MVC4制作网站教程第四章 更新栏目4.3

序
 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 

上次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！

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。