GetType()与Typeof()的区别 举了2个案例

GetType()与Typeof()区别

GetType(）返回的是对象的类名
案例1：

int i = 5;Console.WriteLine(i.GetType());//System.Int32var x = 127.25m;Console.WriteLine(x.GetType());//System.Decimal

案例2：

namespace _2011._12._15{    class Program    {        static void Main(string[] args)        {            Test testone = new Test();            string s = testone.GetType().ToString();            Console.WriteLine(s);//_2011._12._15.Test  命名空间的Test类        }    }    class Test    {         }}

Typeof()返回的是类名的对象，也可以返回类名，也可以返回特定类内部的方法和字段

namespace _2011._12._15{    class Program    {        static void Main(string[] args)        {            Test testone = new Test();            string s = testone.GetType().ToString();            Console.WriteLine("GetType():");            Console.WriteLine(s);//_2011._12._15.Test  命名空间的Test类

            Type type = typeof(Test);            Console.WriteLine("Typeof():");            Console.WriteLine(type);//_2011._12._15.Test  命名空间的Test类            Console.WriteLine();

           MethodInfo[] methodinfo = type.GetMethods();

           Console.WriteLine(methodinfo.GetType());//System.Reflection.MethodInfo[]            foreach (var i in methodinfo)            {                Console.WriteLine(i);//输出Test类的所有方法及继承Object的实例方法            }            Console.WriteLine();            Console.WriteLine();            Console.WriteLine();            Console.WriteLine();            MemberInfo[] memberinfo = type.GetMembers();            Console.WriteLine(memberinfo.GetType());            foreach(var i in memberinfo)            {                Console.WriteLine(i);//输出Test类字段和System.type类型            }        }

    }

    class Test    {

        private int age;        public string name;        public void speaking()        {            Console.WriteLine("Welcome to cnblog!");        }

        public void writing()        {            Console.WriteLine("Please writing something!");        }    }}

运行结果：

GetType():_2011._12._15.TestTypeof():_2011._12._15.Test

System.Reflection.MethodInfo[]Void speaking()Void writing()System.Type GetType()System.String ToString()Boolean Equals(System.Object)Int32 GetHashCode()

System.Reflection.MemberInfo[]Void speaking()Void writing()System.Type GetType()System.String ToString()Boolean Equals(System.Object)Int32 GetHashCode()Void .ctor()System.String name