How do I cast int to enum in C#?

Question

How do I cast an int to an enum in C#?

Answer 1

From an int:

YourEnum foo = (YourEnum)yourInt;

From a string:

YourEnum foo = (YourEnum) Enum.Parse(typeof(YourEnum), yourString);

// The foo.ToString().Contains(",") check is necessary for 
// enumerations marked with a [Flags] attribute.
if (!Enum.IsDefined(typeof(YourEnum), foo) && !foo.ToString().Contains(","))
{
    throw new InvalidOperationException(
        $"{yourString} is not an underlying value of the YourEnum enumeration."
    );
}

Dynamically (type not known at compile-time):

Type enumType = ...;

// NB: Enums can specify a base type other than 'int'
int numericValue = ...;

object boxedEnumValue = Enum.ToObject(enumType, numericValue);