Specify Ports after Upgrading LightSwitch HTML Clients to VS2013

Specify Ports after Upgrading LightSwitch Clients to VS2013!

When upgrading LightSwitch applications to Visual Studio 2013 you will have a smoother experience if you heed the advice in this article…

This article is part of a series of posts from Xpert360 Development Team to address real world scenarios and problems faced when designing, creating and implementing Visual Studio LightSwitch applications. Brought to you by the original and genuine Power Tools for Visual Studio LightSwitch!

I planned to upgrade a LightSwitch HTML client application from VS2012 to VS2013 RC. After the upgrade I would be running the two versions of the project side by side to test and compare.

I also wanted to try some new VS2013 features and work through implementing some “Drag and Drop with LightSwitch HTML Client” as described by Rohit Agrawal on the Visual Studio LightSwitch Team Blog. Go read the post if you have not yet done so.

LightSwitch HTML Client drag and drop

LightSwitch HTML Client drag and drop

So here I create a standard View Details Screen for the Locations entity. I wired-up some views of the Tables entity and added the drag and drop code. Some more work to do, but as this is VS2012 and the new ‘.refresh‘ method is in VS2013 I upgraded a copy of the project.

The upgrade process took a minute and the project rebuild worked. The application runs fine, still a bit of work to do.

VS2013 LightSwitch HTML Client drag and drop

VS2013 LightSwitch HTML Client drag and drop

We can see that not surprising some of the styling changed and some customizations need attention. Now the Refresh button on the command bar works.

Then it started to go horribly wrong as the two Visual Studio projects conflicted and I found myself running the project in VS2013 debugger and debugging the VS2012 JavaScript!

Web Project Properties

Web Project Properties in the project file (.csproj)

I resolved the conflict by changing the Development Server Port and the port for the Web site in IIS Express. Then I continued testing side by side with no problems.

IIS Express Running Apps -VS2012/13

IIS Express Running Apps -VS2012/13

All is well here in IIS Express with the two projects running and being concurrently debugged.


This particular feature affects the Rich Client Silverlight clients and the HTML Mobile Client varieties. As we are often copying projects and switching between versions of Visual Studio this is the next step after upgrading and rebuilding a project.


Company information: Xpert360 Ltd, founded in 2009, is an Independent Software Vendor and Custom Solution Provider based in the United Kingdom.

Xpert360 Lightning” and “AIDE for LightSwitch” are trademarks of Xpert360 Ltd, copyright 2012 – 2013.


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