17委托异步调用方法

   1:      //炒菜

   2:      public class Cooking

   3:      {

   4:          public string Cook(string food1, string food2)

   5:          {

   6:              Thread.CurrentThread.Name = "王大厨";

   7:              Console.WriteLine("厨师开始炒菜");

   8:   

   9:              for (int i = 1; i <= 2; i++)

  10:              {

  11:                  Thread.Sleep(TimeSpan.FromSeconds(i));

  12:                  Console.WriteLine("{0}:在炒菜(时间:{1}秒)",Thread.CurrentThread.Name,i);

  13:              }

  14:              Console.WriteLine("好了，菜做完了");

  15:              return food1 + food2;

  16:          }

  17:      }

   1:      class Program

   2:      {

   3:          static void Main(string[] args)

   4:          {

   5:              Console.WriteLine("客人点菜了！");

   6:   

   7:              Cooking cooking = new Cooking();

   8:              string result = cooking.Cook("鱼香", "肉丝");

   9:              Console.WriteLine("{0}好了，请慢用。", result);

  10:   

  11:              Console.WriteLine("客人吃饭");

  12:              Console.ReadKey();

  13:          }

  14:      }

   1:  using System.Threading;

   2:  using System.Threading.Tasks;

   3:   

   4:  namespace ConsoleApplication17

   5:  {

   6:      class Program

   7:      {

   8:          static void Main(string[] args)

   9:          {

  10:              Console.WriteLine("客人点菜了！");

  11:   

  12:              Cooking cooking = new Cooking();

  13:              CookDelegate del = new CookDelegate(cooking.Cook); //给委托注册方法

  14:              IAsyncResult asyncResult = del.BeginInvoke("西红柿", "鸡蛋", null, null);

  15:              Console.WriteLine("客人做点其它事......");

  16:              string result = del.EndInvoke(asyncResult);

  17:              Console.WriteLine("{0}好了，请慢用。", result);

  18:              Console.ReadKey();

  19:          }

  20:      }

  21:   

  22:      public delegate string CookDelegate(string food1, string food2);

  23:   

  24:      //炒菜

  25:      public class Cooking

  26:      {

  27:          public string Cook(string food1, string food2)

  28:          {

  29:              Thread.CurrentThread.Name = "王大厨";

  30:              Console.WriteLine("厨师开始炒菜");

  31:   

  32:              for (int i = 1; i <= 2; i++)

  33:              {

  34:                  Thread.Sleep(TimeSpan.FromSeconds(i));

  35:                  Console.WriteLine("{0}:在炒菜(时间:{1}秒)",Thread.CurrentThread.Name,i);

  36:              }

  37:              Console.WriteLine("好了，菜做完了");

  38:              return food1 + food2;

  39:          }

  40:      }

  41:  }

  42:   

   1:  using System.Runtime.Remoting.Messaging;

   2:  using System.Text;

   3:  using System.Threading;

   4:  using System.Threading.Tasks;

   5:   

   6:  namespace ConsoleApplication17

   7:  {

   8:      class Program

   9:      {

  10:          static void Main(string[] args)

  11:          {

  12:              Console.WriteLine("客人点菜了！");

  13:   

  14:              Cooking cooking = new Cooking();

  15:              CookDelegate del = new CookDelegate(cooking.Cook); //给委托注册方法

  16:   

  17:              string data = "希望您能喜欢";

  18:              AsyncCallback callBack = new AsyncCallback(OnCookComplete);

  19:              IAsyncResult asyncResult = del.BeginInvoke("西红柿", "鸡蛋", callBack, data);

  20:              Console.WriteLine("客人做点其它事......");

  21:   

  22:              Console.ReadKey();

  23:          }

  24:   

  25:          //回调需要执行的方法

  26:          static void OnCookComplete(IAsyncResult asyncResult)

  27:          {

  28:              AsyncResult result = (AsyncResult) asyncResult;

  29:   

  30:              //从异步结果中可以拿到委托

  31:              CookDelegate del = (CookDelegate)result.AsyncDelegate;

  32:   

  33:              //从异步结果中可以拿到BeginInvoke方法中的object参数

  34:              string data = (string) asyncResult.AsyncState;

  35:   

  36:              string r = del.EndInvoke(asyncResult);

  37:              Console.WriteLine("{0}好了，请慢用,{1}", r,data);

  38:          }

  39:      }

  40:   

  41:      public delegate string CookDelegate(string food1, string food2);

  42:   

  43:      //炒菜

  44:      public class Cooking

  45:      {

  46:          public string Cook(string food1, string food2)

  47:          {

  48:              Thread.CurrentThread.Name = "王大厨";

  49:              Console.WriteLine("厨师开始炒菜");

  50:   

  51:              for (int i = 1; i <= 2; i++)

  52:              {

  53:                  Thread.Sleep(TimeSpan.FromSeconds(i));

  54:                  Console.WriteLine("{0}:在炒菜(时间:{1}秒)",Thread.CurrentThread.Name,i);

  55:              }

  56:              Console.WriteLine("好了，菜做完了");

  57:              return food1 + food2;

  58:          }

  59:      }

  60:  }

  61: