PLINQ /Parallel LINQ is part of the TPL (Task Parallel Library) and it makes your life easier when it comes to multi-core processor programming which is totally different from multithreading which allows more than one thread per process and you have no idea if they will be equally distributed across

Compare LINQ Queries for Single Items

by Garry Pilkington

Four LINQ queries for returning single values using LINQ queries.

DataLoadOptions and How to Use It in a Compiled LINQ Query

by Pranay Rana

DataLoadOption in LINQ allows immediate loading and filtering of related data

Dynamic Linq Queries

by StormySpike

Alright, let’s assume that we are lazy coders, we have building a lot of Linq queries lately, and it’s getting repetitive. We keep having to remember to add a certain where clause to every query, couldn’t we just abstract this somehow?

Dynamic Query with Linq

by Pranay Rana

Building dynamic query with LINQ

Dynamically Build LINQ Expressions

by Jeremy Likness

A primer on using LINQ to wring strongly typed queries directly in code

Dynamically Evaluating a JOIN Expression with Linq

by Don Kackman

How to dynamically evaluate a JOIN expression with Linq

Entity Framework Code First and WCF Data Services

by User 6619207

Entity Framework Code First and WCF Data Services

FileSystem Syncher – Part 3

by Vlad Neculai Vizitiu

FileSystem Syncher

Generating an MD5 Hash from a String Using LINQ

by Rion Williams

Generating an MD5 hash from a string using LINQ.

Generic Repository Pattern MVC

by Mayur V Lohite

Generic Repository Pattern MVC

Get File Names of a Particular File Type using LINQ

by Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

This is a simple trick to find file names of a particular file type existing in a folder.

Getting LineNumber(s) in your XLINQ

by Sacha Barber

Getting LineNumber(s) in your XLINQ

Getting started with LINQ

by Cyborgx37

LINQ is syntactical sugar for extension methods and lamda expressions. To understand LINQ, it is important to first grapple with these concepts.To begin, let's look at a simple and somewhat common scenario.

Getting Started with LINQ – Part 2

by rahulsahay20

Different projection strategies in LINQ

GroupBy Multiple Values in LINQ

by merlin981

A simple example to show you how to GroupBy Multiple Values using LINQ

Guide to Creating Dynamic LINQ Queries

by Raymund Macaalay

How to create dynamic LINQ queries.

Hands on Lab for Key Features Used in Silverlight/WPF Projects

by ManojKumar19

Hands on Lab for MVVM, Value Converter, XAML Binding, Delegate Command pattern, INotifyPropertyChange, Lambda Expression, LINQ etc. in Silverlight/WPF project

How to build a .NET binding in C# for a web API

by Pragmateek

This article will give you more concrete information, mainly source code, if you need to implement a web API binding in .NET using the C# language.

How to build a language binding for a web API

by Pragmateek

This article describes the general principles, without diving too deeply into technical details that would be specific to a given platform.

How to Get Name of the Member (Property Name, etc.) of a .NET Class Without Using Hard-coded/ Magic Strings

by nirman b doshi

How to get name of the member (property name, etc.) of a .NET class without using hard-coded/ magic strings

How to Instantiate Derived LINQ to SQL Entities

by HeWillem

How to instantiate derived LINQ to SQL entities

How to Join Multiple Columns with Linq To SQL

by Dave C Andrews

How to join multiple columns with Linq to SQL

How to Read Twitter Feeds With LINQ to XML

by merlin981

Twitter feeds are provided in RSS XML format. This makes it very easy for us to parse out the information we want from a feed using LINQ to XML.

How to Search Good Places to Travel (MongoDb LINQ & .NET Core)

by Petru Faurescu

Walkthrough article to run LINQ queries with MongoDB, import data and define indexes

How to Use LINQ GroupBy

by merlin981

How to use the LINQ GroupBy feature.

How to use LINQ to Sharepoint

by Raymund Macaalay

How to use LINQ to Sharepoint

IEnumerable and State Machines

by Vlad Neculai Vizitiu

IEnumerable and state machines

Improving LINQ Code Reusability: Select Method

by Rui Jarimba

A simple approach that will allow you to reuse the code used in the Select method

Inside a 'LINQ to SQL classes' file

by Duy H. Thai

Explore the essence of an 'LTS classes' file, the classes it generates, and how it connects the object model to the database model...

Into and Let in LINQ (Let vs. Into)

by Pranay Rana

In this post, I am going to show two keywords in C# 3.0 which are very helpful when playing with a set of object collections using LINQ.

IQueryable vs. IEnumerable in terms of LINQ to SQL queries

by Pranay Rana

Difference between IQueryable and IEnumerable in terms of LINQ to SQL queries.

Iterator Benchmarks that Shocked with Unexpected Results

by Dev Leader

This article is follow up content to previous articles I've written about iterators and collections, but the benchmark results were NOT what I expected!

Lambda Expression in C# 3.0

by Shakeel Iqbal

Lambda Expression is one of the best features of C# 3.0

Learning to Like LINQ or, Loving the LINQ Loquacious

by Steve Wellens

You can use the LINQ library functions, which are extension methods, without having to delve into Reverse Polish SQL.

Lightweight Task Scheduling for .NET / Silverlight

by Philipp Sumi

A lightweight task scheduling library that allows you to easily schedule the invocation of callback methods at specified times or intervals. Supports .NET 3.5 and Silverlight.

LINQ – Element Operations

by Arun Ramachandran India

Element operations in LINQ

LINQ – Language Integrated Query

by ambilykk

LINQ – Language Integrated Query

LINQ – Which Are the Aggregation Operators?

by Arun Ramachandran India

Which are the Aggregation operators in LINQ

LINQ and Lazy, Frenemies

by BC3Tech

LINQ is awesome and Lazy is handy as heck, but using them together requires some thought.

LINQ Deferred Execution - Lazy Evaluation

by Sandeep Shankar

In this post, we’ll see how the type of execution can boost performance in LINQ.

LINQ for PHP

by qenn

LINQ for PHP

LINQ Group By with NULL database values

by JasonShort

Group By with NULL database values in LINQ.

LINQ Joins with SelectMany

by Pranay Rana

SelectMany is a way to flatten several results into a single sequence.

LINQ query to compare only date part of DateTime

by Pranay Rana

LINQ query to compare only date part of DateTime.

LINQ to Entities Projection

by JasonShort

A few common SQL query patterns, and their Linq to Entities (EF) equivalents

LINQ to Objective-C

by Colin Eberhardt

Creating a LINQ-style API for Objective-C has proven to be relatively simple (and fun!). I have provided implementations for some of the most common and useful LINQ methods, however the .NET LINQ APIs for querying collections have a great many more methods than the ones I have covered.

LINQ to SQL Essentials

by Raymund Macaalay

LINQ to SQL Essentials

LINQ to SQL with NOLOCK

by ozkary

LINQ does not understand query hints: a workaround

LINQ to SQL: Left Join With Null Values

by Kristofer Kallsbo

Trying to join two tables that have a 1 to many relationship with LINQ to SQL

LINQ to SQL: Update several rows

by Kristofer Kallsbo

Updating several rows using LINQ to SQL.

LINQ to Visual Tree

by Colin Eberhardt

This blog post demonstrates a Linq API which can be used to query the WPF / Silverlight Visual Tree.

LINQ with Multiple Child Objects

by Adam Zuckerman

Pulling XML data into your objects

LINQ: Enhancing Distinct With The PredicateEqualityComparer

by Paulo Morgado

LINQ: Enhancing Distinct With The PredicateEqualityComparer

LINQ: Enhancing Distinct with the SelectorEqualityComparer

by Paulo Morgado

LINQ: Enhancing Distinct with the SelectorEqualityComparer

LINQ: Implementing IN and NOT IN

by Nizar Noorani

Implementing IN and NOT IN in LINQ

LINQ: Introducing The Skip Last Operators

by Paulo Morgado

LINQ: Introducing The Skip Last Operators

LINQ: Single vs. First

by Paulo Morgado

LINQ: Single vs. First

LINQ: Single vs. SingleOrDefault

by Paulo Morgado

LINQ: Single vs SingleOrDefault

LINQPad helps you learn LINQ

by JasonShort

LINQPad is sort of like a Notepad, you can write and edit .linq files using it.

LINQPad Helps You Learn LINQ

by JasonShort

LINQPad helps you learn LINQ

Log your LINQ query

by Pranay Rana

Log your LINQ query

Look Behind the IQueryable Curtain

by Jeremy Likness

Learn how to parse complex expression trees, and even modify them to alter IQueryable results.

LTS Data Access Layer

by Duy H. Thai

With LINQ-to-SQL, how many methods do we need for CRUD operations in ALL of the tables in a database? The answer is 4 - no kidding.

Map Data from Database Context to Excel Sheet using LINQ & Microsoft.Office.Interop.Excel

by Debopam Pal

Using Microsoft.Office.Interop.Excel library, you can bring your data from your database against LINQ query and store them into an Excel Sheet.

Mocking Expressions

by Vlad Neculai Vizitiu

Mocking/stubbing lambda expressions to have a bit more control over our unit tests

Optimizing LINQ

by matt warren

How to optimize Linq

Ordering Data in LINQ Queries by More Than One Column

by Pranay Rana

How to do ordering when you require to order data by using multiple columns

Paging in MongoDB – How to Actually Avoid Poor Performance ?

by Petru Faurescu

Best way, performance wise, to paginate results in MongoDB

Paging in MongoDB – How to Actually Avoid Poor Performance?

by Petru Faurescu

Few insights on how to better paginate results in MongoDB, and to achieve excellent performance

Playing Around with LINQ for JavaScript

by Duke Of Haren

Playing around with LINQ for JavaScript

PropertyBagTextWriter (Stream into Dictionary)

by James Curran

An article on PropertyBagTextWriter.

Putting the Fun in C# Local Functions

by Rion Williams

C# local functions and how they can be used to make code more readable

Querying Audit History

by YawerIqbal

Tips to query audit history

Real-time Filtering of a Grid or List

by levelnis

Real-time filtering of a grid or list

Repository Pattern

by adityaswami89

This blog post discusses the Repository Pattern

Run EF Core Queries on SQL Server From Blazor WebAssembly

by Jeremy Likness

What if I could write a LINQ query on a client the same way I would on a server, and execute it remotely with minimal configuration, setup, ritual and ceremony?

Sample LINQ with Multiple Joins and Selected Columns

by gmtzgtz

How to write a LINQ statement with multiple joins

Short But Very Useful regex – lookbehind, lazy, group, and backreference

by morzel

How to match text which is preceded by some other text? How to reference matched text to find closing tag? Read this post if you want to know the answers to these and few other questions.

Silverlight charts, and reaching my inner child

by Pete O'Hanlon

Silverlight charts, and reaching my inner child

Speed Up Blocking Functions with PLINQ

by JasonShort

In this article, I want to cover a particular problem I have had many times over the years. How do you speed up multithreaded apps that are bound by blocking functions, or long running I/O operations?

SQL Like Functionality in LINQ?

by Gaurav Aroraa

SQL Like Functionality in LINQ?

SqlDependency Based Caching of LINQ Queries

by rusanu

SqlDependency based caching of LINQ Queries

TFS SDK Get Groups Users Permissions using TFS API with Linqpad

by Tarun_Arora

How to use the TFS API to get the security groups, members, permissions and security settings of users in Team Projects in TFS

The Entity Framework (v1 and v4) Deal Breaker: TPT Inheritance

by Sam Meacham

So what’s wrong with EF’s TPT inheritance? The SQL that EF generates. With some simple testing (2 or 3 subclasses) everything may appear to be fine. In fact, you may even be impressed that EF manages to fetch all the data you need in a single trip, indeed, in a single query.

The Workings of Dynamic Lambda in LINQ

by Tragdor

A quick lesson in LINQ and dynamic Lambda statements

THREE Examples of Deferred vs. Immediate Execution in LINQ using C#

by Mithun Pattankar

Three examples of deferred vs. immediate execution in LINQ using C#

Three-tier .NET Application Utilizing Three ORM Technologies

by Bryan Thomas Weikel

CodeProject"LEK" is a three-tier .NET WinForms accounting application that can be configured at run time to use either LINQ to SQL, Entity Framework or NHibernate to access data in either a "main" or "testing" SQL Server database.

Unit of Work Design Pattern with Repository and Session

by adityaswami89

This article will guide you if you want to create your own custom ORM or a wrapper over the ORM. This is only for demo towards the Unit of work pattern with Repository and a singleton Session class.

Use LINQ to XML Instead of a Database

by Paul D. Sheriff

In this blog post, you will use LINQ to XML to read state codes from an XML file and display those values on a web page.

Using Expressions for Fun and Profit

by StormySpike

Using Expressions for Fun and Profit

Using LINQ to Filter by Object Type and Then Quantify

by Joe Rattz

Using LINQ to filter by object type and then quantify.

Using LINQ To Filter By Object Type and Then Quantify

by Joe Rattz

Using LINQ To Filter By Object Type and Then Quantify

Using LINQ to Query Dynamic Schema-less Cosmos DB Documents

by Jeremy Likness

A look at the latest Azure SDKs for .NET with a sample .NET Core app that uses the Cosmos DB SDK and LINQ to iterate over documents with a dynamic schema.

Using LINQ to SQL for ETL projects

by Bryan O'Connell

Using LINQ to SQL for ETL projects.

Welcome Microsoft Delegate! Lambda Expressions Right this Way…

by Chris_Green

Welcome Microsoft Delegate! Lambda Expressions right this way…

Why LINQ requires you to Func?

by Matthew Edmondson

What exactly is Func? What has it got to do with LINQ?

Working with LINQ to XML

by Komal Mangal

How to work with LINQ to XML