Improper LINQ query patterns and exception handling

5/10 Medium

Developers use Where().First() instead of FirstOrDefault() or apply First() with conditions inefficiently, leading to unnecessary exceptions when no matching values are found. This is a common pattern mistake among C# developers.

C#LINQ
Category
dx
Workaround
solid
Stage
build
Freshness
persistent
Scope
single_lib
Recurring
Yes
Buyer Type
team

Sources

Collection History

Query: “What are the most common pain points with C# for developers in 2025?”4/5/2026

A lot of programmers find a certain set of elements by means of 'Where' and then return the first occurrence. This is inappropriate, because the 'First' method can be also applied with the 'Where' condition... it's better to use FirstOrDefault instead.

Created: 4/5/2026Updated: 4/5/2026