Converts pascal camel case enum value to upper hyphenated string.

EnumHelper.cs

using System;
using System.Text;

internal static class EnumHelper
{
    public static string ToUpperHyphenated(Enum value)
    {
        var a = value.ToString();
        var b = new StringBuilder();

        for (int i = 0; i < a.Length; i++)
        {
            if (i > 0)
            {
                if (char.IsUpper(a[i]) ||
                    (char.IsDigit(a[i]) && !char.IsDigit(a[i - 1])))
                {
                    b.Append('-');
                }
            }
            b.Append(char.ToUpper(a[i]));
        }
        return b.ToString();
    }
}