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Translations: English | Spanish Take the following short quiz and test your knowledge of LINQ! All samples assume the following namespaces are imported: using System; using System.Linq; using System.Data.Linq; using System.Xml.Linq; using System.Collections; and that the following array is defined: string[] colors = { "green", "brown", "blue", "red" }; OK, let's get started! Q1. What does the foll

You might already have discovered that LINQ is addictive: once you're accustomed to solving problems through slick functional queries, it really hurts being forced back to the imperative style of C# 2.0! LINQ's query operators are implemented from .NET Framework 3.5. And here lies a difficulty: your clients might have only Framework 2.0 installed on their machines. So what does this mean if you wa

Extras Dynamically Composing Expression Predicates Suppose you want to write a LINQ to SQL or Entity Framework query that implements a keyword-style search. In other words, a query that returns rows whose description contains some or all of a given set of keywords. We can proceed as follows: IQueryable<Product> SearchProducts (params string[] keywords) { IQueryable<Product> query = dataContext.Pro

Last updated: 2011-4-27 Translations: Chinese | Czech | Persian | Russian | Japanese Download PDF Part 1: Getting Started Introduction and Concepts C# supports parallel execution of code through multithreading. A thread is an independent execution path, able to run simultaneously with other threads. A C# client program (Console, WPF, or Windows Forms) starts in a single thread created automaticall