Code inspection: Replace with FirstOrDefault($args$)

This inspection reports a guarded conditional expression that first checks another condition and then uses Any(...) ? First(...) : null. When the guard is true, the inner Any/First pair can be simplified to FirstOrDefault(...).

Example

                var result = isEnabled && items.Any(x => x.IsValid)
                    ? items.First(x => x.IsValid)
                    : null;
            

                var result = isEnabled
                    ? items.FirstOrDefault(x => x.IsValid)
                    : null;
            

Quick-fix

Replace the guarded Any(...) ? First(...) : null pattern with FirstOrDefault(...).

29 March 2026