如何阅读和编辑在C＃中的.txt文件？ [英] How do I read and edit a .txt file in C#?

问题描述

例如，我有一个txt文件，上面写着：

For example, I have a txt file that reads:

12 345 45
2342 234 45 2 2 45345
234 546 34 3 45 65 765
12 23 434 34 56 76 5

欲插入所有的数字之间逗号，左括号添加到每一行的开头和右括号到每一行的末尾。因此，编辑后应改为：

I want to insert a comma between all the numbers, add a left brace to the begining of each line and a right brace to the end of each line. So after the editing it should read:

{12, 345, 45}
{2342, 234, 45, 2, 2, 45345}
{234, 546, 34, 3, 45, 65, 765}
{12, 23, 434, 34, 56, 76, 5}

我该怎么办呢？

推荐答案

我pretty多琢磨出来的时候所有给我你的答案，但非常感谢反正:)。我想出了这一点：

I pretty much figured it out while you were all giving me your answers, but thanks a lot anyway :). I came up with this:

TextReader reader = new StreamReader("triangle.txt");
TextWriter writer = new StreamWriter("triangle2.txt");
for (; ; )
{
    string s = reader.ReadLine();
    if (s == null)
       break;
    s = s.Replace(" ", ", ");
    s = "{" + s + "},";
    writer.WriteLine(s);
}

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