Hi all.

This one is for all you guys who are tired of pressing F5 over and over in Visual studio just to see if you got the Regular expression right.

I know I got tired of it and that’s how i found this tool.


Expresso the “Visual Studio of Regular Expression”

It’s a great tool that will make your life much easier, and the best thing is that it is free!!

You can Download it here:

After you install it and run check the help section, there’s a very useful tutorial there.basically your screen is split into four:

  • Top left corner is where you type in the pattern you are looking for.
  • Top right is the analyzer which compiles the pattern on the left as you type it.
  • Bottom left is the actual text you are parsing and
  • Bottom right are the matches your pattern turned out.

In order to check for matches you just have to click “Run Mach” which is located just above the top left window. Check out this tutorial about How to Use Regular Expression on Expresso to check how it works.

The most important thing is that after you are satisfied with the results click on Tools->View Code and Viola, on the bottom right you get the actual C# code for your application

Expresso Regular Expressions Tool

Comment if you have any questionsEnjoy


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3 Responses to “Expresso – a Great Regular Expression Tool”

  1. Hugh Brown

    Said on May 31, 2008 :

    The screen shot above is hopelessly small. It’s really not very informative at that size. How about making it clickable to a full size view?

  2. Chris

    Said on October 21, 2008 :

    I’ve been using Expresso forever. It’s a great tool to build and test regular expressions, even having an option to generate the C#/VB.NET syntax. If you have a need to create/test regular expressions I can’t think of a better tool!

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