Chidnode返回count = 0，虽然它有价值？ [英] Chidnode returns count=0 althought it has value ?
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问题描述
大家好我正在使用此代码
Hi all I'm using this code
my category class is
[Serializable]
public class Category
{
[DisplayName("Id")]
public int CategoryId { get; set; }
[Required]
public string Name { get; set; }
public DateTime CreatedDate { get; set; }
public int ParentId { get; set; }
public virtual ICollection<Product> Products { get; set; }
and my TreeViewNodeVM is
public string id { get; set; }
public string text { get; set; }
public IList<TreeViewNodeVM> ChildNode { get; set; }
i将表格i数据库作为类别
i have table i database as Categories
CategoryId Name CreatedDate ParentId
1 category 2014-05-06 19:00:20.107 0
2 Category1 2014-05-06 19:00:20.107 1
3 Category2 2014-05-06 19:00:20.107 1
I am binding my jstree with this table as
我的Categorycontroller代码是
My Categorycontroller code is
public JsonResult GetList(int id = 0)
{
var objList = GetTreeVeiwList();
return Json(objList, JsonRequestBehavior.AllowGet);
}
public List GetTreeVeiwList() {
var rootNode = (from e1 in _CategoriesBusiness.Select()
where e1.ParentId == 0
select new TreeViewNodeVM()
{
id =Convert.ToString(e1.CategoryId),
text = e1.Name
}).ToList();
BuildChildNode(rootNode);
return rootNode;
}
public JsonResult SaveChanges(string ar)
{
var data = new JavaScriptSerializer().Deserialize<string[]>(ar);
Categories objCategories=null;
foreach (var a in data)
{
var ab = a.Split(' ');
objCategories=new Categories();
int tempCategoryId;
if (int.TryParse(ab[1], out tempCategoryId))
{
objCategories.CategoryId = tempCategoryId;
var objcat=(from cat in _CategoriesBusiness.Select() where cat.CategoryId==tempCategoryId select cat).FirstOrDefault();
if (objcat != null)
{
objcat.Name = ab[0].Trim();
int tempParantId;
if (int.TryParse(ab[2], out tempParantId))
{
objcat.ParentId = tempParantId;
}
_CategoriesBusiness.Update(objcat);
}
else
{
objCategories.CategoryId = Convert.ToInt32(ab[1]);
objCategories.Name = ab[0];
int tempParantId1;
if (int.TryParse(ab[2], out tempParantId1))
{
objCategories.ParentId = tempParantId1;
}
_CategoriesBusiness.Create(objCategories);
}
}
else
{
objCategories.Name = ab[0];
int tempParantId1;
if (int.TryParse(ab[2], out tempParantId1))
{
objCategories.ParentId = tempParantId1;
}
_CategoriesBusiness.Create(objCategories);
}
}
return Json(new { },JsonRequestBehavior.AllowGet);
}
private void BuildChildNode(List<TreeViewNodeVM> ListrootNode)
{
foreach (TreeViewNodeVM rootNode in ListrootNode)
{
if (rootNode != null)
{
List<TreeViewNodeVM> chidNode = (from e1 in _CategoriesBusiness.Select()
where e1.ParentId.ToString() == rootNode.id
select new TreeViewNodeVM()
{
id = Convert.ToString(e1.CategoryId),
text = e1.Name
}).ToList<TreeViewNodeVM>();
if (chidNode.Count > 0)
{
BuildChildNode(chidNode);
foreach (var childRootNode in chidNode)
{
rootNode.children.Add(childRootNode);
}
}
}
}
}
and view is:
< href="../../Content/dist/themes/default/style.min.css" rel="stylesheet">
<script src="../../Content/dist/jstree.js">
@model List<Web.ViewModels.TreeModels.TreeViewNodeVM>;
@{
ViewBag.Title = "Index";
}
<h2>
Categories</h2>
<input type="button" id="btnaddFolder" value="Add new folder" onclick="File_Folder()" />
<input type="button" id="btnaddCat" value="Add new Category" onclick="File_create()" />
<input type="button" id="btnSave" value="Save Changes" onclick="SaveChanges()" />
<input type="button" id="btnCancel" value="Cancel" />
<div id="jstree">
</div>
<script>
function SaveChanges() {
debugger
var ar = [];
var i = 0;
var arr = "";
$('#jstree li').each(function () {
debugger
var id = $(this).attr('id');
var text = $(this).find("a:first").text();
if ($(this).parent('ul.jstree-children')) {
var parent = $(this).parent('ul.jstree-children').parent('li').attr('id');
alert(text + " " + id + " " + parent);
var item = text + " " + id + " " + parent;
ar.push(item);
i++;
}
});
arr = JSON.stringify(ar);
//$('#jstree li.jstree-node').each(function () {
// some.push($(this).attr("id"));
// // or
// //some.push(this.id);
//});
debugger;
$.ajax({
type: 'post',
url: "/Category/SaveChanges", data: { ar: arr }, success: function (result) {
$("#div1").html(result);
}
});
}
function AddNewNode()
{
File_create();
}
$(function () {
// 6 create an instance when the DOM is ready
debugger
$("#jstree").jstree({
"core": {
"animation": 0,
"check_callback": true,
"themes": { "stripes": true },
'data': {
'url': function (node) {
debugger
return node.id === '#' ?
'/Category/GetList' : '/Category/GetList1';
},
'data': function (node) {
debugger
return { 'id': node.id };
}
}
},
"contextmenu": {
"items": function ($node) {
var tree = $("#jstree").jstree(true);
return {
"Create": {
//"separator_before": false,
//"separator_after": false,
"label": "Create",
"action": function (data) {
debugger;
File_create();
//var ref = $('#jstree').jstree(true);
//ref.create_node(data);
}
},
"Rename": {
"separator_before": false,
"separator_after": false,
"label": "Rename",
"action": function (obj) {
debugger;
tree.edit($node);
}
},
"Remove": {
"separator_before": false,
"separator_after": false,
"label": "Remove",
"action": function (obj) {
tree.delete_node($node);
}
}
};
}
},
"types": {
"#": {
"max_children": 1,
"max_depth": 4,
"valid_children": ["root"]
},
"root": {
"icon": "/static/3.0.0/assets/images/tree_icon.png",
"valid_children": [],
"name":"Folder"
},
"default": {
"valid_children": ["default", "file"]
},
"file": {
"icon": "glyphicon glyphicon-file",
"valid_children": []
}
},
"plugins": [
"contextmenu", "dnd", "search",
"state", "types", "wholerow"
]
})
});
function File_Folder() {
debugger
var ref = $('#jstree').jstree(true),
sel = ref.get_selected();
if (!sel.length) { return false; }
var number = 1 + Math.floor(Math.random() * 10);
sel = ref.create_node(sel, { "type": "default"});
if (sel) {
ref.edit(sel);
}
}
function File_create() {
debugger
var ref = $('#jstree').jstree(true),
sel = ref.get_selected();
if (!sel.length) { return false; }
sel = ref.create_node(sel, { "type": "file"});
if (sel) {
ref.edit(sel);
}
}
</script>
</pre>
but childnode return count=0
any one can tell me where is the problem
childnode must return category1 , category2 for the parent categories as shown i code that I'm using now
<b>What I have tried:</b>
I don't know what wrong , I need something to try
推荐答案
（' #jstree li'）。 （function（）{
debugger
var id =
('#jstree li').each(function () { debugger var id =
（ this ）。attr（' id'）;
var text =
(this).attr('id'); var text =
（ this ）。find （ a：first）。text（）;
if （
(this).find("a:first").text(); if (
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