MVC4制作网站中如何开发更新栏目

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

/// 
    /// 栏目详细资料    /// 
    ///     ///     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("
栏目已经删除
"), Solution = Server.UrlEncode("
返回栏目栏目管理
") };        return RedirectToAction("ManageError", "Prompt", _e);      }      ModuleRepository _moduleRsy = new ModuleRepository();      var _modules = _moduleRsy.List(true);      List _slimodule = new List(_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";}
  
    
      栏目信息    
    @using (Html.BeginForm("ManageUpdate","Category"))    {      @Html.ValidationSummary(true)      
        
详细资料
        
          @Html.HiddenFor(model => model.CategoryId)          
            
              @Html.LabelFor(model => model.CategoryId)            
            
              @Html.DisplayTextFor(model => model.CategoryId)            
          
          
            
              @Html.LabelFor(model => model.Name)            
            
              @Html.EditorFor(model => model.Name)              @Html.ValidationMessageFor(model => model.Name)            
          
          
            
              @Html.LabelFor(model => model.ParentId)            
            
              @Html.TextBoxFor(model => model.ParentId, new { @class = "easyui-combotree", data_options = "url:'" + Url.Action("JsonTreeParent", "Category") + "'" })              @Html.ValidationMessageFor(model => model.ParentId)            
          
          
            
              @Html.LabelFor(model => model.Type)            
            
              @Html.DropDownList("Type")              @Html.ValidationMessageFor(model => model.Type)            
          
          
            
              @Html.LabelFor(model => model.Model)            
            
              @Html.DropDownList("Model")              @Html.ValidationMessageFor(model => model.Model)            
          
          
            
              @Html.LabelFor(model => model.CategoryView)            
            
              @Html.EditorFor(model => model.CategoryView)              @Html.ValidationMessageFor(model => model.CategoryView)            
          
          
            
              @Html.LabelFor(model => model.ContentView)            
            
              @Html.EditorFor(model => model.ContentView)              @Html.ValidationMessageFor(model => model.ContentView)            
          
          
            
              @Html.LabelFor(model => model.Navigation)            
            
              @Html.EditorFor(model => model.Navigation)              @Html.ValidationMessageFor(model => model.Navigation)            
          
          
            
              @Html.LabelFor(model => model.Order)            
            
              @Html.EditorFor(model => model.Order)              @Html.ValidationMessageFor(model => model.Order)            
          
          
            
                          
            
                          
                      
        
      
    }  
  
  @Html.Action("ManagePartialTree", "Category")
@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

/// 
    /// 修改栏目信息    /// 
    ///     ///     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("
返回栏目详细资料页面，修改信息后重新操作
联系网站管理员
") };        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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