How can I add a new project to the current solution using Community.VisualStudio.Toolkit ?

[CplMulder]

Hi there,

Thanks for the awesome toolkit...

I have an extension I wrote ages ago (still in VB haha) that I am porting to VS2019 and above.... I have almost everything working using the Community.VisualStudio.Toolkit but one thing I still cannot do that I used to be able to do with the DTE2 interface is to add a New project to the current solution (you used to point it to a template file)

Does anyone know if there any way to do this using the toolkit?

[ErikEJ]

What did you do before?

[CplMulder]

Using the EnvDTE/EnvDTE80 namespace and the DTE2 object had Solution2 property for the current solution on which you could call .AddFromTemplate(templatepath, projectpath, projectname)

[CplMulder]

... and you used to get the path by calling something like Solution2.GetProjectTemplate(String.Format("{0}.zip", projectType), projectLanguage)

[reduckted]

Based on how a solution folder is added here:

Community.VisualStudio.Toolkit/src/toolkit/Community.VisualStudio.Toolkit.Shared/Solution/Solution.cs

Lines 30 to 34 in 9c32305

	IVsSolution sol = await VS.Services.GetSolutionAsync();
	int hr = sol.CreateProject(ref guid, null, null, name, 0, ref iidProject, out IntPtr ptr);
	if (hr == VSConstants.S_OK && ptr != IntPtr.Zero)

I suspect that at least part of the answer is to use the IVsSolution.CreateProject method.

Based on that documentation, I think you'd want to call it something like this to create a project from a template:

Guid guidNull = default;
Guid iidProject = typeof(IVsHierarchy).GUID;

solution.CreateProject(
    rguidProjectType: ref guidNull,
    lpszMoniker: pathToTemplate, 
    lpszLocation: pathToNewProjectDirectory, 
    lpszName: newProjectName, 
    grfCreateFlags: __VSCREATEPROJFLAGS.CPF_CLONEFILE,
    iidProject: typeof(IVsHierarchy).GUID,
    ppProject: out IntPtr projectPtr
);

Where you're supposed to get the project template path from, I have no idea. 🤷‍♂️

There's also seems to be a few other methods to add projects that you might have some luck with (I haven't tried any of them though):

• IVsSolution2.CreateProject (looks identical to IVsSolution.CreateProject)
• IVsSolution3.CreateNewProjectViaDlgEx
• IVsSolution6.AddNewProjectFromTemplate
• IVsSolution6.AddExistingProject

[CplMulder]

Thanks @reduckted - I will hack about with those and see what I come up with... appreciated.