Getting the max value of an enum

Question

How do you get the max value of an enum?

Answer 1

According to Matt Hamilton's answer, I thought on creating an Extension method for it.

Since ValueType is not accepted as a generic type parameter constraint, I didn't find a better way to restrict T to Enum but the following.

Any ideas would be really appreciated.

PS. please ignore my VB implicitness, I love using VB in this way, that's the strength of VB and that's why I love VB.

Howeva, here it is:

C#:

static void Main(string[] args)
{
    MyEnum x = GetMaxValue(); //In newer versions of C# (7.3+)
    MyEnum y = GetMaxValueOld();  
}

public static TEnum GetMaxValue()
  where TEnum : Enum
{
     return Enum.GetValues(typeof(TEnum)).Cast().Max();
}

//When C# version is smaller than 7.3, use this:
public static TEnum GetMaxValueOld()
  where TEnum : IComparable, IConvertible, IFormattable
{
    Type type = typeof(TEnum);

    if (!type.IsSubclassOf(typeof(Enum)))
        throw new
            InvalidCastException
                ("Cannot cast '" + type.FullName + "' to System.Enum.");

    return (TEnum)Enum.ToObject(type, Enum.GetValues(type).Cast().Last());
}



enum MyEnum
{
    ValueOne,
    ValueTwo
}

VB:

Public Function GetMaxValue _
    (Of TEnum As {IComparable, IConvertible, IFormattable})() As TEnum

    Dim type = GetType(TEnum)

    If Not type.IsSubclassOf(GetType([Enum])) Then _
        Throw New InvalidCastException _
            ("Cannot cast '" & type.FullName & "' to System.Enum.")

    Return [Enum].ToObject(type, [Enum].GetValues(type) _
                        .Cast(Of Integer).Last)
End Function