Use cast instead of select (ARCH606)

Key dotnet.performance.use-cast-instead-of-select · Severity info · Category performance

A Select lambda that only casts adds an unnecessary delegate invocation; Cast<T>() does it directly.

Incorrect

var strings = objects
    .Select(o => (string)o)
    .ToList();

Correct

var strings = objects
    .Cast<string>()
    .ToList();

Fix

Use Cast<T>() for type conversion.