莱姆达表示式和莱姆达表达式树

  TestDelegateA testDelA = x => { Console.WriteLine(x); };
            TestDelegateB testDelB = (x, y) => { Console.WriteLine(x + y.ToString()); };
            testDelA("hello word");
            testDelB("hello", 123);

List<string> strList=new List<string>();           

  strList.Add("hello test1");           

  strList.Add("hello test2");            

strList.Add("hello test3");                     

   Action<string> OutPut = str=>Console.WriteLine(str);

            //OutPut outPut = Say;

            strList.ForEach(OutPut);             //list<>这些用委托的貌似只能用action的委托别的不行             //OU = Say1;             //strList1.ForEach(OU);             Console.WriteLine("这是莱姆达表达树----------------------");

            Expression<Func<int, int, int>> expression = (x, y) => x + y;            

Func<int, int, int> adddFunc = expression.Compile();       

      Console.WriteLine(adddFunc(10,20));

 

详细可参考：http://www.cnblogs.com/kingmoon/archive/2011/05/03/2035696.html

莱姆达表达式树：http://blog.jobbole.com/84588/