C# Interview Question #41

What is LINQ in C#?

LINQ & Querying Mid-Level Intermediate

Quick Interview Answer

LINQ stands for Language Integrated Query. It provides a consistent, strongly typed way to query collections, arrays, databases, XML, and other data sources directly from C#.

Detailed Explanation

LINQ stands for Language Integrated Query. It provides a consistent, strongly typed way to query collections, arrays, databases, XML, and other data sources directly from C#.

LINQ operators include Where, Select, OrderBy, GroupBy, Join, Any, All, FirstOrDefault, and many others. In Entity Framework Core, LINQ expressions can be translated into SQL and executed by the database.

LINQ improves readability and reduces repetitive looping and filtering code.

Code Example

var activeProducts = products
    .Where(p => p.IsActive)
    .OrderBy(p => p.Name)
    .ToList();