title: Adding a custom property to the VS Project Designer
body: <p>I am creating a Visual Studio extension and have added a custom configuration-specific property to an existing Microsoft Visual C++ (vcxproj) project using the <code>IVsBuildPropertyStorage</code> interface.</p>
  <p>I would like to have that custom property show up in the Project Designer's property pages, as part of a new property page. There is some <a href="https://docs.microsoft.com/en-us/visualstudio/extensibility/adding-and-removing-property-pages?view=vs-2019" rel="nofollow noreferrer">information</a> on how to achieve that for a custom project type but the approach relies on reimplementing the project system which is not appropriate for all situations. Is there a way to extend the Project Designer for an existing project type?</p>