解析如何使用反射调用类型成员 方法,字段,属性

如下所示：

    class program
    {
        static void main(string[] args)
        {
            type t = typeof(test);
            object result;
            test tc =new test();
            console.writeline("invoke a static method");
            t.invokemember("sayhello",bindingflags.invokemethod | bindingflags.static | bindingflags.public, null, null, new object[] { });
            console.writeline("------------------------");
            console.writeline("invoke a generic method");
            list<string> list = new list<string>();
            list.add("guohu");
            list.add("leihu");
            //we should assign the parameter type to generic method by using makegenericmethod
            methodinfo mi = t.getmethod("print").makegenericmethod(typeof(string));
            mi.invoke(null, new object[] { list });
            console.writeline("------------------------");
            console.writeline("invoke a instance method");
            methodinfo m = t.getmethod("swap");
            object[] obj = new object[2];
            obj[0] = 123;
            obj[1] = 230;
            m.invoke(new test(), obj);
            console.writeline("{0},{1}", obj[0], obj[1]);
            console.writeline("------------------------");
            console.writeline("output field name");
            fieldinfo[] fi = t.getfields();
            foreach (fieldinfo name in fi)
            {
                console.writeline("{0}",name);
            }
            console.writeline("------------------------");
            console.writeline("invoke a method with named parameters");
            object[] argvalues = new object[] { "guo", "hu" };
            string[] argnames = new string[] { "lastname", "firstname" };
            t.invokemember("printname", bindingflags.invokemethod, null, null, argvalues, null, null, argnames);
            console.writeline("------------------------");
            console.writeline("get a field value");
            result = t.invokemember("name", bindingflags.getfield | bindingflags.getproperty, null, tc, new object[] { });
            console.writeline("name == {0}", result);
            console.writeline("------------------------");
            console.writeline("set a field value");
            t.invokemember("name", bindingflags.setfield, null, tc, new object[] { "new value" });
            result = t.invokemember("name", bindingflags.getfield | bindingflags.getproperty, null, tc, new object[] { });
            console.writeline("name == {0}",result);
        }
    }
    class test
    {
        public string name;
        public test()
        {
            name = "initilize name";
        }
        public static void sayhello()
        {
            console.writeline("sayhello");
        }
        public static void print<t>(ienumerable<t> item)
        {
            foreach (t t in item)
            {
                console.writeline("{0}", t);
            }
        }
        public static void printname(string firstname, string lastname)
        {
            console.writeline("{0},{1}", lastname, firstname);
        }
        public void swap(ref int a, ref int b)
        {
            int x = a;
            a = b;
            b = x;
        }
    }