C# 修改文本文件中特定行的内容
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Modify the content of specific line in text file
提问by user2148116
I'm new on c# and currently working on project so that I need to open an existing text file and editing the content of a specific line (i.e. 32) but I failed! Any help?
我是 c# 新手，目前正在处理项目，因此我需要打开一个现有的文本文件并编辑特定行（即 32）的内容，但我失败了！有什么帮助吗？
回答by Mike Perrenoud
Well, based on your question you know the line number, so do something like this:
好吧，根据您的问题，您知道行号，因此请执行以下操作：
var lines = File.ReadAllLines("path to file");
lines[31] = "some value";
File.WriteAllLines("path to file", lines);
the first line of code gets you all the lines of a file into an array. The second line clearly sets thy known line to some value, and the third line overwrites the file with the new set of lines.
第一行代码将文件的所有行放入一个数组中。第二行清楚地将你的已知行设置为某个值，第三行用新的行集覆盖文件。
