C#: While copy partial content, new line still persist

Question

test.txt content,

Now I am trying to copy partial content of file (example, only 2nd line Hello1) and using below. fileStream.Seek

{
         Get().Wait();
    }


    private static HttpClient Client { get; } = new HttpClient();
    public static  async Task<HttpResponseMessage> Get()
    {
        using (var fileStream = new FileStream(@"C:\Files\test.txt", FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
        {

            fileStream.Seek(5, SeekOrigin.Current);

            var result = new HttpResponseMessage(HttpStatusCode.OK)
            {
                Content = new StreamContent(fileStream),
            };

            using (FileStream fs = new FileStream(@"C:\Files\test_Copy.txt", FileMode.CreateNew, FileAccess.Write))
            {

                var X = result.Content;

                await result.Content.CopyToAsync(fs);
            }

            return result;
        }

    }

The above code copy only partial content (Hello1), but I am also seeing a line above it.

I would like the copy file (text_copy.txt) should start with line 1. How to do it? Thanks!

score 3 · Accepted Answer · answered Jan 18 '18 at 09:53

3

I think this is due to how windows treats new lines. crlf. If you start at 6, I believe you won't see new line.

answered Jan 18 '18 at 09:53

CodeNinja

94
1
6

Yes, I started at 7 and no new line, Thanks! – user584018 Jan 18 '18 at 09:56

score 0 · Answer 2 · answered Jan 18 '18 at 09:58

There are more than 5 characters in the first line. Apart from the letter of "Hello", there is also the line break character (or even two for windows files). If you want to read the file line by line, it would probably be easier to use File.ReadLines (see also here).

C#: While copy partial content, new line still persist

2 Answers2