LINQ Queries

LINQ (Language-Integrated Query) is a set of extensions of the .NET Framework, that includes language integrated queries and operations on the elements of a certain data source (most often arrays or collections). LINQ is a very powerful tool, similar to most SQL languages by logic and syntax. It actually works with collections in the same way as SQL languages work with table rows in databases. It is part of the syntax of C# and Visual Basic .NET and consists of few special keywords like from, in and select. In order to use LINQ queries in C#, we have to include a reference to System.Core.dll and to include the namespace System.Linq in the beginning of the C# program.