Get max value from enum using generics

Question

How can I get the max int value from an enum using generics?

I have tried the following however it displays the following compilation error:

Cannot implicitly convert T to int

    int maxValue = GetMaxValue<SomeEnum>(typeof(SomeEnum)); //expecting 2

    private static int GetMaxValue<T>(Type enumType)
    {
        return Enum.GetValues(enumType).Cast<T>().Max();
    }

    public enum SomeEnum
    {
        ValueOne = 1,
        Value = 2
    }

Answer 1

In case of C# 7.3 or later version, you can implement Sweeper's idea in a bit different way (with a help of where T : Enum constraint):

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

...

SomeEnum max = GetMaxValue<SomeEnum>();

Please, note, that the result is enum itself and that's why we don't have any problems with enum underlying type (byte, short int, long)