enum to convert int in c# MVC?

Question

User-1933134441 posted

How to int cast in enum in c#?

Answer 1

User475983607 posted

DevTeams

How to int cast in enum in c#?

I recommend going through the C# programming guide.

https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/enumeration-types

Example

public enum Colors
{
    Red,
    Green,
    Blue
}

Implementation

int colorId = (int)Colors.Blue;

Answer 2

User-821857111 posted

int x = (int)MyEnum

or the other way round:

enum y = (MyEnum)x; 

Answer 3

User-1038772411 posted

Hello DevTeams,

Kindly refer the following links

Every Enum is actually represented by an int per default. You should manually specify member values. By default it starts from 0 to N. It's also possible to cast Enum to string and vice versa.

Reference 

https://stackoverflow.com/questions/8899498/is-it-possible-to-cast-integer-to-enum/8899574#8899574

https://stackoverflow.com/questions/29482/cast-int-to-enum-in-c-sharp/29485#29485

Thank You

Answer 4

User1520731567 posted

Hi DevTeams，

Enum provides a base class for enumerations whose base type can be any integer other than Char.

Use Int32 if the underlying type is not explicitly declared.

A programming language usually provides a syntax to declare an enumeration consisting of a set of named constants and their values.

Note: The base type of an enumerated type is any integer other than Char, so the value of the enumerated type is an integer value.

So,we just add strong type to convert,for example:

public enum Colors { Red, Green, Blue, Yellow };

Enum-->Int
(int)Colors.Red  //return 0  

Int-->Enum
Colors color = (Colors)2 //color:Colors.Blue

If convert to string,you could use static function:

String-->Enum

public static Object Parse(Type enumType,string value)

(Colors)Enum.Parse(typeof(Colors), "Red")

in addition,A method to determine if an integer is defined in an enumeration: Enum.IsDefined:

public static bool IsDefined(Type enumType,Object value)

Enum.IsDefined(typeof(Colors), n))

Best Regards.

Yuki Tao