并行执行，没用到过，写到这里免得搞忘

 /// <summary>/// /// </summary>class Program{static void Main(string[] args){simultaneous();Console.ReadKey();}static void simultaneous(){//尽可能并行执行提供的每个操作
            Parallel.Invoke(() => ComplexMethod("1"),() => ComplexMethod("2"),() => ComplexMethod("3"));}static void ComplexMethod(string a){Console.WriteLine(a);}}