public static void Main()
{
//用枚举类型Weekday声明变量并赋初值
Weekday wd1 = Weekday.Mon;
Console.WriteLine("每周的工作日从{0}开始", wd1);
Weekday wd2 = Weekday.Fri;
Console.WriteLine("到{0}结束", wd2);
//枚举类型变量用于计算
Console.WriteLine("每周有{0}个工作日", wd2 - wd1 + 1);
Console.WriteLine();
//枚举类型变量作为函数的参数
Console.WriteLine("Mon之后是{0}", NextDay(Weekday.Mon));
Console.WriteLine();
//使用枚举类型的GetNames()方法
foreach (string s1 in Weekday.GetNames(typeof(Weekday)))
{
Console.Write(s1 + " ");
}
Console.WriteLine();
//从命令行读取枚举类型变量的值
Console.Write("今天是星期几？");
Weekday wd3 = (Weekday)Weekday.Parse(typeof(Weekday), Console.ReadLine());
Console.WriteLine("明天是{0}", NextDay(wd3));
//比较枚举类型的值
Console.Write("体育课在星期几？");
wd1 = (Weekday)Weekday.Parse(typeof(Weekday), Console.ReadLine());
Console.Write("物理实验在星期几？");
wd2 = (Weekday)Weekday.Parse(typeof(Weekday), Console.ReadLine());
if (wd2.CompareTo(wd1) == 0)
{
Console.WriteLine("糟糕，在同一天");
}
else
{
Console.WriteLine("没事，不在同一天");
}
Console.ReadLine();
}
public static void Main()
{
// 用枚举类型Weekday声明变量并赋初值
Weekday wd1 = Weekday.Mon;
Console.WriteLine("每周的工作日从{0}开始", wd1);
Weekday wd2 = Weekday.Fri;
Console.WriteLine("到{0}结束", wd2);
// 枚举类型变量用于计算
Console.WriteLine("每周有{0}个工作日", wd2 - wd1 + 1);
Console.WriteLine();
// 枚举类型变量作为函数的参数
Console.WriteLine("Mon之后是{0}", NextDay(Weekday.Mon));
Console.WriteLine();
// 使用枚举类型的GetNames()方法
foreach (string s1 in Weekday.GetNames(typeof(Weekday))) //Enum.GetName(Type enumtype)检索枚举中常数名称的数组
{
Console.Write(s1 + " ");
}
Console.WriteLine("\n");
// 从命令行读取枚举类型变量的值
Console.Write("今天是星期几? ");
Weekday wd3 = (Weekday)Weekday.Parse(typeof(Weekday), Console.ReadLine()); //Enum.Parse(Type enumtype,string value)将字符串转换成等效的枚举对象
Console.WriteLine("明天是{0}", NextDay(wd3));
Console.WriteLine();
// 比较枚举类型的值
Console.Write("体育课在星期几? ");
wd1 = (Weekday)Weekday.Parse(typeof(Weekday), Console.ReadLine());
Console.Write("物理试验在星期几? ");
wd2 = (Weekday)Weekday.Parse(typeof(Weekday), Console.ReadLine());
if (wd1.CompareTo(wd2) == 0) //Enum.CompareTo(Enum target) 比较对象
{
Console.WriteLine("糟糕，在同一天。");
}
else
{
Console.WriteLine("没事，不在同一天");
}
}
public int CompareTo(WeeklyEntry other)
{
if (ReferenceEquals(this, other))
{
return(0);
}
if (ReferenceEquals(null, other))
{
return(1);
}
var weekdayComparison = Weekday.CompareTo(other.Weekday);
if (weekdayComparison != 0)
{
return(weekdayComparison);
}
return(string.Compare(Notes, other.Notes, StringComparison.Ordinal));
}
public static void Test3()
{
// 分别输出四个方向和对应的整数值
Console.WriteLine(MyDirection.East);
Console.WriteLine(MyDirection.South);
Console.WriteLine(MyDirection.West);
Console.WriteLine(MyDirection.North);
Console.WriteLine(Convert.ToInt32(MyDirection.East));
Console.WriteLine(Convert.ToInt32(MyDirection.South));
Console.WriteLine(Convert.ToInt32(MyDirection.West));
Console.WriteLine(Convert.ToInt32(MyDirection.North));
// 使用枚举类型的GetNames()方法
foreach (string s1 in Enum.GetNames(typeof(Weekday)))
{
Console.Write(s1 + " ");
}
Console.WriteLine("\n");
// 从命令行读取枚举类型变量的值
Console.Write("今天是星期几? ");
Weekday wd3 = (Weekday)Enum.Parse(typeof(Weekday), Console.ReadLine());
Console.WriteLine("明天是{0}", NextDay(wd3));
Console.WriteLine();
// 比较枚举类型的值
Console.Write("体育课在星期几? ");
Weekday wd1 = (Weekday)Enum.Parse(typeof(Weekday), Console.ReadLine());
Console.Write("物理试验在星期几? ");
Weekday wd2 = (Weekday)Enum.Parse(typeof(Weekday), Console.ReadLine());
if (wd1.CompareTo(wd2) == 0)
{
Console.WriteLine("糟糕，在同一天。");
}
else
{
Console.WriteLine("没事，不在同一天");
}
}
public int CompareTo(WeeklyEntry other)
{
var result = 0;
if (ReferenceEquals(this, other))
{
result = 0;
}
else if (ReferenceEquals(null, other))
{
result = 1;
}
else
{
result = Weekday.CompareTo(other.Weekday);
}
if (result == 0)
{
result = string.Compare(this.Notes, other.Notes, StringComparison.Ordinal);
}
return(result);
}