This is the second part of my Regular Expression overview.  In the first article I discussed the basics of creating Regular Expressions and provided a link to test expression patterns using the .NET Framework RegEx classes.  In this article I will discuss the various actions that can be taken to match values in a string using regular expressions.  I will also discuss how you can implement a SQL CLR UDF to allow regular expression validation from your database to provide a strong level of input validation at the database level.

Many developers have wanted to create an application that runs fully out of the system tray, maybe an application to help you automatically sort files, or something to monitor the clipboard. Many people have implemented these applications and many textbooks provide instruction on how to create an application such as this, however, none of the books I have found show you the most effective way to create the application.