using System; using System.Threading; using System.Threading.Tasks; namespace ConsoleApplication18 {     class Program     {         static void Main(string[] args)         {             Func<string, string> _processTimeFunc = new Func<string, string>((string arg) =>            {                return string.Format("{0} {1}", arg, DateTime.Now);            });             Task.Factory.FromAsync<string, string>(_processTimeFunc.BeginInvoke, _processTimeFunc.EndInvoke, "Zhuzhou", null)                 .ContinueWith((result) =>                 {                     Console.WriteLine(result.Result);                 });             Console.ReadLine();         }     } }