How to add a Solution Folder to an existing Solution Folder with VS 2005 Guidance Automation

If you have an EnvDTE.Project reference to an existing Solution Folder you can add a solution folder like so:

C#

((EnvDTE80.SolutionFolder)root.Object).AddSolutionFolder("solutionFolder");

or VB

DirectCast(root.[Object], EnvDTE80.SolutionFolder).AddSolutionFolder("solutionFolder")

where "root" is the EnvDTE.Project reference to the existing Solution Folder.