using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Reflection;

using System.Linq.Expressions;

namespace INPEXOne.LearnCS

{

    class RefletLambdaDelegate

    {

        static object[] parameters = new object[] { ,  };

        public delegate int addDelegate(int a, int b);

        public int add(int a ,int b)

        {

            return a + b;

        }

        public static void Main()

        {

            RefletLambdaDelegate rld=new RefletLambdaDelegate();

            //利用反射调用add方法.

            MethodInfo add = typeof(RefletLambdaDelegate).GetMethod("add");

            Console.WriteLine("The add result from using the reflection is : {0}",add.Invoke(rld, parameters));

            //利用Lambda表达式树调用add方法.

            Expression<Func<int, int, int>> extree = (a,b) => rld.add(a, b);

            Func<int, int, int> delinstance = extree.Compile();

            int result = delinstance(int.Parse(parameters[].ToString()), int.Parse(parameters[].ToString()));

            Console.WriteLine("The add result from using the LambdaTree is : {0}",result);

            //利用Lambda表达式调用add方法.

            Func<int, int, int> addLambda = (c, d) => rld.add(c, d);

            int result1 = addLambda(int.Parse(parameters[].ToString()), int.Parse(parameters[].ToString()));

            Console.WriteLine("The add result from using the Lambda without tree is : {0}",result1);

            //利用委托调用add方法.

            addDelegate addDelgateInstance = new addDelegate(rld.add);

            int result2 = addDelgateInstance(int.Parse(parameters[].ToString()), int.Parse(parameters[].ToString()));

            Console.WriteLine("The add result from using the delegate is : {0}", result2);

            //利用匿名方法调用add方法.

            addDelegate AnonymousInstance = delegate(int a, int b) { return rld.add(a,b); };

            int result3 = AnonymousInstance(int.Parse(parameters[].ToString()), int.Parse(parameters[].ToString()));

            Console.WriteLine("The add result from using the anonymous method is : {0}", result3);

            Console.ReadLine();

        }

    }

}