User u = new User();
            var method = u.GetType().GetMethod("Methods");

            var type1 = method.GetParameters()[0].ParameterType;
            var parameter1 = Expression.Parameter(type1, "pr1");

            var type2 = method.GetParameters()[1].ParameterType;
            var parameter2 = Expression.Parameter(type2, "pr2");

            var callExpression = Expression.Call(Expression.Constant(u), method, new Expression[] { parameter1, parameter2 });

            Expression<Action<string, int>> scall = Expression.Lambda<Action<string, int>>(callExpression, new ParameterExpression[] { parameter1, parameter2 });
            var executeMethods = scall.Compile();
            executeMethods("1", 1);

            u.Methods("ddd", 3);

public class User
    {
        public void Methods(string name,int age)
        {
            Console.WriteLine(name+"-----"+age+s);
        }
    }

这几天学习看了资料利用表达式树反射？

感觉这样写好麻烦啊?有帮忙优化一下的或者改进的吗？

ITPub博客

表达式树反射

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