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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.
If you are allowed to use LINQ, take a look at the following example. It creates two DataTables with integer columns, fills them with some records, join them using LINQ query and outputs them to Console.
LINQ (Language-Integrated Query) is a powerful tool that can be used to do just that. With LINQ, you can easily join data from different tables, filter results, and perform other operations. In this article, we’ll take a look at how to use LINQ to join multiple tables on multiple conditions.
20 wrz 2024 · I have an excel file and I am trying to find matching values based on these criteria. For ARMADAS B2: D542295890, I am getting the ARMADAW A2:B05KAYIP. I will look for B05KAYIP in the E column ARMADAIWC and get the corresponding D SAPIWC value 0010.
23 lip 2024 · Learn how to effectively join two tables using lambda expressions in C# to enhance your data manipulation skills. Explore step-by-step examples and best practices.
8 kwi 2021 · When you’ve created tables that are related, you’ll often need to get data from both tables at once, or filter records from one table based on values in another table. In this article, I’ll show examples of executing queries like this where more than one table is involved.
4 wrz 2022 · I will show two methods for executing joins between tables. The first method is with the LINQ to SQL method with the familiar join operator, and the second is with Entity Framework Core and the Join () extension method.
