Replace Bad words using Regex

Question

I am trying to create a bad word filter method that I can call before every insert and update to check the string for any bad words and replace with \"[Censored]\".

Answer 1

Although I'm a big fan of Regex, I think it won't help you here. You should fetch your bad word into a string List or string Array and use System.String.Replace on your incoming message.

Maybe better, use System.String.Split and .Join methods:

string mayContainBadWords = "... bla bla ...";
string[] badWords = new string[]{"bad", "worse", "worst"};

string[] temp = string.Split(badWords, StringSplitOptions.RemoveEmptyEntries);
string cleanString = string.Join("[Censored]", temp);

In the sample, mayContainBadWords is the string you want to check; badWords is a string array, you load from your bad word sql table and cleanString is your result.