Question

I need to search a Text Box after user input to see if there are any Occurrences of a particular abbreviation.

As an example, I want to see if the user has input one of the following:-

".AB ", "AB." , " AB ", "/AB", ",AB"

What is the cleanest way of doing this please?

Answer 1

An easy way is to use Regular Expressions:

if (Regex.IsMatch(yourTextBox.Text, @"((\.|,|\s)AB(\.|,|\s)"))) {
    // do something
}

Choose a regex that matches the strings you want to detect.