midLINQ

What is deferred execution in LINQ?

Updated May 16, 2026

Short answer

Deferred execution means query runs only when iterated.

Deep explanation

LINQ queries are not executed immediately but when enumerated via foreach or ToList.

Real-world example

Building query dynamically before execution.

Common mistakes

  • Assuming query executes at declaration time.

Follow-up questions

  • What triggers execution?
  • Is it always beneficial?

More LINQ interview questions

View all →