Filter an IEnumerable in Linq with an array

Question

How to add a string array

string[] BranchIds = {"1","2","3"}

inside the Linq Contains?

some thing like this i'm looking for

var a =_abc.GetRoutes(0).Where(n => n.BranchId.Contains(BranchIds[])).ToList();

Here the BranchId is a String in the model

[Here](http://stackoverflow.com/questions/14257360/linq-select-objects-in-list-where-exists-in-a-b-c) is a duplicate. — Tim Schmelter, Mar 14 '17 at 16:22

score 5 · Accepted Answer · answered Mar 14 '17 at 16:16

5

You are trying to check whether branchId of route contains array of ids (that will not compile). You should do the opposite - check whether ids array contains branchId of route:

var a =_abc.GetRoutes(0).Where(r => BranchIds.Contains(r.BranchId)).ToList();

answered Mar 14 '17 at 16:16

Sergey Berezovskiy

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How to do this if the BranchId is a comma separated string of id's? – Sribin Mar 15 '17 at 05:57
@Sribin First convert that comma-separated string to a list of numbers. – Avner Shahar-Kashtan Mar 15 '17 at 06:47
@Avner i have tried like this ,but not working. _(userRepo.GetUserList(id).Where(n => BranchIds.Contains(n.StringBranchId.Replace(" ", "").Split(',').ToString()))_ – Sribin Mar 15 '17 at 06:56
@Sribin That's a different question, and should be asked separately. Or better yet, search for "split string into array of ints". – Avner Shahar-Kashtan Mar 15 '17 at 06:58
@Sribin then create list of ids from ids string: `var ids = BranchIds.Split(',').ToList()` and then use `ids.Contains(r.BranchId)` – Sergey Berezovskiy Mar 15 '17 at 07:26

score 1 · Answer 2 · answered Mar 14 '17 at 16:17

1

var a =_abc.GetRoutes(0).Where(n => BranchIds.Contains(n.BranchId)).ToList();

Switch the order, for every BranchId in n check if it contained with in BranchIds

answered Mar 14 '17 at 16:17

Ofir Winegarten

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Filter an IEnumerable in Linq with an array

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