C# enum

In C#, enum is a value type data type. The enum is used to declare a list of named integer constants. It can be defined using the enum keyword directly inside a namespace, class, or structure. The enum is used to give a name to each constant so that the constant integer can be referred using its name.

enum WeekDays
{
    Monday = 0,
    Tuesday =1,
    Wednesday = 2,
    Thursday = 3,
    Friday = 4,
    Saturday =5,
    Sunday = 6
}

Console.WriteLine(WeekDays.Friday);
Console.WriteLine((int) WeekDays.Friday);

    public enum DayOfWeek
    {
        [Description("Sunday")]
        [ResourceName("DAY_OF_WEEK_SUNDAY")]
        Sunday = 1,

        [Description("Monday")]
        [ResourceName("DAY_OF_WEEK_MONDAY")]
        Monday = 2,
        
        [Description("Tuesday")]
        [ResourceName("DAY_OF_WEEK_TUESDAY")]
        Tuesday = 3,
        
        [Description("Wednesday")]
        [ResourceName("DAY_OF_WEEK_WEDNESDAY")]
        Wednesday = 4,
        
        [Description("Thursday")]
        [ResourceName("DAY_OF_WEEK_THURSDAY")]
        Thursday = 5,
        
        [Description("Friday")]
        [ResourceName("DAY_OF_WEEK_FRIDAY")]
        Friday = 6,
        
        [Description("Saturday")]
        [ResourceName("DAY_OF_WEEK_SATURDAY")]
        Saturday = 7,
    }

Enum methods:

Enum is an abstract class that includes static helper methods to work with enums.

Enum method	Description
Format	Converts the specified value of enum type to the specified string format.
GetName	Returns the name of the constant of the specified value of specified enum.
GetNames	Returns an array of string name of all the constant of specified enum.
GetValues	Returns an array of the values of all the constants of specified enum.
object Parse(type, string)	Converts the string representation of the name or numeric value of one or more enumerated constants to an equivalent enumerated object.
bool TryParse(string, out TEnum)	Converts the string representation of the name or numeric value of one or more enumerated constants to an equivalent enumerated object. The return value indicates whether the conversion succeeded.

Sources:

https://www.tutorialsteacher.com/csharp/csharp-enum