How to append a new line to a file

Question

I'm trying to create a code that asks for a user name and saves it in a text file. The problem is when I close the console app and try to run it again, it deletes all the information that was in the text file. Can anyone help me solve this problem?

public static void UserWriter(StreamWriter WriteNewLine)
{
    bool EndOfWrite = true;
    char Answer;
    while (EndOfWrite)
    {
        Console.WriteLine("eneter a user name");
        WriteNewLine.WriteLine(Console.ReadLine());
        Console.WriteLine("did you finish ? Y/N");
        Wrong: Answer = Convert.ToChar(Console.ReadLine());
        switch (Answer)
        {
            case 'Y':
                EndOfWrite = false;
                break;
            case 'N':
                break;
            default:
                goto Wrong;
         }
     }
     WriteNewLine.Close();
}

static void Main(string[] args)
{
    string fileLoction = @"C:\project\user.txt";
    StreamWriter WriteNewLine = new StreamWriter(fileLoction);
    if (File.Exists(fileLoction))
    {
        WriteNewLine.Close();
        WriteNewLine = File.AppendText(fileLoction);
        UserWriter(WriteNewLine);
        WriteNewLine.Close();
    }
    else
    {
        UserWriter(WriteNewLine);
        WriteNewLine.Close();
    }
}

score -1 · Accepted Answer · answered Aug 28 '19 at 02:55

Along with @metal answer, this shall do the job.

static void Main(string[] args)
{
    string fileLoction = @"C:\project\user.txt";
    StreamWriter WriteNewLine = new StreamWriter(fileLoction, true);
    WriteNewLine = File.AppendText(fileLoction);
    WriteNewLine.Close();
}

How to append a new line to a file

1 Answers1