Appending to a text file - Tutorial C# Sharp

Lesson 8:

File management

Exercise 8.2:

Appending to a text file

Objetive:

Create a program to ask the user for several sentences (until they just press Enter) and store them in a text file named "sentences.txt". If the file exists, the new content must be appended to its end.

using System;
using System.IO;
class Sentences
{
    static void Main(string[] args)
    {
        StreamWriter myFile = File.AppendText("file.txt");
        string line;

        do
        {
            Console.Write("Enter a sentence: ");
            line = Console.ReadLine();

            if (line != "")
                myFile.WriteLine(line);
        }
        while (line != "");

        myFile.Close();
    }
}