Hide visual elements in pdfNavigoator bar - get filename of document open in pdfviewer

            //1.Hide the open file button
            this.radPdfViewerNavigator1.OpenButton.Visibility = ElementVisibility.Collapsed;

            //3. page number
            int pageIndex = int.Parse(this.radPdfViewerNavigator1.CurrentPageTextBox.Text);

            //4. total pages
            int totalPages = this.radPdfViewerNavigator1.AssociatedViewer.Document.Pages.Count;

            OpenFileDialog openFileDialog = new OpenFileDialog();
            openFileDialog.Filter = "PDF Files|*.pdf";
            openFileDialog.Title = "Select a PDF File";
            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                this.pdfViewerElement.LoadDocument(openFileDialog.FileName);
                this.UpdatePageCount();
            }

        public void LoadDocument(string path)
        {
            if (this.documentLoader != null)
            {                
                while (this.documentLoader.IsBusy)
                {
                    System.Threading.Thread.Sleep(50);
                    System.Windows.Forms.Application.DoEvents();
                }
            }

            this.UnloadDocument();
            this.stream = new MemoryStream(File.ReadAllBytes(path));
            this.LoadDocument(this.stream);
            this.fileName = Path.GetFileName(path);
        }