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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 } is the solution I referenced as assuming an equijoin above. Further EDIT
The difference of course is the explicit declaration of the columns as a variable to identify on. .Join(. context.Resources, o => new { Id = o.ResourceId, Type = o.ResourceTypeId}, i => new { Id = i.Id, Type = TypeId}, (o, i) = new { rType : i }; Agree with you for explicit give name to joined columns. Great answer.
7 wrz 2023 · 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: var query = from p in products join c in categories on p.CategoryId equals c.Id where p.Id >= 3 where c.Name.EndsWith('s') select new { Id = p.Id, Name = p.Name, Category = c.Name };
Learn how to join multiple conditions in LINQ with this comprehensive guide. Includes examples and code snippets to help you understand the concepts and get started quickly.
4 wrz 2024 · This guide delves deep into the art of joining multiple data sources using LINQ, equipping you with the knowledge and techniques to navigate complex data landscapes. We’ll explore various join types, unravel the intricacies of syntax, and illuminate best practices, all while working through practical examples.
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.)
In C#, you can perform a LINQ Join with multiple data sources by using the join keyword and the equals keyword combined with the on keyword. This allows you to combine data from multiple collections or sources based on a common key or condition. Here’s how you can do it:
