基础问题

[wangbo1204]

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

namespace abc
{
enum WeekDay
{
Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
}
class Program
{
static void Main(string[] args)
{
WeekDay day =(WeekDay)3;

Console.WriteLine(day);
Console.ReadLine();
}
}
}
这个程序中：

结果为什么会是Wednesday而不是3呢
我主要是枚举转换不太懂
谢谢

[scucj]

Console.WriteLine(day)
"Wednesday"
Console.WriteLine(day.ToString())
"Wednesday"
Console.WriteLine(day.ToString("D"))
"3"
使用不同的输出格式,结果不同!