C# using numbers in an enum

Question

This is a valid enum

public enum myEnum
{
  a= 1,
  b= 2,
  c= 3,
  d= 4,
  e= 5,
  f= 6,
  g= 7,
  h= 0xff
};

But this is not

Answer 1

Here is what i came up with as an alternative, where I needed Enums to use in a "for" Loop and a string representation equivalent to use in a Linq query.

1. Create enums namespace to be used in "for" Loop.

public enum TrayLevelCodes
    {
        None,
        _5DGS,
        _5DG,
        _3DGS,
        _3DG,
        _AADC,
        _ADC,
        _MAAD,
        _MADC
    };

2. Create strings based on enum created to be used for Linq query

public string _5DGS = "\"5DGS\"",
        _5DG = "\"5DG\"",
        _3DGS = "\"3DGS\"",
        _3DG = "\"3DG\"",
        _AADC = "\"AADC\"",
        _ADC = "\"ADC\"",
        _MAAD = "\"MAAD\"",
        _MADC = "\"MADC\"";

3. Create function that will take an enum value as argument and return corresponding string for Linq query.

public string GetCntnrLvlDscptn(TrayLevelCodes enumCode)
        {
            string sCode = "";
            switch (enumCode)
            {
                case TrayLevelCodes._5DGS:
                    sCode = "\"5DGS\"";
                    break;
                case TrayLevelCodes._5DG:
                    sCode = "\"5DG\"";
                    break;
                case TrayLevelCodes._3DGS:
                    sCode = "\"3DGS\"";
                    break;
                case TrayLevelCodes._3DG:
                    sCode = "\"3DG\"";
                    break;
                case TrayLevelCodes._AADC:
                    sCode = "\"AADC\"";
                    break;
                case TrayLevelCodes._ADC:
                    sCode = "\"AAC\"";
                    break;
                case TrayLevelCodes._MAAD:
                    sCode = "\"MAAD\"";
                    break;
                case TrayLevelCodes._MADC:
                    sCode = "\"MADC\"";
                    break;
                default:
                    sCode = "";
                    break;
            }
                return sCode;
        }

4. Here is how i am using what i created above.

for (var trayLevelCode = TrayLevelCodes._5DGS; trayLevelCode <= TrayLevelCodes._MADC; trayLevelCode++)
{
    var TrayLvLst = (from i in pair1.Value.AutoMap
                     where (i.TrayLevelCode == HTMLINFO.GetCntnrLvlDscptn(trayLevelCode))
                     orderby i.TrayZip, i.GroupZip
                     group i by i.TrayZip into subTrayLvl
                     select subTrayLvl).ToList();
    foreach (DropShipRecord tray in TrayLvLst)
    {

    }
}