怎么将控制台的打印输出到文本文件中

Console.WriteLine("Hello World");
  FileStream fs1 = new FileStream("Test.txt", FileMode.Create);
  // First, save the standard output.
  TextWriter tmp = Console.Out;
  StreamWriter sw1 = new StreamWriter(fs1);
  Console.SetOut(sw1);
  Console.WriteLine("Hello file");
  Console.SetOut(tmp);
  Console.WriteLine("Hello World");
    sw1.Close();