Search results
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.
I think a more readable and flexible option is to use Where function: var result = from x in entity1 from y in entity2 .Where(y => y.field1 == x.field1 && y.field2 == x.field2) This also allows to easily change from inner join to left join by appending .DefaultIfEmpty(). Share.
The basic syntax of a LINQ join is as follows: c. var result = from left in leftTable. join right in rightTable on left.Id equals right.Id. select new { left.Name, right.Value }; In this example, we are joining the `leftTable` and `rightTable` tables on the `Id` column.
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.
7 wrz 2023 · var query = from p in products join c in categories on new { Id = p.CategoryId, Status = p.Status } equals new { Id = c.Id, Status = c.Status } select new { Id = p.Id, Name = p.Name, Category = c.Name };
29 mar 2024 · LINQ has a JOIN query operator that provides SQL JOIN like behavior and syntax. As you know, Inner join returns only those records or rows that match or exists in both the tables. The simple LINQ inner join example is given below:
29 mar 2024 · The JOIN query operator compares the specified properties/keys of two collections for equality by using the EQUALS keyword. By default, all join queries written by the JOIN keyword are treated as equijoins. Let's understand the LINQ Joins using Venn diagram.
