Array Visualizer


Array Visualizer is a free, open source extension for visual studio. It is designed to display arrays (Jagged and up to 4D) while debugging an application.

(22) Review
Visual Studio
2013, 2012, 2010
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by Serghey A | January 19 2015

Thank you for a great tool.

There is one feature which, in my opinion, is missing, Every time when I enter in debug mode and press F10, visualizer loses the array I have selected. So, every time I have to select it again, in order to visualize it.

by lucysome | July 02 2014

<a href="">.net c# data matrix generator free</a>

by Farukh Sharipov | June 16 2014

Visual Studio 2013 support?

by G.Vernier | December 19 2013

Good, but I'm working with large arrays, like [1024,1024], to generate textures and the extension is quickly unstable with arrays larger than 10 000 entries.

by sammy1188 | July 07 2013

Excellent work, just what I wanted!!

by maurontin | June 05 2013

I have not managed to install it yet. I get a message form Visual Studio Extension Installer that "This extension is not installable on any currently installed products".
I have a registered copy of Visual Studio 2010 Express, full rights and access to my computer etc.
Any ideas what might be wrong here? I'm on windows 7.
Looking forward to your answer.

Amir Liberman June 05 2013
| Edit |

This is a limitation of the express edition. You can read more about it at

by A.Turner | May 28 2013

Amazingly helpful!

by kakkoii | March 04 2013

Great little utility! Thanks!

by E-Masque | March 04 2013

by Bassam Alsaidi | March 01 2013

Very useful tool to have. I love the charting support as you can quickly get an overview about your data using the built in charts. Well done!

by A Daniel | February 28 2013

Awesome tool, runs and works well for me.

It's easy to do a quick check on arrays, also its very pretty visual tool. I am taking my kids through learning programming, and this couldn't be cooler as I am explaining arrays.

by G. Quiroga | February 27 2013

A handy tool for visualizing arrays with four dimensions.

by Binori | October 17 2012

by AAKoken | September 10 2012

by artmasa | September 06 2012

Not working for me

by DarkAngel1004 | August 26 2012

Doesn't function with my german version of Visual Studio 2010 Ultimate.
Have the arrays to be named with "array" to be found?
Have the arrays to be integer arrays to be found?
I didn't find a documentation so my questions are not answered.

Amir Liberman August 26 2012
| Edit |

1) No, arrays can be called anything not just array to be “found”
2) Yes it does support non integer arrays. Did you look at the last sample?
3) I did not test it on each and every environment/language combination known to mankind, I did provide the source code so feel free to look at it and help making it a better free add-on.
4) While I understand your disappointment/frustration, Q/A is the appropriate place for questions…

by Omar Gameel Salem | July 30 2012

Amazing, debugging functions with manipulate multidimensional arrays can be a drag, and this is just the tool i was looking forward.

by Debru Aklil | June 20 2012

Very creative and well implemented.

by oaba | May 26 2012

very useful. a nice tool to have. thanks.

by Rajiv Ralhan | May 22 2012

A very useful and well thought out extension. Good Job.

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  • Problems with Chart
    1 Posts | Last post January 23, 2015
    • Dowload and install latest version from this site.
      Visual Studio 2013.
      Chart tab disabled for any arrays.
      var bb = new int[4] {2, 8, 4, 3}; 
  • possibility to mix arrays ?
    2 Posts | Last post October 31, 2014
    • Hello,
      I have one array of double representing the X axe and one array of double representing the Y axe. Could you make something out that we could visualize the merge of these 2 arrays?
    • Hi, 
      To merge the two arrays, can you create a temp array (for debug time only) that incorporates the logic of merging them? You can use an open source library I posted on that has a set of extension methods that do just that:
  • Floating point values
    3 Posts | Last post October 30, 2014
    • Although this visualizer works for integer values, it has a lot of problems displaying floating point values. It looks like it just handles the data as integers. Is there any special format to be selected?
    • You can modify how numbers are formatted from the Visualizer window, just change the default 0.## to the precision you need and make the cell wider to allow all the digits to display. 
      The default width of a cell is 60 (pixels), try 90 or 120 and see if it helps.  Also, look at for details.
    • Hello,
      I have an array of double with one value being 0.000032650420860557539
      I have set your formatter to 0.###################### and Cell Width to 200
      But it only shows me 0.0000326504208605575
      On the Autos debug window of VS2013, it shows me correctly the last two values '39'.
      Can you correct this please?
      Thanks for the extension anyway!
  • Graphic Visualization
    6 Posts | Last post April 04, 2014
    • Is it possible to add graphic visualization?
      At least for 1D or 2D matrixes.
      I mean, it would be pleasant to have plot with X-Y data taken from the given array.
    • Vlad, I looked into implementing a graph for array data. The add-on forms are WPF forms and unfortunately WPF does not ship with a chart control. I looked  for a good free control and could not find anything too reliable.  There are a lot of good commercial controls that are rather pricy and because this is a free contribution, I don’t want to pay for a license.  If you know of a free good chart control or a way to get a license from a commercial provider I would be happy to add the feature.
    • Amir, I've got your point.
      Unfortunately for now I don't know much - I've just switched from Eclipse to VS :)
      If I find anything useful/stable/free, I'll let you know.
      Thanks for response!
    • Vlad, 
      I recently found a wonderful chart control from SyncFusion and they have a special open source license! I added it to the extension and it is available for download. Please let me know what are your thoughts.
    • Any news on 2013 version?
    • Hooch,
      Due to a bug in VS 2013 the visualizer will display all values in hex format. The bug is confirmed and apparently fixed but will not be included in the next VS2013 update due to timing.  As soon as it is fixed I will update the tool. The VS2013 issue can be viewed at  
      If you want to try the hex only version, send me an email via and I will reply with the VSIX file 
  • Only C#?
    3 Posts | Last post March 31, 2014
    • How about stating this upfront in the add-in description?  I've installed this for debugging a C++ app only to find that C++ isn't supported...
    • Sorry, this extension does not support C++. it was tested with C#, F# and VB. 
    • Why not state that it doesn't support c++ in the description. I was using VS2013 and installed VS2012 to try this extension, then i discovered that it does not support c++!! what waste of time
  • Version for vs2013
    4 Posts | Last post January 21, 2014
    • Will there be a version for the visual studio 2013?
    • Yes. Coming soon.
    • I checked it on VS 2012 and it is a really nice piece of work. Thank you and plz let us know when VS2013 will be available.
    • I have it ready for VS 2013 but for what I suspect is a bug, all integer values are showing as hex, regardless of user preference. It is not intuitive and I rather wait for that issue to be resolved.
      I reported that issue on  still waiting for a resolution. If you will, please vote on it, maybe it will expedite the response.  
  • Generic lists
    2 Posts | Last post May 28, 2013
    • Will it be possible to add support to generic lists?
      Or to classes that implements IList?
    • Thank you for the kind review.
      How will adding support for IList differ from the VS IDE built-in display of variables content?
  • Visualizing 1D arrays as 2D, 3D, ...
    2 Posts | Last post May 24, 2012
    • Would it be possible to view one-dimensional arrays (with the proper dimensions) as 2D, 3D or 4D arrays?
      Example: With that feature, you could view a int[9] (or much larger) array as a 3x3 matrix if you can't use int[3,3] instead.
      What do you think?
    • Mario, the reason I did not include a one dimension viewer is that VS does a good job showing lists and single dimension arrays out of the box.  Showing a single dimension array as multi-diminution array is an interesting idea. In the meantime you can use the LinqLib library to transform your array to a multi dimension array using the ToArray(X, Y) extension.
      In the immediate window type:
      var temp = MyArray.ToArray(3, 3);
      MyArray can be a single dimension array, multi-dimension array, or any type that implements IEnumerable.
      switch over to the visualizer window and you will see it (prefixed with a $ sign)…
      The LinqLib library is an open source project and you can find it at:
  • Languages support
    3 Posts | Last post May 17, 2012
    • Only C# is supported (i tried VB.NET and C++ and it didn't find array variables)?
      What array types are supported?
              Dim a As Integer(,)
              ReDim a(10, 10)
              For i = 1 To 10
                  For j = 1 To 10
                      a(i, j) = 1
    • Currently Only C# is supported. I am working on support for VB version.  I mentioned it at the bottom of the description section; I'll move that disclaimer to the top. 
    • VB is now supported
  • Screenshot
    3 Posts | Last post May 13, 2012
    • Looks great, but all the screenshots under description look 2D to me...
    • It is very strange; I get three 4D images and one 2D image on my phone and the proper display (one of each) on my desktop browser.
      Thank you for pointing this out, I'll look into it.
    • Can you check if it is better now?