public ActionResult Create([Bind(Include = "Id,Text,ParentID")] TreeView treeView, int?id) { if (ModelState.IsValid) { db.Trees.Add(treeView); db.SaveChanges(); if (id != null) { var tree = db.Trees.Find(id); if (tree != null) { treeView.Parent = tree; } else { treeView.Parent = null; } } else { treeView.Parent = null; } db.SaveChanges(); return(RedirectToAction("Index")); } ViewBag.ParentID = new SelectList(db.Trees, "Id", "Text", treeView.ParentID); return(View(treeView)); }
public TreeViewController(TreeViewContext context) { _context = context; if (_context.TreeNodes.Count() == 0) { _context.TreeNodes.AddRange(defaultTreeViewState); _context.SaveChanges(); } }
public IActionResult GetById(string id) { if (id == "0") { _context.RemoveRange(_context.TreeNodes); _context.SaveChanges(); _context.TreeNodes.AddRange(defaultTreeViewState); _context.SaveChanges(); return(new NoContentResult()); } else { var foundNode = _context.TreeNodes.FirstOrDefault(n => n.Id == id); if (foundNode == null) { return(NotFound()); } return(new ObjectResult(foundNode)); } }