Converting SQL ON Clause to LINQ

Question

I'm not sure exactly how to convert this SQL to LINQ:

LEFT JOIN pppltd.dbo.weboeordd ON pppltd.dbo.WEBOEORDD.ITEMNO = REPLACE(datawarehouse.dbo.ORDERFORMDUMP.ITEMNO,'-','') and weboeordd.ORDUNIQ = weboeordh.orduniq

This is the LINQ I have:

join weboeordd in db.WebOEOrdD on item.ITEMNO.Replace("-", "") equals weboeordd.ITEMNO && weboeordd.ORDUNIQ == db.WebOEOrdH.ORDUNIQ

The compiler is giving me an error on the right side of the " == " operator saying that "WebOEOrdH" doesn't have a definition for ORDUNIQ, but I know it does in the model.

UPDATE

Ivan Stoev has been kind enough to leave a link from MSDN on joins using composite keys

As a result, I've changed my LINQ to use anonymous types:

join weboeordd in db.WebOEOrdD on new { itemno = item.ITEMNO.Replace("-", ""), orduniq = weboeordh.ORDUNIQ } equals new { itemno = weboeordd.ITEMNO, orduniq = weboeordd.ORDUNIQ }

Answer 1

You should rather use equals LINQ operator instead of == comparison operator. See MSDN for join clause (C# Reference)

Answer 2

Ivan Stoev has been kind enough to leave a link from MSDN on joins using composite keys

As a result, I've changed my LINQ to use anonymous types:

join weboeordd in db.WebOEOrdD on new { itemno = item.ITEMNO.Replace("-", ""), orduniq = weboeordh.ORDUNIQ } equals new { itemno = weboeordd.ITEMNO, orduniq = weboeordd.ORDUNIQ }