C# Programs on LINQ

C# Programming Examples - LINQ

LINQ stands for Language Integrated Query. In C#, LINQ is used to access data from a variety of sources, including objects, collections, generics, ADO.NET datasets, SQL Server, and XML. We can easily get data from any object that implements the IEnumerable interface. The System.Linq namespace can be imported to add LINQ functionality to C# or VB.NET applications. LINQ includes a set of extension methods that allow us to query the source of a data object in code directly based on the query.

LINQ Objects in C#:

Below is a list of the various objects that can be used with LINQ.

  • LINQ to Objects
  • LINQ to DataSets
  • LINQ to SQL
  • LINQ to XML
  • LINQ to Strings
  • LINQ to Files
  • LINQ to Lists
  • LINQ to Entities

LINQ Advantages:

  • LINQ provides a common query syntax for all types of data sources.
  • LINQ expressions are Strongly-Typed expressions.
  • Visual Studio allows to debug Compile-time errors.
  • It gives access to a wide range of resources.
  • LINQ to SQL allows RAD with databases very well.

LINQ Disadvantages:

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  • LINQ is not good for writing complex queries like SQL Server.
  • The performance will suffer if the query is not written correctly.
  • In LINQ, the advanced query is difficult to grasp.
  • For small data sets, the query will take longer to generate than to execute.

The following section contains C# programs on LINQ, LINQ Applications, and LINQ usage in SQL clauses. Every example program includes the problem description, problem solution, C# code, program explanation, and run-time test cases. All C# examples have been compiled and tested on Visual Studio.

Here is the listing of C# programming examples on LINQ:

  1. C# Programs on LINQ Applications
  2. C# Programs on LINQ Usage in SQL Clauses

1. C# Programs on LINQ Applications

Program Description
Generate Odd Numbers in Parallel using LINQ in C# C# Program to Generate Odd Numbers in Parallel using LINQ
Calculate File Size using LINQ in C# C# Program to Calculate the Size of File using LINQ
Count File Extensions using LINQ in C# C# Program to Count File Extensions and Group it using LINQ
Divide Sequence into Groups using LINQ in C# C# Program to Divide Sequence into Groups using LINQ
IEnumerable Interface using LINQ in C# C# Program to Implement IEnumerable Interface using LINQ

2. C# Programs on LINQ Usage in SQL Clauses

Program Description
Select Clause LINQ in C# C# Program to Display the Student Details using Select Clause LINQ
FROM Clause LINQ in C# C# Program to Display the Smallest Numbers in an Array using FROM Clause LINQ
WHERE Clause LINQ in C# C# Program to Display the Greatest Numbers in an Array using WHERE Clause LINQ
Let Condition using LINQ in C# C# Program to Implement Let Condition using LINQ

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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