I just installed Visual Micro. Here are all my versions:

Visual Micro latest
Visual Studio 2010 10.0.40219.1 SP 1Rel
.NET Framework 4.5.51209 SP 1Rel
Arduino IDE 1.0.6
Windows 7 v64 Professional
Arduino Mega 2560 R3

Here is my problem: I have yet to get Visual Micro to upload the sketch build to the Arduino board, no matter what I do. 

Worse, the only way I can get the sketch to compile is by right clicking on the project in the Solution Explorer window and selecting one of the "Project Only" build options.

I should mention that this is a multi-project solution, with the "central" project being a .NET forms application. If I right click on the Arduino project and select "Set as StartUp project", then all of the various build buttons in VS work as advertised, but ONLY the Arduino sketch is built - all of the other projects in the solution are left untouched. If I right click on the central Forms project and select "Set as StartUp Project", then ALL of the other projects in the solution are built EXCEPT the Arduino sketch. Regardless, the sketch has yet to be uploaded by Visual Micro to the Arduino mega board.

I should add that the sketch compiles successfully and uploads successfully using the Arduino 1.0.6 IDE. No problems there. I can't use the latest Arduino IDE (1.6.x) because the original sketch was written by a third party (I'm only making modifications) and the third party warns that their code won't compile under the 1.6.x IDE (which it doesn't)

I haven't bought Visual Micro yet, I'm running the trial period.  Does that make a difference? However, unless I can get it working as advertised, I won't be buying the product. (Are you folks at VisualMico listening?)

Have I missed something obvious? Thanks...

Edit: Some confusion

1) The Visual Micro build and upload commands upload the currently active arduino project.
2) The Visual Studio "build and upload" commands upload the "Startup Project". So if you are using the Visual Studio F5 or debug start then it will only ever upload the Startup project. In this case make Visual Micro the Startup Project or use the Visual Micro tool bar to upload.
3) Visual Micro also allows you to use the Visual Studio 'Build>Project Only'
4) Visual Studio can only debug one project at a time.


What other combination would you require?

Sorry but it seems to me that this is not an error but your lack of understanding of how things work. You haven't been clear about what magic combination you want to work. It sounds like you want to build and upload Arduino at the same as building and possible starting a window project which would be ridiculous so I must have missed the point.