如何从SharePoint站点的命令行打开SharePoint设计器

I'm working on a Visual Studio Add-in to edit files in SharePoint. From this Add-in I would like to be able to open SharePoint Designer with a specific SharePoint site. Finding the application is no problem, its folder is in registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office.0\SharePoint Designer\InstallRoot, and the application is called SPDesign.exe.I'm working on a Visual Studio Add-in to edit f