The Web.config transforms are only applied as part of a publish operation. If you wish this to be done as part of an app.config build operation, then you can use the SlowCheetah – XML Transforms Visual Studio plugin: http://visualstudiogallery.msdn.microsoft.com/69023d00-a4f9-4a34-a6cd-7e854ba318b5
I was looking for similar information and didn’t quite find it, so I did some digging around in the .targets files that come with Visual Studio 2010 and MSBuild 4.0. I figured that was the best place to look for the MSBuild task that would perform the transformation. As far as I have been able … Read more
I tried several solutions and here is the simplest I personally found. Dan pointed out in the comments that the original post belongs to Oleg Sych—thanks, Oleg! Here are the instructions: 1. Add an XML file for each configuration to the project. Typically you will have Debug and Release configurations so name your files App.Debug.config … Read more