I have one .NET UI project and another managed C++ projects.
Unless and until I build C++ projects; .NET UI project keep showing the build errors all the time. This simply clutters the Error Window. Isn’t there any option which will allow to manipulate what could be shown in Error Window?
Most probably there is no dependencies set up for the projects in your solution, or dependencies are set up incorrectly.
You probably should make UI project dependent from your other projects. This way, the UI project will be built after other projects.
How to: Create and Remove Project Dependencies