How to get distinct value from array of object in C#? [duplicate]

Question

I have an array of an object called storing, some of the object's attribute (skuID) is the same with some of the other storing with different (storingID), how do i make my array distinct depending on their (skuID)?

Storing(string storingID, skuID, storageID, price, expiry)

I have tried this but it doesn't work:

List<storing> storingAll = (List<storing>)Session["storingAll"];
List<storing> displayedStoring = storingAll.Distinct().ToArray();

stackoverflow.com/questions/489258/…

Sweeper
– Sweeper

2017-05-08 06:35:42 +00:00
Commented May 8, 2017 at 6:35 — Sweeper
– Sweeper, Commented May 8, 2017 at 6:35
@Sahir And yet you proposed an answer using LINQ?

Rawling
– Rawling

2017-05-08 06:41:57 +00:00
Commented May 8, 2017 at 6:41 — Rawling
– Rawling, Commented May 8, 2017 at 6:41

Community · Accepted Answer · 2017-05-23 11:54:51Z

6

storingAll.GroupBy(x=>x.skuID).Select(group=>group.First());

Note that this solution uses no external libraries. Simple group by the first occurrence of skuID.

Reference: How to get a distinct list from a List of objects?

edited May 23, 2017 at 11:54

CommunityBot

11 silver badge

answered May 8, 2017 at 6:40

Sahir

3291 gold badge2 silver badges9 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Jon Skeet Over a year ago

It uses no additional libraries, but may well consume a lot more memory than using MoreLINQ, as it needs to build up the groups. It's also non-streaming: it has to read all the elements before it can emit any of them.

Sahir Over a year ago

Agreed. You gotta make a trade off here.

Collectives™ on Stack Overflow

How to get distinct value from array of object in C#? [duplicate]

1 Answer 1

2 Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Linked

Related