MVC4制作网站教程第四章浏览栏目4.2

来源：懂视网责编：小采时间：2020-11-27 22:36:33

MVC4制作网站教程第四章浏览栏目4.2

MVC4制作网站教程第四章浏览栏目4.2:序一、用户二、用户组三、栏目 3.1添加栏目 3.2浏览栏目浏览栏目这块做个一个树形列表，添加栏目的左侧部分只写了句左侧列表就是指这个树形列表，等我们写完替换一下就可以了。先在【CategoryController】里面添加[ManagePartialTre

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导读MVC4制作网站教程第四章浏览栏目4.2:序一、用户二、用户组三、栏目 3.1添加栏目 3.2浏览栏目浏览栏目这块做个一个树形列表，添加栏目的左侧部分只写了句左侧列表就是指这个树形列表，等我们写完替换一下就可以了。先在【CategoryController】里面添加[ManagePartialTre

序

一、用户

二、用户组

三、栏目

3.1添加栏目

3.2浏览栏目

浏览栏目这块做个一个树形列表，添加栏目的左侧部分只写了句“左侧列表”就是指这个树形列表，等我们写完替换一下就可以了。

先在【CategoryController】里面添加[ManagePartialTree]action，这里的Partial用来说明是分部视图

/// <summary>
 /// 栏目列表局部树视图
 /// </summary>
 /// <returns></returns>
 [AdminAuthorize]
 public ActionResult ManagePartialTree()
 {
 return View();
 }

右键添加分部视图ManagePartialTree.cshtml。分部视图里用easyui的tree来显示栏目，使用异步加载，视图代码只有一行。

代码如下:<ul id="ctree" class="easyui-tree" data-options="url:'@Url.Action("ManageTreeChildrenJson", "Category")'"></ul>
这里从[anageTreeChildrenJson]action获取的json数据。

在【CategoryController】添加JsonResult类型的[anageTreeChildrenJson]

/// <summary>
 /// 子栏目树形控件Json数据
 /// </summary>
 /// <param name="id">栏目id</param>
 /// <returns></returns>
 [AdminAuthorize]
 public JsonResult ManageTreeChildrenJson(int id = 0)
 {
 categoryRsy = new CategoryRepository();
 var _children = categoryRsy.Children(id);
 List<Tree> _trees = new List<Tree>(_children.Count());
 foreach(var c in _children)
 {
 Tree _t = new Tree { id = c.CategoryId, text = c.Name};
 switch (c.Type)
 {
 case 0:
 _t.state = "closed";
 _t.iconCls = "icon-general";
 break;
 case 1:
 _t.state = "open";
 _t.iconCls = "icon-page";
 break;
 case 2:
 _t.state = "open";
 _t.iconCls = "icon-link";
 break;
 }
 _trees.Add(_t);
 }
 return Json(_trees, JsonRequestBehavior.AllowGet);
 }

这里默认id=0，根据id查找子栏目，然后遍历子栏目生成树的节点数据。

switch (c.Type) 是根据栏目类型不同来，来设置节点状态并，设置不同的图标。最后以Json类型返回。

修改一下上一节中添加栏目的视图ManageAdd.cshtml，将左侧列表替换成@Html.Action("ManagePartialTree", "Category")。替换后ManageAdd.cshtml

@model Ninesky.Models.Category

@{
 ViewBag.Title = "ManageAdd";
 Layout = "~/Views/Layout/_Manage.cshtml";
}


<div class="workspace">
 <div class="inside">
 <div class="notebar">
 <img alt="" src="~/Skins/Default/Manage/Images/Category.gif" />添加栏目
 </div>
 @using (Html.BeginForm())
 {
 @Html.ValidationSummary(true)

 <fieldset>
 <legend>栏目</legend>
 <ul>
 <li>
 <div class="editor-label">
 @Html.LabelFor(model => model.Type)
 </div>
 <div class="editor-field">
 @Html.DropDownList("Type")
 @Html.ValidationMessageFor(model => model.Type)
 @Html.DisplayDescriptionFor(model => model.Type)
 </div>
 </li>
 <li>
 <div class="editor-label">
 @Html.LabelFor(model => model.Name)
 </div>
 <div class="editor-field">
 @Html.EditorFor(model => model.Name)
 @Html.ValidationMessageFor(model => model.Name)
 @Html.DisplayDescriptionFor(model => model.Name)
 </div>
 </li>
 <li>
 <div class="editor-label">
 @Html.LabelFor(model => model.ParentId)
 </div>
 <div class="editor-field">
 @Html.TextBox("ParentId", 0, new { @class = "easyui-combotree", data_options = "url:'" + Url.Action("JsonTreeParent", "Category") + "'" })
 @Html.ValidationMessageFor(model => model.ParentId)
 @Html.DisplayDescriptionFor(model => model.ParentId)
 </div>
 </li>
 <li id="li_model">
 <div class="editor-label">
 @Html.LabelFor(model => model.Model)
 </div>
 <div class="editor-field">
 @Html.DropDownList("Model")
 @Html.ValidationMessageFor(model => model.Model)
 @Html.DisplayDescriptionFor(model => model.Model)
 </div>
 </li>
 <li id="li_categoryview">
 <div class="editor-label">
 @Html.LabelFor(model => model.CategoryView)
 </div>
 <div class="editor-field">
 @Html.EditorFor(model => model.CategoryView)
 @Html.ValidationMessageFor(model => model.CategoryView)
 @Html.DisplayDescriptionFor(model => model.CategoryView)
 </div>
 </li>
 <li id="li_contentview">
 <div class="editor-label">
 @Html.LabelFor(model => model.ContentView)
 </div>
 <div class="editor-field">
 @Html.EditorFor(model => model.ContentView)
 @Html.ValidationMessageFor(model => model.ContentView)
 @Html.DisplayDescriptionFor(model => model.ContentView)
 </div>
 </li>
 <li id="li_nav">
 <div class="editor-label">
 @Html.LabelFor(model => model.Navigation)
 </div>
 <div class="editor-field">
 @Html.EditorFor(model => model.Navigation)
 @Html.ValidationMessageFor(model => model.Navigation)
 @Html.DisplayDescriptionFor(model => model.Navigation)
 </div>
 </li>
 <li>
 <div class="editor-label">
 @Html.LabelFor(model => model.Order)
 </div>
 <div class="editor-field">
 @Html.EditorFor(model => model.Order, new { value = 0 })
 @Html.ValidationMessageFor(model => model.Order)
 @Html.DisplayDescriptionFor(model => model.Order)
 </div>
 </li>
 <li>
 <div class="editor-label">
 </div>
 <div class="editor-field">
 <input type="submit" value="添加" />
 </div>
 </li>
 </ul>
 </fieldset>
 }
 </div>
</div>
<div class="left">
 <div class="top"></div>
 @Html.Action("ManagePartialTree", "Category")
</div>
<div class="split"></div>
<div class="clear"></div>
<script type="text/javascript">
 Details();
 $("#Type").change(function () {
 Details();
 });
 function Details() {
 var v = $("#Type").val();
 if (v == "0") {
 $("#li_model").show();
 $("#li_categoryview").show();
 $("#li_contentview").show();
 $("#li_nav").hide();
 }
 else if (v == "1") {
 $("#li_model").hide();
 $("#li_categoryview").show();
 $("#li_contentview").hide();
 $("#li_nav").hide();
 }
 else if (v == "2") {
 $("#li_model").hide();
 $("#li_categoryview").hide();
 $("#li_contentview").hide();
 $("#li_nav").show();
 }
 }
</script>
@section Scripts {
 @Styles.Render("~/EasyUi/icon")
 @Scripts.Render("~/bundles/EasyUi")
 @Scripts.Render("~/bundles/jqueryval")
}

添加一个单页类型节点，在添加一个链接类型节点看一下

点一下栏目树前的小箭头能够显示和关闭下级栏目。但点栏目名称没什么反应，我希望的是点栏目名称能够跳转到栏目详细信息页面~/Category/ManageDetails/id，现在用js实现。打开ManagePartialTree.cshtml，在下面添加脚本。

<script type="text/javascript">
 using("tree", function () {
 $("#ctree").tree({
 onClick: function (node) {
 top.location ="@Url.Action("ManageDetails", "Category")/"+node.id;
 }
 });
 });
</script>

完工。