReadAllLines(@"C:\temp\test.txt");
        var shuffled= lines.OrderBy(line => random.Next());

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