Integer to enum casting in C#

 

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  • What does the [Flags] Enum Attribute mean in C#? 10 answers

    • Let's say your enum is this: 

    enum E {
    A = 1
    B = 2
    C = 4
    D = 8
}

    If you translate each value to it's binary value, you get: 

    A = 0001
B = 0010
C = 0100
D = 1000

    Now let's say you try to convert 12 , 1100 in binary, to this enum : 

    E enumTest = (E)12;

    It will output C|D

    | being the OR operator, C|D would mean 0100 OR 1000 , which gives us 1100 , or 12 in decimal.

    In your case, it's just trying to find which enum combination is equal to 67239937 . This is converted to binary as 100000000100000000000000001 . This then converts to Test2|Test16|Test20 or 1|(1 << 17)|(1 << 26) .

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