๐ Extension Methods in C#: Power Up Your Code Without Modifying It
Have you ever wanted to add a method to an existing class (like string, DateTime, or even your own types) — without changing its source code? That’s exactly what extension methods in C# are for. ๐ What Is an Extension Method? An extension method lets you "extend" an existing type (class or struct) with new methods , without modifying the type itself . ✅ It feels like you're adding a method to the type ✅ But you're really writing a static method with a special syntax ๐งช Real-Life Example Let’s say you want to capitalize the first letter of a string: ❌ Without Extension: csharp public static class StringUtils { public static string Capitalize(string value) { if (string.IsNullOrEmpty(value)) return value; return char.ToUpper(value[0]) + value.Substring(1); } } Usage: csharp string name = "...