Enum to int best practice [duplicate]

Question

I can't select between two methods of converting. What is the best practice by converting from enum to int

1:

public static int EnumToInt(Enum enumValue) { return Convert.ToInt32(enumValue); }

2:

public static int EnumToInt(Enum enumValue) { return (int)(ValueType)enumValue; }

Nico · Accepted Answer · 2013-10-30 05:36:23Z

In addition to @dtb

You can specify the int (or flag) of your enum by supplying it after the equals sign.

enum MyEnum { Foo = 0, Bar = 100, Baz = 9999 }

Cheers

dtb · Accepted Answer · 2013-10-30 05:33:15Z

If you have an enum such as

enum MyEnum { Foo, Bar, Baz, }

and a value of that enum such as

MyEnum value = MyEnum.Foo;

then the best way to convert the value to an int is

int result = (int)value;

TGH · Accepted Answer · 2013-10-30 05:45:25Z

I would throw a third alternative into the mix in the form of an extension method on Enum

public static int ToInt(this Enum e) { return Convert.ToInt32(e); } enum SomeEnum { Val1 = 1, Val2 = 2, Val3 = 3, } int intVal = SomeEnum.ToInt();

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