Microsoft.VisualStudio.Project.NestedProjectNode.SaveItem C# (CSharp) Method

        public override int SaveItem(VSSAVEFLAGS dwSave, string silentSaveAsName, uint itemid, IntPtr punkDocData, out int pfCancelled)
        {
            // Don't ignore/unignore file changes
            // Use Advise/Unadvise to work around rename situations
            try
            {
                this.StopObservingNestedProjectFile();
                Debug.Assert(this.nestedHierarchy != null, "The nested hierarchy object must be created before calling this method");
                Debug.Assert(punkDocData != IntPtr.Zero, "docData intptr was zero");

                // Get an IPersistFileFormat object from docData object (we don't call release on punkDocData since did not increment its ref count)
                IPersistFileFormat persistFileFormat = Marshal.GetTypedObjectForIUnknown(punkDocData, typeof(IPersistFileFormat)) as IPersistFileFormat;
                Debug.Assert(persistFileFormat != null, "The docData object does not implement the IPersistFileFormat interface");

                IVsUIShell uiShell = this.GetService(typeof(SVsUIShell)) as IVsUIShell;
                string newName;
                ErrorHandler.ThrowOnFailure(uiShell.SaveDocDataToFile(dwSave, persistFileFormat, silentSaveAsName, out newName, out pfCancelled));

                // When supported do a rename of the nested project here
            }
            finally
            {
                // Succeeded or not we must hook to the file change events
                // Don't ignore/unignore file changes
                // Use Advise/Unadvise to work around rename situations
                this.ObserveNestedProjectFile();
            }

            return VSConstants.S_OK;
        }