C＃中的正则表达式正则表达式

Question

We have implemented the invocation of brill tagger from our c# code. We just neede to know what is the correct Regex regular expression for eliminating all from a string, but jst keep az,AZ, full stop and comma. We tried [^a-zA-Z\\.\\,] on the online regular expression tester and it is giving the correct result, but when implemented in C#, it is not working properly. We also tried several other combinations but we are not getting the correct result.

This is the format in which we are writing:

strFileContent = Regex.Replace(strFileContent, @"[^a-zA-Z\.\,]", "");

but we are not getting the desired output. what is wrong??

Answer 1

Regex.Replace(yourString, @"[^az\\.\\,]", string.Empty, RegexOptions.IgnoreCase)

EDIT: I can't see anything wrong with what you are doing, my answer is exactly the same. I tested both in LINQPad and they both return the same result.