Question

I’d like to write to a text file, skipping the first line, but otherwise writing over everything else. I have an array that I’m reading from the file into, and using it to store and manipulate data if the data in the text file needs to be corrected, then I want to immediately write back the data. the original text file has two columns, tab delimited, plus a single line at top that I want to keep.

Thanks,

Amanda

Answer 1

You could try this:

var content = System.IO.File
    .ReadLines(file_path)
    .Skip(1)
    .ToArray();

You now have an array with only the content – not the header line. So modify this to your heart’s content.

Then, to preserve the header line, do this to write it back:

System.IO.File.WriteAllLines(
    file_path,
    System.IO.File
        .ReadLines(file_path)
        .Take(1)
        .Concat(content));

Does that work for you?