Multiple startup projects in Visual Studio 2010
February 8, 2011 | In Development |If you want to debug more than one of the projects in your solution in Visual Studio 2010, you can set multiple startup projects. Obviously this does not apply to projects such as class libraries, which will be loaded as per your single startup project, but if you have if you have multiple independent projects, say a WPF project and a web service project, then this can be useful.
The option is available from the right-click menu on the Solution:

Which opens a dialogue allowing you to pick which projects to start: