24.把新增和编辑里的（父菜单选择：做成下拉框）

EditPermission.cshtml(新增和编辑)

//父菜单显示绑定

@model MODEL.ViewModel.Permission


<script type="text/javascript" src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>@*//它不验证，只负责读属性*@
<style type="text/css">
     #modifyTb {
        width: 400px;
        border: 1px solid #0094ff;
        margin: 10px auto;
        border-collapse: collapse;
    }

    #modifyTb td, #modifyTb th {
        border: 1px solid #0094ff;
        padding: 4px;
    }
    
</style>

@using(Html.BeginForm()){//BeginForm方法 如果没有通过参数 设置 提交的路径，那么就会直接拿当前访问的路径 当 action
   
    <td>@Html.HiddenFor(model => model.pid)</td>    @*//权限id*@
    <table id="modifyTb">
        <tr>
            <td>父菜单</td>
            <td>@Html.Raw(ViewBag.parentMenuHtml)</td>//父菜单显示绑定
            
        </tr>
        <tr>
            <td>@Html.LabelFor(model => model.pName)</td>
            <td>@Html.TextBoxFor(model => model.pName)</td>
            <td>@Html.ValidationMessageFor(model => model.pName)</td>
        </tr>
        <tr>
            <td>@Html.LabelFor(model => model.pAreaName)</td>
            <td>@Html.TextBoxFor(model => model.pAreaName)</td>
            <td>@Html.ValidationMessageFor(model => model.pAreaName)</td>
        </tr>
        <tr>
            <td>@Html.LabelFor(model => model.pControllerName)</td>
            <td>@Html.TextBoxFor(model => model.pControllerName)</td>
            <td>@Html.ValidationMessageFor(model => model.pControllerName)</td>
        </tr>
        <tr>
            <td>@Html.LabelFor(model => model.pActionName)</td>
            <td>@Html.TextBoxFor(model => model.pActionName)</td>
            <td>@Html.ValidationMessageFor(model => model.pActionName)</td>
        </tr>
        <tr>
            <td>@Html.LabelFor(model => model.pFormMethod)</td>
            <td>@Html.DropDownListFor(model => model.pFormMethod, ViewBag.httpMethopList as IEnumerable<SelectListItem>)</td>
            <td>@Html.ValidationMessageFor(model => model.pFormMethod)</td>
        </tr>
        <tr>
            <td>@Html.LabelFor(model => model.pOperationType)</td>
            <td>@Html.DropDownListFor(model => model.pOperationType, ViewBag.OperationTypeList as IEnumerable<SelectListItem>)</td>
            <td>@Html.ValidationMessageFor(model => model.pOperationType)</td>
        </tr>
        <tr>
            <td>@Html.LabelFor(model => model.pOrder)</td>
            <td>@Html.TextBoxFor(model => model.pOrder)</td>
            <td>@Html.ValidationMessageFor(model => model.pOrder)</td>
        </tr>
        <tr>
            <td>@Html.LabelFor(model => model.pIsShow)</td>
            <td>@Html.EditorFor(model => model.pIsShow)</td>
            <td>@Html.ValidationMessageFor(model => model.pIsShow)</td>
        </tr>

        <tr>
            <td>@Html.LabelFor(model => model.pRemark)</td>
            <td>@Html.TextBoxFor(model => model.pRemark)</td>
        </tr>
        <tr>
            <td colspan="2" style="text-align:center"><input type="submit" value="保存" /></td>
        </tr>
    </table>

控制器、

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.Mvc;
using MVCOA.Helper;
using Common.Attributes;

namespace MVCOA.Login.Admin
{
    /// <summary>
    /// 系统管理
    /// </summary>
    public class SysController : Controller
    {
        #region 1.0 权限列表 视图 +Permission()
        [HttpGet]
        /// <summary>
        /// 权限列表 视图
        /// </summary>
        /// <returns></returns>
        public ActionResult Permission()
        {
            return View();
        }
        #endregion

        #region 1.1 权限列表 数据 +GetPermData()
        [HttpPost]
        /// <summary>
        /// 权限列表 视图
        /// </summary>
        /// <returns></returns>
        public ActionResult GetPermData()
        {
            SetDropDoneList();
            //获取页容量
            int pageSize = int.Parse(Request.Form["rows"]);
            //获取请求的页面
            int pageIndex = int.Parse(Request.Form["page"]);

            //查询分页数据
            var list = OperateContext.Current.BLLSession.IOu_PermissionBLL.GetPagedList(pageIndex, pageSize, p => p.pIsDel == false, p => p.pid).Select(p => p.ToPOCO());
            //总行数
            var rowCount = OperateContext.Current.BLLSession.IOu_PermissionBLL.GetListBy(p=>p.pParent==1 && p.pIsDel == false,p=>p.pid).Count();//没有删除的，菜单等级是1的
            MODEL.EasyUIModel.DataGridModel dgModel = new MODEL.EasyUIModel.DataGridModel()
            {
                total = rowCount,
                rows = list,
                footer = null
            };
            return Json(dgModel);
        }
        #endregion

        #region 1.2加载 权限修改 窗体html
        [HttpGet]
        /// <summary>
        /// 1.2加载 权限修改 窗体html
        /// </summary>
        /// <returns></returns>
        public ActionResult EditPermission(int id)//这个是留有
        {
            ViewBag.parentMenuHtml = GetParentMenuDrow();//1.2.下拉放到viewBag.parentMenuHtml
            var listt = OperateContext.Current.BLLSession.IOu_PermissionBLL.GetListBy(c => c.pid == id).FirstOrDefault().ToViewModel();

            //准备请求方式下拉框数据
            SetDropDoneList();
            return PartialView(listt);
        }
        #endregion

     

        #region 1.2 权限修改 +EditPermission(MODEL.ViewModel.Permission model)
        [HttpPost]
        [AjaxRequest]
        /// <summary>
        /// 1.2 权限修改
        /// </summary>
        /// <returns></returns>
        public ActionResult EditPermission(MODEL.Ou_Permission model)
        {
         
            
            int res = OperateContext.Current.BLLSession.IOu_PermissionBLL.Modify(model, "pName", "pAreaName", "pControllerName", "pActionName", "pFormMethod", "pOperationType", "pOrder", "pIsShow", "pRemark");
           if(res>0){
               return  Redirect("/admin/sys/Permission?ok"); 
         }
           //} catch { 
        else{
          return  Redirect("/admin/sys/Permission?err");
         }
}
     
             
        
        #endregion


        #region 1.3显示 新增权限表单代码
        [HttpGet]
        [AjaxRequest]
        /// <summary>
        /// 显示新增表单
        /// </summary>
        /// <returns></returns>
        public ActionResult AddPermission()
        {

            //准备请求方式下拉框数据
            SetDropDoneList();
            ViewBag.parentMenuHtml = GetParentMenuDrow();//1.1.下拉放到viewBag.parentMenuHtml
           return PartialView("EditPermission");//使用指定的视图创造呈现//partial局部的，

        }
        /// <summary>
        /// 1.生成 父菜单 下拉框 html字符串
    /// </summary>
        /// <returns></returns>
        string GetParentMenuDrow()
        {
            //1.查询所有的父菜单
            var list = OperateContext.Current.BLLSession.IOu_PermissionBLL.GetListBy(p => p.pParent == 1).Select(p => p.ToViewModel()).ToList();

            System.Text.StringBuilder sb = new StringBuilder("<select name='pParent'><option value=1>父菜单</option>", 1000);
            list.ForEach(p => sb.AppendLine("<option value='" + p.pid + "'>" + p.pName + "</option>"));
            sb.AppendLine("</select>");

            return sb.ToString();
        }
        #endregion

        #region 1.3显示 新增权限表单代码 +EditPermission(MODEL.ViewModel.Permission model)
        [HttpPost]
        [AjaxRequest]
        /// <summary>
        /// 1.2 1.3显示 新增权限表单代码
        /// </summary>
        /// <returns></returns>
        public ActionResult AddPermission(MODEL.Ou_Permission model)
        {
            model.pAddTime = DateTime.Now;
            model.pIsDel = false;
            int res = OperateContext.Current.BLLSession.IOu_PermissionBLL.Add(model);
            //下拉帮助类
            SetDropDoneList();
          
            if (res > 0)
                return Redirect("/admin/sys/Permission?ok");

            else
                return Redirect("/admin/sys/Permission?err");
        }
        #endregion

        #region  1.4删除权限操作+ActionResult DelPermission()
        
        /// <summary>
        /// 删除权限操作+DelPermission()
        /// </summary>
        /// <returns></returns>
        [HttpPost]
        [AjaxRequest]
        public ActionResult DelPermission()
        {
            try
            {
                int id = int.Parse(Request.Form["id"]);//获取要删除的id
                OperateContext.Current.BLLSession.IOu_PermissionBLL.DelBy(d => d.pid == id);//赋值给pid.
                return OperateContext.Current.RedirectAjax("ok", "删除成功了!!", null, "");
            }

            catch 
            {
                return OperateContext.Current.RedirectAjax("err", "您现在删除的权限正在被角色使用，请先取消角色中的这个权限！", null, "");
            }

        }

        #endregion

        #region 1.2子权限列表 视图+PermissionSon()
        /// <summary>
        /// 子权限列表视图
        /// </summary>
        /// <returns></returns>
        [HttpGet]
        [AjaxRequest]
        public ActionResult PermissionSon()
        {
            //获取父权限id
            int pid = int.Parse(Request.QueryString["pid"]);
            return View();
        } 
        #endregion

        /// <summary>
        /// 查询子权限列表数据
        /// </summary>
        /// <returns></returns>
        [HttpPost]
        [AjaxRequest]
        public ActionResult PermissionSon(FormCollection form)
        {
            //获取页容量
            int pageSize = int.Parse(Request.Form["rows"]);
            //获取请求的页面
            int pageIndex = int.Parse(Request.Form["page"]);
            //获取父权限id
            int parentMenid=int.Parse(Request.QueryString["pid"]);
            //查询分页数据
            var list = OperateContext.Current.BLLSession.IOu_PermissionBLL.GetPagedList(pageIndex, pageSize,p=>p.pParent==parentMenid && p.pIsDel == false,p=>p.pid).Select(p => p.ToPOCO());
            int rowCount = OperateContext.Current.BLLSession.IOu_PermissionBLL.GetListBy(p => p.pParent==parentMenid && p.pIsDel==false).Count();
           //2生成规定格式的 json字符串发回  给异步对象
            MODEL.EasyUIModel.DataGridModel dgModel = new MODEL.EasyUIModel.DataGridModel()
            { 
            total=rowCount,
            rows=list,
            footer=null
            };
            return Json(dgModel);
        }
        /// <summary>
        /// 下拉帮助类
        /// </summary>
        void SetDropDoneList()
        {
          
            //准备请求方式下拉框数据
            ViewBag.httpMethopList = new List<SelectListItem>() { 
               new SelectListItem(){Text="Get",Value="1"},
                new SelectListItem(){Text="Post",Value="2"},
                 new SelectListItem(){Text="Both",Value="3"}//Both两个都可以
           };
            //操作方式
            ViewBag.OperationTypeList = new List<SelectListItem>() { 
               new SelectListItem(){Text="无操作",Value="0"},
                new SelectListItem(){Text="eastyui连接",Value="1"},
                  new SelectListItem(){Text="打开新窗体",Value="2"}
            };
        }
    }
}