private string SaveFileAs(FaTabStripItem f)
 {
     using (var sfd = new SaveFileDialog {
         Title = string.Format(@"Select the filename to save {0} as...", f.Title)
     })
     {
         sfd.Filter      = FileFilters.GetFilters();
         sfd.FileName    = Path.GetFileNameWithoutExtension(f.Title);
         sfd.FilterIndex = FileFilters.GetExtensionIndex(string.Format("*{0}", Path.GetExtension(f.Title)));
         if (sfd.ShowDialog(_tabStrip.Parent) == DialogResult.Cancel)
         {
             return(string.Empty);
         }
         var fileName = sfd.FileName;
         f.Tag = fileName;
         System.Diagnostics.Debug.Print(fileName);
         return(fileName);
     }
 }