Question

I am currently working on a project where i must remove a specfic line of text from a text file.

This is the code i have already:

static void Main( string[] args )
    {
        string line = null;
        string line_to_delete = "--";
        string desktopLocation = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
        string text = Path.Combine( desktopLocation, "tim3.txt" );
        string file = Path.Combine( desktopLocation, "tim4.txt" );

        using (StreamReader reader = new StreamReader( text))
        {
            using (StreamWriter writer = new StreamWriter(file ))
            {
                while((line = reader.ReadLine()) != null)
                {
                    if (string.Compare( line, line_to_delete ) == 0)
                        continue;
                    writer.WriteLine( line );
                }
            }

This writes only the text to a new txt file but doesnt delete anything.

Thanks.
The main problem is that i just need to delete a specific line of text in the txt file.

Answer 1

I suspect leading/training spaces, which are causing String.comapre to return unexpected result

Instead of

 if (string.Compare( line, line_to_delete ) == 0)

try

if(String.IsNullOrEmpty(line) || String.Equals(line.Trim(), line_to_delete))

As above is not working can you try following (LINQ)

EDIT – to replace only text

File.WriteAllText(file, File.ReadAllText(text).Replace(line_to_delete,"")) 

If above works, it will replace all using block in your code

If above does not work, i suspect it is data issue (“__” not present in text file)