Is it possible to give enum dayofweek value

Question

I have an enum value that represent a range of week days (eg Sunday until Friday) that I present to user in a friendly name.

I tried to give it the value

(SunTilTHur = DayOfWeek.Sunday + DayOfWeek.Monday + DayOfWeek.Tuesday)

but I'm getting the error

The switch statement contains multiple cases with the label value

The code I tried:

public MyDayOfWeek Days { get; set; }
public string DaysFriendlyName => this.Days.ToFriendlyName();`
public enum MyDayOfWeek
{
    Sunday = DayOfWeek.Sunday,
    Monday = DayOfWeek.Monday,
    // ..

    SunTilFir = DayOfWeek.Sunday + DayOfWeek.Monday + DayOfWeek.Tuesday,//+...

    public static string ToFriendlyName(this MyDayOfWeek days)
    {
        switch (days)
        {
            case MyDayOfWeek.SunTilFir:
                    return @Resources.FormResources.SunTilFri;

Is it possible to set this values and how? Thanks in advance.

Answer 1

There's no point in wrapping the DayOfWeek enum in an enum. I would create your own helper class and add the methods you need to satisfy the range of checks. I've used a similar approach to the below when I needed to know when a day was a working day or weekend etc for a payments system... which seemed to work.

public static class MyDayHelper
{
    public static bool IsWeekDay(DayOfWeek myday)
    {
        return myday >= DayOfWeek.Monday && myday <= DayOfWeek.Friday;
    }

    public static bool IsWeekEnd(DayOfWeek myday)
    {
        return myday == DayOfWeek.Saturday || myday == DayOfWeek.Sunday;
    }

    public static string ReturnWeekdays()
    {
        return string.Format("{0},{1},{2},{3},{4}", DayOfWeek.Monday, DayOfWeek.Tuesday,
            DayOfWeek.Wednesday, DayOfWeek.Thursday, DayOfWeek.Friday);
    }

    public static string SunTilFri
    {
        get
        {
            return string.Format("{0},{1},{2},{3},{4},{5}", DayOfWeek.Sunday, DayOfWeek.Monday, DayOfWeek.Tuesday,
                DayOfWeek.Wednesday, DayOfWeek.Thursday, DayOfWeek.Friday);
        }
    }

}

You can obviously add the relevant methods for you...then you can test the conditions based upon what your current day is

var myDay = DateTime.Now.DayOfWeek;

            if (MyDayHelper.IsWeekDay(myDay))
            {
                //Do something
            }

            if (MyDayHelper.IsWeekEnd(myDay))
            {
                //Do something
            }

Hope that helps you come up with a solution.