Microsoft.VisualStudio.Project.FolderNode.SetEditLabel C# (CSharp) Method

        public override int SetEditLabel(string label)
        {
            if(String.Equals(Path.GetFileName(this.Url.TrimEnd('\\')), label, StringComparison.Ordinal))
            {
                // Label matches current Name
                return VSConstants.S_OK;
            }

            string newPath = Path.Combine(new DirectoryInfo(this.Url).Parent.FullName, label);

            // Verify that No Directory/file already exists with the new name among current children
            for(HierarchyNode n = Parent.FirstChild; n != null; n = n.NextSibling)
            {
                if(n != this && String.Equals(n.Caption, label, StringComparison.OrdinalIgnoreCase))
                {
                    return ShowFileOrFolderAlreadExistsErrorMessage(newPath);
                }
            }

            // Verify that No Directory/file already exists with the new name on disk
            if(Directory.Exists(newPath) || File.Exists(newPath))
            {
                return ShowFileOrFolderAlreadExistsErrorMessage(newPath);
            }

            try
            {
                RenameFolder(label);

                //Refresh the properties in the properties window
                IVsUIShell shell = this.ProjectManager.GetService(typeof(SVsUIShell)) as IVsUIShell;
                Debug.Assert(shell != null, "Could not get the ui shell from the project");
                ErrorHandler.ThrowOnFailure(shell.RefreshPropertyBrowser(0));

                // Notify the listeners that the name of this folder is changed. This will
                // also force a refresh of the SolutionExplorer's node.
                this.OnPropertyChanged(this, (int)__VSHPROPID.VSHPROPID_Caption, 0);
            }
            catch(Exception e)
            {
                throw new InvalidOperationException(String.Format(CultureInfo.CurrentCulture, SR.GetString(SR.RenameFolder, CultureInfo.CurrentUICulture), e.Message));
            }
            return VSConstants.S_OK;
        }