How to use SegmentGroup

Hi everyone,

I´m trying to implement the EDIFACT VERMAS D16B, and I´m having a hard time understanding/using SegmentGroup.

I´ve created classes for Elements and Segments, for example my CTA Segment is defined as

    [EdiSegment, EdiPath("CTA")]
    public class CTA
    {
        [EdiValue("X(3)", Path = "CTA/0")]
        public string ContactFunctionCoded { get; set; }

        [EdiElement, EdiPath("CTA/1")]
        public C056 ContactDetails { get; set; }
    }

and the C506 Element

    [EdiElement]
    public class C056
    {
        [EdiValue("X(17)", Path = "*/*/0")]
        public string ContactIdentifier { get; set; }

        [EdiValue("X(256)", Path = "*/*/1")]
        public string ContactName { get; set; }
    }

My question is what would be the best/correct way to implement the GRP2 class?

• NAD is mandatory, so should I use EdiSegment(Mandatory=true)? Wouldn´t that force GRP3 List to be mandatory also?
• How should I define the SegmentGroup? EdiSegmentGroup("NAD", "GRP3") or EdiSegmentGroup("NAD", "CTA", "COM")
• Should I decorate public List<GRP3> GRP3{ get; set; } with any attribute? For example [EdiSegment]

    [EdiSegment(Mandatory=true), EdiSegmentGroup("NAD", ""GRP3")]
    public class GRP2: NAD
    {
        public List<GRP3> GRP3{ get; set; }

        public GRP2()
        {
            GRP3= new List<GRP3>();
        }
    }

Thank you for your help!

Start from the EdiSegmentGroup and EdiSegment attributes shown in the GRP2, CTA, and C056 declarations, along with the GRP3 list property. Determine how mandatory NAD and repeated GRP3 groups are represented, then document the correct declaration and the expected parsed structure.