Question

I have a LINQ query:

 var result = (from CC in hc.ClaimCodings
                              join CM in hc.ClaimCodingProcedureCodeModifierXrefs on CC.ClaimCodingID equals CM.ClaimCodingID
                              join PCM in hc.ProcedureCodeModifiers on CM.ProcedureCodeModifierID equals PCM.ProcedureCodeModifierID
                              where CC.CTCustomerSubID == custSub && CC.ClaimID == claimID
                              select new { PCM.ModifierCode });

EDIT

Which can return 0 to 4 items. I want to set the value of each Modifier code to a property:

     public string ModCode1 { get; set; }

    public string ModCode2 { get; set; }

    public string ModCode3 { get; set; }

    public string ModCode4 { get; set; }

    Modcode1 = result.ModifierCode.getindex(0).firstordefault();

ModeCode2 = second result's ModifierCode;

etc 

etc

Unless I’m approaching this completely wrong. I’m not so good with LINQ yet 🙁

Answer 1

Is this what you have in mind?

var result = 
(
   from CC in hc.ClaimCodings
       join CM in hc.ClaimCodingProcedureCodeModifierXrefs 
           on CC.ClaimCodingID equals CM.ClaimCodingID
       join PCM in hc.ProcedureCodeModifiers 
           on CM.ProcedureCodeModifierID equals PCM.ProcedureCodeModifierID
   where CC.CTCustomerSubID == custSub && CC.ClaimID == claimID && 
         PCM.ModifierCode != null
   select PCM.ModifierCode
).ToList();

ModCode1 = result.Length > 0 ? result[0] : null;
ModCode2 = result.Length > 1 ? result[1] : null;
ModCode3 = result.Length > 2 ? result[2] : null;
ModCode4 = result.Length > 3 ? result[3] : null;

Main changes:

• Added PCM.ModifierCode != null check within LINQ query.
• Removed redundant anonymous type construction.
• Converted LINQ query result to List<string> through ToList().

However, as BrokenGlass said, you’re probably better off storing a list.