Visual T4


Offers IntelliSense, syntax coloring, validation, transformation preview and more for T4 templates

(31) Review
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by ZnG | November 18 2013

I should give 5 star. Clarius developed a great product. I have been using it with VS2010 for more than 2 years. I love it.
The reason I gave 4 star is I need never expired version. I am still using VS2010, didn't upgrade to VS2012.
Because Visual T4 of VS2010 is beta1. So it is expired once a while. I want to pay for a non-expire version, but I couldn't.
It will be much better for Clarius to either publish Visual T4 for VS 2010, or extend the expired date of Beta version to long time, e.g. 180 days.
Thank you.

Very slow. Not sure what is happening in latest version, (LAST UPDATED 5/16/2013)

by Igor Tkachev | August 16 2013

3 days trial? I did not have time for a try :))

by GerbenRampaart | May 16 2013

Works. But gets a bad review for the simple fact it is falsely listed as 'Free'. But is instead a 'Trial'. Listed a 'Trial' probably gets you a lot less downloads so they chose 'Free'.

Sorry, sh*t doesn't fly. One star.

by MSF_LG | May 15 2013

Except for formatting issues, I think this is the best T4 Template out there. Currently, my preview version is expired. I hope they push out an update soon.

by muaddubby | May 02 2013

Good tool, but only gets two points because of this awful indentation bug it has had for ages and continues to be ignored. Press enter on any line to add a new one, and you're automatically indented about 100 chars or so.

Also, pasting text or typing in new text after existing lines sometimes completely reformats the existing sections above and completely messes up their indentations (similar to what happens when adding a new line). This is awful ...

by kornman00 | April 12 2013

1) "Beta" expiration messages. I really don't see the point of this for something that's free and can be updated via the extension manager.
2) No installer for VS2012, supported or not.
3) God awful indentation bug that continues to be ignored. This bug makes using this plugin a nightmare, syntax highlighting or not.

#2 cost you 1 star
#3 cost you 3
#1 would have cost you another star if that were possible.

by WindianZ | March 11 2013

The extension is great but with expire message indentation bug, it loses 2 of my stars. I hope it will be fixed soon.

by Excelsior Charles | February 28 2013

I give it only three stars because I had to manually go in and enable Visual Studio 2012 support. When the developer decide we 2012 developers can play with their tool, then maybe I give them more stars.

For those who wish to use it in VS 2012 now:

1. Download Extension
2. Rename "Clarius.VisualT4.vsix" to ""
3. Extract to temp folder "Clarius.VisualT4.vsix (extracted)"
4. Open "extension.vsixmanifest" with text editor.
5. On line 15, change from 10 to 11 <VisualStudio Version="11.0">
6. Save file
7. Put new .vsixmanifest file back into ""
8. Rename "" to "Clarius.VisualT4.vsix"
9. Install and enjoy :)

by abcjjy | February 16 2013

This extension looks good but messed up my visual studio... I have spent hours to clean it up and make things right.

It secretly disables line number and makes indentation abnormal. Moreover, it touched the compilation settings of my t4 template and caused many curious errors...

If you are working on a school homework or you are just playing with t4, you can try this extension. Don't rely on it when working on sth serious.

by paralaxsd | January 31 2013

The extension is great but would be so much more useful if it hadn't one nasty bug: indentations are screwed up.

Visual T4 puts a large amount of white spaces between the start of a new line and the actual braces. When editing, one routinely has to remove those white spaces for the code to be readable again.

I've tried this on different computers with different Visual studio 2010 installations (English Win 7 and 8, German keyboard layout) and the extension seemed to consistently have these problems.

by Andrew L Arnott | January 06 2013

Better than devart's t4 editor (which didn't give me any Intellisense or syntax highlighting despite their claims).

Just wish it were available for VS2012.

by Mauro Binda | November 08 2012

by KorLibrary | October 24 2012

I'd rate zero stars if I could. This project is absolute crap.

I tried it out in a VB.Net Winforms solution.

It reports tons of errors which are not errors at all, and made working in a template so slow that I had to unass the stupid thing.

My suggestion: Get into another line of work...folding clothes or something.

Clarius Consulting October 24 2012
| Edit |

Visual T4 only supports C# (and NOT VB) as it is stated in the product description and screenshots.
Our suggestion: read the product description.

by Phi10101010 | September 09 2012

When a plugin is labeled as "free", I expect that there is no expiration.
I'm fine with future versions being sold, but if there is an expiration include which causes VS to crash when started, please label it as "trial".

by Juan Zamudio | August 22 2012

it crashes vs2010 when I try to split the window.

by rushfrisby | June 07 2012

This plugin is pure crap. tangible's T4 Editor is much much better. Do a search for that in the gallery and install that one instead.

by Kasto | May 15 2012

Great add-on but the indentation bug makes it unbearable to use. Please fix that bug and I'll reinstall Visual T4 right away.

by Sowen | February 29 2012

cool, the expiration message goes away this time, it finally works again. changed to 4 stars. 5 if the ancient ugly indent problem can get fixed. that issue has been there since last century. i truly hope some day it gets fixed.

by J D | January 20 2012

Intellisense worked great, better than tangible's it seems which treats many things just as "object", but the big problem I had was that it would put new lines way off to the right with a huge indention for no reason at all. Also, it would incorrectly change the types of the .tt files and cause namespace errors. I had to uninstall it because of the indent thing and the errors. Fix those bugs and I'll happily reinstall this.

by Tomasz Kajetan Stańczak | December 07 2011

Do not care the existing bugs. It is pretty useful right now so you should start making money on this. It would motivate you to fix more things for sure.


1 - 20 of 31 Items   
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  • VS2013 Express
    1 Posts | Last post December 12, 2013
    • Hello,
      Does Visual T4 support in VS2013 Express edition??
  • Problem updating to the newest version
    1 Posts | Last post October 01, 2013
    • Hi there 
      Since a few weeks I get the "Preview Version expired" error message. Well, that's no big deal, I thought, just install the newest version and all will be fine... But there the problem starts: where can I get the newest version? The one you offer for download is the same on I've installed! How can I get the newest version?
      Thanks for your help.
  • Expired
    11 Posts | Last post September 23, 2013
    • It always say expired, can you help me please? My version is 1.0.63000.0 on VS2010
    • VS2010 Ultimate.
    • I'm having the same problem.  I hope they push out an update soon.
    • Hi Guys, we are aware of this and working to have a new drop out there as soon as possible. I'll post here more details once it is out. Thanks and sorry for the inconvenience.
    • Hi again, you should be able to upgrade to the latest beta bits now to continue using VisualT4. Please note that we are bundling DevStore with the VisualT4, as we did with Default Browser Switcher and Quick Add Reference. So you will have access to the DevStore within Extension Manager by just installing VisualT4. Thanks.
    • I just installed successfully ;)
    • I get again the expired version message : ( I tried to reinstall it directly from the dev store :( I would not be forced to change extension :( Please Help me.
    • Hi Marco,
      We have just uploaded the latest beta bits v1.0.10 -- please upgrade to that one. Also make sure you read the post we just made about a bug in VS 2010 and certificates as you may need to uninstall your previous version before downloading the latest one.
    • Expired again, uninstall & install again (v2.0) did not work. My .tt file back to plain text. Please help!
    • Hi Mazlan,
      We have just posted version 2.1 bits. Please update your bits and you should be fine. Thanks!
    • Hi!
      We use Visual T4 with visual studio 2010 at my workingplace. But we can't make it work again. We uninstalled Devstore and Visual T4 and tested with version 2.0.1. without success, it still says on Visual Studio startup that it has expired.
      What should we do? This tool is something we use on a daily basis at our work, and is the best I tested out there.
      So where is that version 2.1 bits you are talking about?
      Or what is the solution to this?
      Thanks for a great tool!
  • DevStore -- The Selected Product is not available for sale in Canada
    2 Posts | Last post August 16, 2013
    • ZnG
      Hi, there:
      I am getting following message when trying to install from VS2010.
      "DevStore -- The Selected Product is not available for sale in Canada"
      Not working after I updated from Visual Studio Gallery.
      Thank you.
    • Hi ZnG,
      We have no idea where that error message is coming from. Definitely is not displayed by Visual T4. We have just posted new bits. You may want to try to uninstall first your current bits and try a fresh install.
  • For those who wish to use it in VS 2012 now:
    6 Posts | Last post July 01, 2013
    • 1. Download Extension
      2. Rename "Clarius.VisualT4.vsix" to ""
      3. Extract to temp folder "Clarius.VisualT4.vsix (extracted)"
      4. Open "extension.vsixmanifest" with text editor.
      5. On line 15, change from 10 to 11 <VisualStudio Version="11.0">
      6. Save file
      7. Put new .vsixmanifest file back into ""
      8. Rename "" to "Clarius.VisualT4.vsix"
      9. Install and enjoy :)
    • It works! Thanks for sharing...
      Instead of the change you can add a new section
            <VisualStudio Version="11.0">
      under the old one, so the package works for both versions...
    • Due to the recent changes to the extension (v1.0.7.0) - DevStore was bunled with the VisualT4 - Visual Studio 2012, comes with an error that it cannot load a library - while starting. Then Visual Studio 2012 freezes.
    • George, that is expected because -as we don't officialy support VisualT4 in 2012 yet- VisualT4 for VS 2010 is bundled with the VS2010 compatible version of DevStore. While VisualT4 could be tweaked to work in both VS2010 and VS2012, DevStore can not because the API it uses have changed a lot between the two version of VS. We will be uploading soon a VS 2012 version of VisualT4 which will be bundled with the corresponding VS 2012 version of DevStore and that will work. In fact, we have it ready but will take a day or two to upload here, if you are in a hurry, please contact and we will send it your way now so you don't have to wait. Thanks.
    • Hi,
      Today I got a message that VisualT4 has expired. Last time I had contacted in order to get a version running in VS2012.
      Is there going to be published a version for VS2012? What about VS 2013 Preview?
    • George, we just uploaded new beta bits of VisualT4 for VS 2012 to the DevStore. We are currently testing it under VS 2013 and we plan to release it soon if everything goes well.
  • Upgrading to latest beta bits 1.0.10 - Problem with certificates
    1 Posts | Last post July 01, 2013
    • Hi all, Due to a bug in VS 2010 where it fails to properly detect renewed versions of the same certificate you may get an error while trying to upgrade to the latest beta bits. If this occurs please make sure you follow these steps:
      1) Uninstall VisualT4 1.0.9 and DevStore 1.0.4 or previous
      2) Install VisualT4 1.0.10
      And this time the install should go ok as VS won't have two certificates to compare.
  • Error: VisualT4Editor_b65c7fd4-b19f-4839-ae31-a7f561d7f45c' is not installed to Microsoft Visual Studio 2010 Ultimate.
    1 Posts | Last post June 30, 2013
    • ZnG
      Visual T4 is a great tool, I have been using it for more than a year.
      I am getting following when try to install/update from DevStore and here.
      6/30/2013 10:25:36 AM - Searching for applicable products...
      6/30/2013 10:25:36 AM - Found installed product - Microsoft Visual Studio 2010 Ultimate
      6/30/2013 10:25:36 AM - The extension with ID 'VisualT4Editor_b65c7fd4-b19f-4839-ae31-a7f561d7f45c' is not installed to Microsoft Visual Studio 2010 Ultimate.
      6/30/2013 10:25:36 AM - Found installed product - Microsoft Visual Studio 2010 Express for Windows Phone
      6/30/2013 10:25:40 AM - The following target products have been selected...
      6/30/2013 10:25:40 AM - 	Microsoft Visual Studio 2010 Ultimate
      6/30/2013 10:25:40 AM - 
      6/30/2013 10:25:40 AM - Beginning to install extension to Microsoft Visual Studio 2010 Ultimate...
      6/30/2013 10:25:41 AM - Install Error : Microsoft.VisualStudio.ExtensionManager.NestedExtensionInstallException: The extension 'Clarius.DevStore10' nested within 'VisualT4Editor_b65c7fd4-b19f-4839-ae31-a7f561d7f45c' failed to install.
      DevStore is already installed. ---> Microsoft.VisualStudio.ExtensionManager.AlreadyInstalledException: DevStore is already installed.
         at Microsoft.VisualStudio.ExtensionManager.ExtensionManagerService.CheckIfAlreadyInstalled(IExtension extension, Boolean installingAsNestedExtension, Boolean& olderVersionInstalled)
         at Microsoft.VisualStudio.ExtensionManager.ExtensionManagerService.CheckForInstallBlockers(InstallableExtensionImpl extension, Boolean isNestedExtension, Boolean& olderVersionInstalled)
  • very slow
    5 Posts | Last post May 24, 2013
    • Hello
      Thank you for this editor, it is very helpful for editing T4 templates.
      Unfortunately, I've got a problem with the newest version: since the upgrade to the Visual T4 editor is slow to the point of unusable. Any action (scrolling, select, edit etc.) takes about 30 seconds to complete. During this time one CPU core is completely used by my visual studio process.
      Any idea what this might be or how to work around this issue?
    • Sorry, we just uploaded a build that should fix that. Please give it a try, thanks!
    • I tried the new version and I run into the same problem as before. But as I disabled DevStore the whole thing was working just fine.
      It looks like the problem is (was) not the Visual T4 plug-in itself, but rather the DevStore.
      Thanks for your efforts.
    • Ok, we believe we finally sorted out this mess... we have now another VisualT4 update (1.0.9) and DevStore update (1.0.4) which we tested a lot and it is worked as fast as usual. So as long as you make sure you have at least these versions, everything should work smoothly now. Thanks for your help with this!
    • Yes, this version is working fine regardless of DevStore.
      Thanks for your quick response.
  • Latest update: 1.0.9 - fixes slow perfomance
    1 Posts | Last post May 24, 2013
    • Everyone experienced very slow performance, please make sure you are running at least version 1.0.9. Thanks.
  • Please update to 1.0.8
    1 Posts | Last post May 21, 2013
    • We just released this build to fix an ugly issue with the previous version which caused VS to hang from time to time. Thanks.
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