LINQ is a technology for extracting data using an idiom derived from the C# programming language. While it owes much in functional design to SQL, it is fundamentally its own data querying language.

Apr 27, 2015 · When this is a linq-to-object call, multiple where clauses will lead to a chain of IEnumerables that read from each other. Using the single-clause form will help performance here. …

Mar 22, 2009 · I love using LINQ in .NET, but I want to know how that works internally?

Feb 1, 2013 · I am trying to convert an old raw Sql query in Linq with Entity Framework here. It was using the IN operator with a collection of items. The query was something like that: SELECT …

Oct 28, 2010 · Linq, as a built-in technology, has performance advantages and disadvantages. The code behind the extension methods has had considerable performance attention paid to it by the .NET …

Dec 11, 2025 · I am new to LINQ query and trying figure out how to filter list of records based on the list of IDs found in the sub-query inside. Basically, I am looking for the option similar to SQL "IN" ...

Jun 6, 2009 · How to make a where in clause similar to one in SQL Server? I made one by myself but can anyone please improve this? public List<State> Wherein(string listofcountrycodes) { ...

Apr 25, 2017 · Wide range of operators provided by default, and others can easily be added for LINQ to Objects Language features introduced primarily for LINQ are widely applicable elsewhere (yay for …

Aug 14, 2008 · We're working on a Log Viewer. The use will have the option to filter by user, severity, etc. In the Sql days I'd add to the query string, but I want to do it with Linq. How can I conditionally add...

But LINQ and lambdas are two totally different things, both of which can be used by themselves. Update: As svick rightly points out, LINQ with query syntax is also implemented using lambda …