How To Use LINQ in C# – With Code Examples

LINQ, part of the .NET framework, allows for powerful data querying through both language-level query syntax and method syntax. This post covers various LINQ methods such as `OrderBy`, `First`, `Single`, `SingleOrDefault`, and `Select` with examples on how to apply them. It also delves into deferred execution and method chaining, demonstrating how LINQ can optimize performance and allow for more complex, readable queries. Writing defensive code to handle changes in data over time is emphasized for error prevention.