Use of StreamRead and StreamWriter (example explanation)

//StreamRead to read a file   using (StreamReader sr = new StreamReader(@"C:\Users\enle\Desktop\New text document.txt", ))
   {
    while (!)//Loop to read the file    {
     (());
    }
   }
   ();

//StreamWriter writes a text file      using (StreamWriter strw = new StreamWriter(@"C:\Users\wbrm\Desktop\New.txt",true ))//true means additional      {
        //("Don't choose comfort at the age of hardship");        ("Look at me, I have something to cover you");
      }
      ("Writing successfully");
      ();