𝗦𝘁𝗿𝗶𝗻𝗴 𝗘𝘅𝘁𝗲𝗻𝘀𝗶𝗼𝗻 𝗠𝗲𝘁𝗵𝗼𝗱𝘀 𝗧𝗵𝗮𝘁 𝗦𝗶𝗺𝗽𝗹𝗶𝗳𝗶𝗲𝗱 𝗠𝘆 𝗖𝗼𝗱𝗲 𝗶𝗻 𝗔𝗦𝗣.𝗡𝗘𝗧 𝗖𝗼𝗿𝗲

Have you ever repeated the same string manipulation logic across multiple files? I did—until I learned the power of string extensions.

While building the Employee Performance Review System, I created some helpful string extension methods to make my code cleaner and more reusable.

💡 1. 𝗖𝗼𝗻𝘃𝗲𝗿𝘁 𝘁𝗼 𝗧𝗶𝘁𝗹𝗲 𝗖𝗮𝘀𝗲

🧠 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝗮𝗹𝗶𝘁𝘆: Capitalizes the first letter of each word in a string (e.g., full names).

var name = CultureInfo.CurrentCulture.TextInfo.ToTitleCase(input.ToLower());
// "john doe" → "John Doe"

💡 2. 𝗦𝘁𝗿𝗶𝗽 𝗛𝗧𝗠𝗟 𝗧𝗮𝗴𝘀

🧠 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝗮𝗹𝗶𝘁𝘆: Removes all HTML tags from a string to display plain text.

var plainText = Regex.Replace(input, "<.*?>", string.Empty);
// "

Hello

" → "Hello"

💡 𝟯. 𝗖𝗵𝗲𝗰𝗸 𝗶𝗳 𝗦𝘁𝗿𝗶𝗻𝗴 𝗶𝘀 𝗡𝘂𝗺𝗲𝗿𝗶𝗰

🧠 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝗮𝗹𝗶𝘁𝘆: Validates whether a string contains only digits.

bool isNumeric = input.All(char.IsDigit);
// "12345" → true, "12a45" → false

𝗪𝗵𝘆 𝗜 𝗨𝘀𝗲 𝗦𝘁𝗿𝗶𝗻𝗴 𝗘𝘅𝘁𝗲𝗻𝘀𝗶𝗼𝗻𝘀:

  • Improves 𝗰𝗼𝗱𝗲 𝗿𝗲𝗮𝗱𝗮𝗯𝗶𝗹𝗶𝘁𝘆

  • Promotes 𝗗𝗥𝗬 (𝗗𝗼𝗻'𝘁 𝗥𝗲𝗽𝗲𝗮𝘁 𝗬𝗼𝘂𝗿𝘀𝗲𝗹𝗳) principles

  • Makes unit testing easier

These methods are now part of my helper library and reused across multiple layers — from view models to services.

💬 𝗪𝗵𝗮𝘁 𝘀𝘁𝗿𝗶𝗻𝗴 𝗵𝗲𝗹𝗽𝗲𝗿𝘀 𝗱𝗼 𝘆𝗼𝘂 𝘂𝘀𝗲 𝗼𝗳𝘁𝗲𝗻 𝗶𝗻 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀?