刚学C#，在编写如下程序的时候发生错误：“ConsoleApplication5.ImyInterface.ShowInfo()”: 接口成员不能有定义，渴望各

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication5
{
    interface ImyInterface
    {
        string ID
        {
            get;
            set;
        }
        string Name
        {
            get;
            set;
        }
        void ShowInfo()
        {
            Console.WriteLine("编号\t 姓名");
            Console.WriteLine(ID + "\t" + Name);
        }
    }
    class Program:ImyInterface
    {
        string id = "";
        string name = "";
        public string ID
        {
            get
            {
                return id;
            }
            set
            {
                id = value;
            }
        }
        public string Name
        {
            get
            {
                return id;
            }
            set
            {
                id = value;
            }
        }
        public void ShowInfo()
        {
            Console.WriteLine("编号\t 姓名");
            Console.WriteLine(ID + "\t" + Name);
        }
        static void Main(string[] args)
        {
            Program program = new Program();
            ImyInterface imyinterface = program;
            imyinterface.ID = "TM";
            imyinterface.Name = "Fuck!";
            imyinterface.ShowInfo();
        }
    }
}