Question

Can someone help me take this Linq query and show me how to pull out the Distinct product Names

List<StatePlan> planTypes = (from ppt in context.PlanPlanTypes
     join pt in context.PlanTypes on ppt.PlanTypeRowID equals pt.PlanTypeRowID
     join ppts in context.PlanPlanTypeStates on ppt.PlanPlanTypeRowID equals ppts.PlanPlanTypeRowID
     join p in context.Plans on ppt.PlanRowID equals p.PlanRowID
     where ppts.StateCode == stateCode
     where p.IsActive == true
     select new StatePlan
     {   
         PlanID = p.PlanRowID,
         StateCode = stateCode,
         Name = p.Name,
         Description = p.Description,
         Disclaimer = p.Disclaimer,
         Sequence = p.DisplaySequence,
         //Rates = GetRates(p.PlanRowID),
         //Types = GetPlanTypes(p.PlanRowID, stateCode)
     }).ToList();
return planTypes;

Answer 1

Group it first then take the first

List<StatePlan> planTypes = (from ppt in context.PlanPlanTypes
                                             join pt in context.PlanTypes on ppt.PlanTypeRowID equals pt.PlanTypeRowID
                                             join ppts in context.PlanPlanTypeStates on ppt.PlanPlanTypeRowID equals ppts.PlanPlanTypeRowID
                                             join p in context.Plans on ppt.PlanRowID equals p.PlanRowID
                                             where ppts.StateCode == stateCode
                                             where p.IsActive == true
                                             select new StatePlan
                                             {   
                                                 PlanID = p.PlanRowID,
                                                 StateCode = stateCode,
                                                 Name = p.Name,
                                                 Description = p.Description,
                                                 Disclaimer = p.Disclaimer,
                                                 Sequence = p.DisplaySequence,
                                                 //Rates = GetRates(p.PlanRowID),
                                                 //Types = GetPlanTypes(p.PlanRowID, stateCode)
                                             })
                                             .GroupBy(g => g.Name)
                                             .Select(s => s.First())
                                             .ToList();
            return planTypes;