將Int32轉換爲布爾

Question

我目前正在編寫一個查看SQL代理作業的應用程序。我試圖將FrequencyInterva l屬性轉換爲7 bool字段（每天一個）

我在考慮對每種可能的組合使用case語句，但想知道是否有更有效的方法？

Answer 1

你不需要七個bool變量，但是你可以用attribute Flags定義一個枚舉值，其值等於爲那個屬性定義的值。 然後將FrequencyInterval屬性分配給此枚舉類型的變量。

[Flags] 
public enum frequencyDaysEnum 
{ 
    Sunday = 1, 
    Monday = 2, 
    Tuesday = 4, 
    Wednesday = 8, 
    Thursday = 16, 
    Friday = 32, 
    Saturday = 64, 
// You can also add these but they are not necessary 
// WeekDays = 62, 
// WeekEnds = 65, 
// EveryDay = 127 
} 

void Main() 
{ 
    int value = 65; // <= this is the value of your property 
    frequencyDaysEnum days = (frequencyDaysEnum)value; 

    if(days.HasFlag(frequencyDaysEnum.Saturday)) 
     Console.WriteLine("It has frequency on Saturday"); 

    if (days.HasFlag(frequencyDaysEnum.Sunday)) 
     Console.WriteLine("It has frequency on Sunday"); 
}