Question

Like the tittle says, I would like to add a new string on the bottom of the file, but somehow, its not working.
Hope someone can help me out x___x

      private string add(string asd){
        {string filename = "asd.txt";
        StreamReader reader = new StreamReader(filename);
        StreamWriter write = new StreamWriter(filename);
        string input = null;
        while ((input = reader.ReadLine()) != null)
        {
            write.WriteLine(input);
        }
        reader.Close();
        write.WriteLine(asd);
        write.Close();}

Answer 1

Use File.AppendAllText.

Opens a file, appends the specified string to the file, and then closes the file. If the file does not exist, this method creates a file, writes the specified string to the file, then closes the file.

Example:

private string Add(string asd) {
    string filename = "asd.txt";
    File.AppendAllText(filename, asd);
}