Removing the first line of a text file in C#

Question

I can currently remove the last line of a text file using:

    var lines = System.IO.File.ReadAllLines(\"test.txt\");
    System.IO.File.WriteAllLines(\"test         


        

Answer 1

Here is an alternative:

        using (var stream = File.OpenRead("C:\\yourfile"))
        {
            var items = new LinkedList();
            using (var reader = new StreamReader(stream))
            {
                reader.ReadLine(); // skip one line
                string line;
                while ((line = reader.ReadLine()) != null)
                {
                    //it's far better to do the actual processing here
                    items.AddLast(line);
                }
            }
        }

Update

If you need an IEnumerable and don't want to waste memory you could do something like this:

    public static IEnumerable GetFileLines(string filename)
    {
        using (var stream = File.OpenRead(filename))
        {
            using (var reader = new StreamReader(stream))
            {
                reader.ReadLine(); // skip one line
                string line;
                while ((line = reader.ReadLine()) != null)
                {
                    yield return line;
                }
            }
        }
    }


    static void Main(string[] args)
    {
        foreach (var line in GetFileLines("C:\\yourfile.txt"))
        {
            // do something with the line here.
        }
    }