asp.net+mysql数据库备份问题

public void StartCmd(string workingDirectory, string command)
  {
  Process p = new Process();
  p.StartInfo.FileName = @"D:\备份\epet.sql";
  p.StartInfo.WorkingDirectory = workingDirectory;

  p.StartInfo.UseShellExecute = false;
  p.StartInfo.RedirectStandardInput = true;
  p.StartInfo.RedirectStandardOutput = true;
  p.StartInfo.RedirectStandardError = true;
  p.StartInfo.CreateNoWindow = true;
  p.Start();
  p.StandardInput.WriteLine(command);
  p.StandardInput.WriteLine("exit");
  p.Close();
  }



  string asa = "-hlocalhost -uroot -pmysql epet > " + string.Format("{0}", @"D:\备份\epet.sql");

  StartCmd(@"C:\Program Files\MySQL\MySQL Server 5.0\bin\mysql.exe",asa);