LINQ is a feature of the C# 3.0 and Visual Basic.NET programming languages. LINQ enables object-oriented querying, supports compile-time checks, provides IntelliSense support in Visual Studio, and specifies a uniform, SQL-like vocabulary for querying any data source. LINQ, on the other hand, may query any data source, unlike other languages and query syntaxes that differ depending on the kind of data source. As a result, developers could discover that it’s the only query syntax they’ll ever need to master. Objects, collections, XML, and SQL server data sources are all routinely queried using it.
With the 2010 release, LINQ to SharePoint is now officially supported. It’s comparable to LINQ to SQL or LINQ to Entity in how it works.
The Microsoft.SharePoint package contains the LINQ to SharePoint Provider.
Namespace for Linq. It converts LINQ queries into queries written in the Collaborative Application Markup Language (CAML). Microsoft SharePoint is the LINQ to SharePoint provider’s gateway class. Linq. A SharePoint Foundation website’s data is represented by a DataContext.