C Sharp (C#) - Strings and StringBuilder
You want to check if a user input string matches a stored password ignoring case and culture differences. Which is the best approach?
You want to check if a user input string matches a stored password ignoring case and culture differences. Which is the best approach?
hard🚀 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Identify best practice for secure string comparison
Using string.Equals with OrdinalIgnoreCase is efficient and culture-invariant.Step 2: Evaluate other options
input.ToLower() == password.ToLower() creates new strings and depends on culture. string.Compare(input, password, true) == 0 uses Compare with ignoreCase true but less explicit. input.Equals(password) is case-sensitive.Final Answer:
string.Equals(input, password, StringComparison.OrdinalIgnoreCase) -> Option BQuick Check:
Use OrdinalIgnoreCase for culture-invariant case-insensitive compare [OK]
Quick Trick: Use string.Equals with OrdinalIgnoreCase for password checks [OK]
Common Mistakes:
MISTAKES- Using ToLower which depends on culture
- Using case-sensitive Equals
- Assuming Compare is better than Equals
Master "Strings and StringBuilder" in C Sharp (C#)
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore C Sharp (C#) Quizzes