public ActionResult ContentSnippetHistory(ContentSnippetHistoryModel model) {
ModelState.Clear();
List<Guid> lstDel = model.History.DataSource.Where(x => x.Selected).Select(x => x.ContentSnippetID).ToList();
foreach (Guid delID in lstDel) {
ContentSnippet.GetVersion(delID).DeleteThisVersion();
}
if (lstDel.Any()) {
SetSaved();
}
return RedirectToAction("ContentSnippetHistory", new { @id = model.Item.Root_ContentSnippetID });
}