C# 如何通过代码动态传递DaysOfTheWeek枚举值

我在task scheduler类中有下面的枚举值，当我创建任务时，我需要根据复选框的选择添加一周中的天数。如果选中了“星期一”复选框，则我只需要通过星期一（如果还选中了其他复选框，则有时需要多天）

在下面的代码中，我如何动态地度过这几天

public enum DaysOfTheWeek: short
{
    Sunday = 1,
    Monday = 2,
    Tuesday = 4,
    Wednesday = 8,
    Thursday = 16,
    Friday = 32,
    Saturday = 64,
    AllDays = 127
}

DaysOfWeek = DaysOfTheWeek.Monday | DaysOfTheWeek.Sunday;

---

你的问题没有提到循环，但你对我的评论的回答提到了循环。你是说：

DaysOfWeek = DaysOfTheWeek.Monday | DaysOfTheWeek.Sunday;

foreach (int day in Enum.GetValues(typeof(DaysOfTheWeek)))
{
    if ( day & DaysOfWeek ) {
        /* do something for this day */
    }
}

---

您可以像这样循环选择列表并创建枚举值：

var days = new[] {1, 4, 32};

var daysOfTheWeek = DaysOfTheWeek.None;
foreach (var day in days)
{
    daysOfTheWeek = daysOfTheWeek | (DaysOfTheWeek) day;
}

[Flags]
public enum DaysOfTheWeek
{
    None = 0,
    Sunday = 1,
    Monday = 2,
    Tuesday = 4,
    Wednesday = 8,
    Thursday = 16,
    Friday = 32,
    Saturday = 64,
    AllDays = 128
}

---

使用

标志

属性装饰枚举：

[Flags]
public enum DaysOfTheWeek : short

声明一个

DaysOfTheWeek

变量并将其初始化为零：

DaysOfTheWeek days = 0;

为勾选的每一天的枚举值添加标志。替换

bool sunday=true，周三=true此处包含检查复选框的代码：

bool sunday = true, wednesday = true; // this is just proof of concept

if (sunday)
    days |= DaysOfTheWeek.Sunday;
if (wednesday)
    days |= DaysOfTheWeek.Wednesday;

天数
输出：

星期日、星期三

正如Shahriar Gholami所建议的，完整代码如下：

class Program
{
    static void Main(string[] args)
    {
        var daysOfWeek = GetDaysOfTheWeek(new List<DaysOfTheWeek> {DaysOfTheWeek.Monday, DaysOfTheWeek.Sunday});
        Console.WriteLine(daysOfWeek); //3
    }

    public static DaysOfTheWeek GetDaysOfTheWeek(List<DaysOfTheWeek> selectedDays)
    {
        var daysOfTheWeek = DaysOfTheWeek.None;
        foreach (var day in selectedDays)
        {
            daysOfTheWeek = daysOfTheWeek | day;
        }
        return daysOfTheWeek;
    }
}

[Flags]
public enum DaysOfTheWeek : short
{
    None = 0,
    Sunday = 1,
    Monday = 2,
    Tuesday = 4,
    Wednesday = 8,
    Thursday = 16,
    Friday = 32,
    Saturday = 64,
    AllDays = 127
}

类程序
{
静态void Main（字符串[]参数）
{
var daysOfWeek=GetDaysOfTheWeek（新列表{DaysOfTheWeek.Monday，DaysOfTheWeek.Sunday}）；
Console.WriteLine（daysOfWeek）；//3
}
公共静态DaysOfTheWeek GetDaysOfTheWeek（列出所选日期）
{
var daysOfTheWeek=daysOfTheWeek.None；
foreach（选定日期中的var日）
{
daysOfTheWeek=daysOfTheWeek |天；
}
每周返回一天；
}
}
[旗帜]
公共枚举DaysOfTheWeek:短
{
无=0，
星期日=1，
星期一=2，
星期二=4，
星期三=8，
星期四=16，
星期五=32，
星期六=64，
所有天数=127
}
每周的
天的类型是什么？如果是
短的
，它应该像你做的那样工作。但我不想以这种方式通过。我想通过循环取决于选中的复选框使用
开关盒
，如果选择了天，则选择其值