private void OnValidate( )
    {
        string XX, YY, ZZ;
        //XX определение
        switch ( itemRare )
        {
            case ItemRare.COMMON:
                XX = "15";
                break;
            case ItemRare.UNCOMMON:
                XX = "24";
                break;
            case ItemRare.RARE:
                XX = "36";
                break;
            case ItemRare.EPIC:
                XX = "63";
                break;
            case ItemRare.LEGENDARY:
                XX = "71";
                break;
            default:
                XX = "00";
                break;
        }
        //УУ определение
        switch ( itemType )
        {
            case ItemType.WEAPON:
                YY = "98";
                break;
            case ItemType.ARMOR:
                YY = "19";
                break;
            default:
                YY = "00";
                break;
        }
        //ZZ определение
        ZZ = itemLevel.ToString( );
        itemID = ( XX + YY + ZZ );
    }