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The way you'd do a join on more than one criteria generally is to use an anonymous type: join pc in productcategory on new { Id = p.Id, Other = p.Other } equals new { Id = pc.ProdId, Other = pc.Other }. This works in Linq-to-Objects, and I presume the same will work with database queries as well.
1 kwi 2017 · var db1 = (from a in AccYearEntity.OBLHManifests select a).ToList(); var db2 = (from a in MasterEntity.UserMasters select a).ToList(); var query = (from a in db1. join b in db2 on a.EnteredBy equals b.UserId. where a.LHManifestNum == LHManifestNum.
Inner Join (Join): The Join method performs an inner join by correlating the elements of two collections based on matching keys. It returns a new collection that includes elements from both collections where the keys match.
29 maj 2024 · A join of two data sources associates objects with objects that share an attribute across data sources. Learn about join methods in the LINQ framework in C#.
4 wrz 2022 · Joining Tables using the Join () Extension Method. With Entity Framework Core we can use the Join () extension method from the System.Linq library. What the Join method does is to correlate (or join) elements of two sequences using based on matching keys.
7 wrz 2023 · LINQ provides a fluent, intuitive and consistent way to query data sets. See how LINQ join operations simplify queries on multiple data sets
15 wrz 2021 · The examples in this topic demonstrate how to use the Join method to query a DataSet using the method query syntax. The FillDataSet method used in these examples is specified in Loading Data Into a DataSet .
