How do I cast int to enum in C#?

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."

From a number:

YourEnum foo = (YourEnum)Enum.ToObject(typeof(YourEnum), yourInt);

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