What is LINQ equivalent of SQL’s “IN” keyword

Question

How can I write below sql query in linq

select * from Product where ProductTypePartyID IN
(
    select Id from ProductTypeParty where PartyId = 34
)
<         


        

Answer 1

There is no direct equivalent in LINQ. Instead you can use contains () or any other trick to implement them. Here's an example that uses Contains:

String [] s = new String [5];
s [0] = "34";
s [1] = "12";
s [2] = "55";
s [3] = "4";
s [4] = "61";

var  result = from d in  context.TableName
              where s.Contains (d.fieldname)
              select d;

check this link for details: in clause Linq

int[] productList = new int[] { 1, 2, 3, 4 };


var myProducts = from p in db.Products
                 where productList.Contains(p.ProductID)
                select p;