MVC4制作网站中如何更新栏目，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。
一、用户
二、用户组
三、栏目
3.1添加栏目
3.2浏览栏目
3.3更新栏目
在树形列表里面点击栏目名称后跳转到详细信息页面~/Category/ManageDetails/id。在详细页面里点修改，来完成栏目资料修改。
先打开【CategoryController】添加[ManageDetails(int id)]action
/// <summary>
/// 栏目详细资料
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public ActionResult ManageDetails(int id)
{
categoryRsy = new CategoryRepository();
var _node = categoryRsy.Find(id);
if (_node == null)
{
Error _e = new Error { Title = "栏目不存在", Details = "栏目不存在", Cause = Server.UrlEncode("<li>栏目已经删除</li>"), Solution = Server.UrlEncode("<li>返回<a href='" + Url.Action("Manage", "Cayegory") + "'>栏目栏目管理</a></li>") };
return RedirectToAction("ManageError", "Prompt", _e);
}
ModuleRepository _moduleRsy = new ModuleRepository();
var _modules = _moduleRsy.List(true);
List<SelectListItem> _slimodule = new List<SelectListItem>(_modules.Count());
foreach (Module _module in _modules)
{
if (_node.Model == _module.Model) _slimodule.Add(new SelectListItem { Text = _module.Name, Value = _module.Model, Selected = true });
else _slimodule.Add(new SelectListItem { Text = _module.Name, Value = _module.Model });
}
ViewData.Add("Model", _slimodule);
var _type = TypeSelectList;
_type.SingleOrDefault(t => t.Value == _node.Type.ToString()).Selected = true;
ViewData.Add("Type", _type);
return View(_node);
}代码先是看栏目是否存在，不存在跳转到错误页面，后面是添加"Model“和“Type”的ViewData
右键添加强类型视图ManageDetails.cshtml,内容基本与ManageAdd.cshtml类似
@model Ninesky.Models.Category
@{
ViewBag.Title = "栏目信息";
Layout = "~/Views/Layout/_Manage.cshtml";
}
<div class="workspace">
<div class="inside">
<div class="notebar">
<img alt="" src="~/Skins/Default/Manage/Images/Category.gif" />栏目信息
</div>
@using (Html.BeginForm("ManageUpdate","Category"))
{
@Html.ValidationSummary(true)
<fieldset>
<legend>详细资料</legend>
<ul>
@Html.HiddenFor(model => model.CategoryId)
<li>
<div class="editor-label">
@Html.LabelFor(model => model.CategoryId)
</div>
<div class="editor-field">
@Html.DisplayTextFor(model => model.CategoryId)
</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)
</div>
</li>
<li>
<div class="editor-label">
@Html.LabelFor(model => model.ParentId)
</div>
<div class="editor-field">
@Html.TextBoxFor(model => model.ParentId, new { @class = "easyui-combotree", data_options = "url:'" + Url.Action("JsonTreeParent", "Category") + "'" })
@Html.ValidationMessageFor(model => model.ParentId)
</div>
</li>
<li>
<div class="editor-label">
@Html.LabelFor(model => model.Type)
</div>
<div class="editor-field">
@Html.DropDownList("Type")
@Html.ValidationMessageFor(model => model.Type)
</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)
</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)
</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)
</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)
</div>
</li>
<li>
<div class="editor-label">
@Html.LabelFor(model => model.Order)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Order)
@Html.ValidationMessageFor(model => model.Order)
</div>
</li>
<li>
<div class="editor-label">
<input id="Submit1" type="submit" value="修改" />
</div>
<div class="editor-field">
</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();
$("#Navigation").val("");
}
else if (v == "1") {
$("#li_model").hide();
$("#li_categoryview").show();
$("#li_contentview").hide();
$("#ContentView").val("");
$("#li_nav").hide();
$("#Navigation").val("");
}
else if (v == "2") {
$("#li_model").hide();
$("#li_categoryview").hide();
$("#CategoryView").val("");
$("#li_contentview").hide();
$("#ContentView").val("");
$("#li_nav").show();
}
}
</script>
@section Scripts {
@Styles.Render("~/EasyUi/icon")
@Scripts.Render("~/bundles/EasyUi")
@Scripts.Render("~/bundles/jqueryval")
}注意的是 @using (Html.BeginForm("ManageUpdate","Category"))这句；表示点修改按钮的后是向ManageUpdate提交数据。下面开始做这个action
在【CategoryController】里添加httppost方式的[ManageUpdate]action
/// <summary>
/// 修改栏目信息
/// </summary>
/// <param name="category"></param>
/// <returns></returns>
public ActionResult ManageUpdate(Category category)
{
switch (category.Type)
{
case 0:
category.Navigation = "";
break;
case 1:
category.Model = "";
category.ContentView = "";
category.Navigation = "";
break;
case 2:
category.Model = "";
category.CategoryView = "";
category.ContentView = "";
break;
}
categoryRsy = new CategoryRepository();
if (categoryRsy.Update(category))
{
Notice _n = new Notice { Title = "修改栏目成功", Details = "修改栏目成功！", DwellTime = 5, NavigationName = "栏目详细信息", NavigationUrl = Url.Action("ManageDetails", "Category", new { id = category.CategoryId }) };
return RedirectToAction("ManageNotice", "Prompt", _n);
}
else
{
Error _e = new Error { Title = "修改栏目失败", Details = "在修改栏目信息时，未能保存到数据库", Cause = "系统错误", Solution = Server.UrlEncode("<li>返回<a href='" + Url.Action("ManageDetails", "Category", new { id = category.CategoryId }) + "'>栏目详细资料</a>页面，修改信息后重新操作</li><li>联系网站管理员</li>") };
return RedirectToAction("ManageError", "Prompt", _e);
}
}很简单，首先是判断栏目类型，根据栏目类型清除无关数据，然后将修改保存到数据库。
试一下将“测试栏目”改成“公司简介”
保存成功！
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