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How to Compare Strings in C#: Best Practices
Comparing Strings in C#: Techniques, Performance, and Best Practices By ByteNomads – May 2025 String comparison is one of those deceptively simple tasks in C# that can quickly become complex when you consider culture, case sensitivity, and performance. In this article, we'll explore different methods to compare strings in C#, highlight when to use each one, and look at real-world scenarios — including comparisons for text, numbers as strings, and even enums. 1. Using == and .Equals() These are the most common methods for comparing strings. string a = "hello"; string b = "HELLO"; Console.WriteLine(a == b); // False (case-sensitive) Console.WriteLine(a.Equals(b)); // False (also case-sensitive) When to use: When you want a simple, case-sensitive, culture-invariant comparison Comparing hard-coded values (e.g., user roles or status) 2. Using String.Equals() with options string a = "straße"; string b = ...
