Regular Expressions are a very powerful tool set than can help greatly reduce complexity when working with string manipulations. However, they can also be that thorn in a developers side as it is very hard to debug regular expressions and at times that expression that "worked fine here" doesn't work so well with the language of choice.
To help .NET developers we have developed the below .NET based Regular Expression tester. Using this tool you can configure the Regular Expression matching and set samples for expressions as well as text to match. The results of your match will be bold in the output below..