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Is it possible in LINQ to join on multiple fields in a single join? EDIT var result = from x in entity join y in entity2 on new { x.field1, x.field2 } equals new { y.field1, y.field2 }
14 gru 2011 · You can't do an "or" style join in LINQ with an actual join clause. All join clauses in LINQ are equijoins. The closest you can come is a where clause: var query = from a in A from b in B where a.Foo == b.Foo || a.Foo == b.Bar select new { a, b };
In SQL you could make it part of a join statement... FROM tblAccounts c INNER JOIN tblAccountAssociations a ON c.AccountCode = a.ChildCode AND a.AssociationType == "DS" ... but in Linq statments you just add it as a predicate, the way you did (apart from the "and" issue).
In C#, you can perform a LINQ Join with multiple data sources by using the join keyword and the equals keyword combined with the on keyword. This allows you to combine data from multiple collections or sources based on a common key or condition. Here’s how you can do it:
This example demonstrates how LINQ can be used to manipulate and access data from in-memory collections with SQL-like syntax for joining, filtering, and selecting.
You can join two tables on multiple columns by using the `on` clause multiple times. For example, the following code joins the `customers` and `orders` tables on the `CustomerId` and `OrderId` columns:
29 maj 2024 · The join methods provided in the LINQ framework are Join and GroupJoin. These methods perform equijoins, or joins that match two data sources based on equality of their keys. (For comparison, Transact-SQL supports join operators other than equals, for example the less than operator.)
