1.enum 指定型別
2.檢查要轉換的變數是否在範圍內,int 轉enum
3.enum 轉 int
4.列舉enum 所有的 value
5.列出enum 所有的 value
void Main()
{
int testValue = 7;
// 2.檢查要轉換的變數是否在Enum的範圍之內
if (!Enum.IsDefined(typeof(DayOfWeekType), testValue))
{
"Error".Dump();
}
// 2.convert int to enum
DayOfWeekType dayOfWeek = (DayOfWeekType)testValue;
$"Convert int to enum:{dayOfWeek}".Dump();
// 3.Convert enum to int
int sunday = DayOfWeekType.Sunday.GetHashCode();
$"Convert enum to int:{sunday}".Dump();
// 4.列舉Enum所有的值
int[] dayOfWeekValues = (int[])Enum.GetValues(typeof(DayOfWeekType));
"列舉Enum所有的值:".Dump();
foreach (var value in dayOfWeekValues)
{
$"Value:{value}".Dump();
}
// 5.列舉Enum所有的Names
string[] dayOfWeekNames = Enum.GetNames(typeof(DayOfWeekType));
"列舉Enum所有的Names:".Dump();
foreach (var name in dayOfWeekNames)
{
$"Name:{name}".Dump();
}
}
// 1.定義enum,可以在後面指定型別,預設是int
public enum DayOfWeekType : int
{
/// <summary>
/// 星期一
/// </summary>
Monday = 1,
/// <summary>
/// 星期二
/// </summary>
Tuesday = 2,
/// <summary>
/// 星期三
/// </summary>
Wednesday = 3,
/// <summary>
/// 星期四
/// </summary>
Thursday = 4,
/// <summary>
/// 星期五
/// </summary>
Friday = 5,
/// <summary>
/// 星期六
/// </summary>
Saturday = 6,
/// <summary>
/// 星期日
/// </summary>
Sunday = 7
}