修改文本文件中特定行的内容

Question

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 (ie 32) but I failed! Any help?

Answer 1

Well, based on your question you know the line number, so do something like this:

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.