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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).
7 wrz 2023 · LINQ Inner Join With Multiple Conditions. If you want to use multiple conditions within your join, you can simply use more than one where clause. Let’s update our query once again:
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.)
25 kwi 2024 · This example shows how to join data from two comma-delimited files that share a common value that is used as a matching key. This technique can be useful if you have to combine data from two spreadsheets, or from a spreadsheet and from a file that has another format, into a new file.
LINQ provides several methods for performing joins, similar to SQL joins, to combine data from two or more collections based on a common key or condition. The primary join methods in LINQ are Join, GroupJoin, and SelectMany.
