Add Unique records in StudentCollection

Question

Hi

I have below code & i want only distinct records in StudentCollection.

List<View_SessionDeliveryParticipant_Detailed_Report> objResult = bALSessionDeliveryParticipant.GetSessionDeliveryParticipantList(Convert.ToDateTime("2020-01-01"), Utility.CurrentDateTime(), MentorCollection, GroupCollection);
                if (objResult != null)
                {
                    foreach (var colum in objResult)
                    {
                        StudentCollection.Add(colum.StudentID.ToString());
                    }
                }

Thanks

Amit Mohanty · Answer

try this: List objResult = bALSessionDeliveryParticipant.GetSessionDeliveryParticipantList(Convert.ToDateTime("2020-01-01"), Utility.CurrentDateTime(), MentorCollection, GroupCollection); if (objResult != null) { StudentCollection = objResult.Select(colum => colum.StudentID.ToString()).Distinct().ToList(); }

Aravind Govindaraj · Answer

Hi Ramco, you could get the desired result in a couple of approaches 1. you can get a distinct result from the backend in the get method (bALSessionDeliveryParticipant.GetSessionDeliveryParticipantList) 2. Before adding to StudentCollection, please check if the student id already exists in the collection. if ! (StudentCollection.Any(x=>x.StudentId == column.StudentID) { StudentCollection.Add(colum.StudentID.ToString()); }

Add Unique records in StudentCollection

Answers (2)