JQuery异步加载PartialView的方法

本文实例讲述了JQuery异步加载PartialView的方法。分享给大家供大家参考，具体如下：

需求：页面上有dropdown之类的控件，当选择里面不同值的时候，下面关联的内容跟着改变。

思路：把与 dropdown关联的会改变的内容放到PartialView(ascx)里，用JQuery绑定dropdown的change事件，当选择值改变时，用JQuery ajax请求与PartialView相关的Action，得到数据后讲取到的内容覆盖原来的内容。

实现：

Model 类：

public class User{    public string UserName { get; set; }    public int Age { get; set; }    public int UserID { get; set; }    public static List<User> GetUsers()    {      List<User> userList = new List<User>();      User user = null;      user = new User();      user.UserID = 1;      user.UserName = "小明";      user.Age = 20;      userList.Add(user);      user = new User();      user.UserID = 2;      user.UserName = "小红";      user.Age = 21;      userList.Add(user);      user = new User();      user.UserID = 3;      user.UserName = "小强";      user.Age = 22;      userList.Add(user);      return userList;    }    public static User GetUserById(int userId)    {      return GetUsers().SingleOrDefault(u=>u.UserID==userId);    }}

我们的PartialView：

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<MvcApplication2.Models.User>" %><div>  <%if (Model != null)   {%>  用户名：<%=Model.UserName%><br />  年龄：<%=Model.Age%>  <%} %></div>

主页面：

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<MvcApplication2.Models.User>" %><asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">  Index</asp:Content><asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">  <h2>Index</h2>  <%=Html.DropDownList("users", ViewData["users"] as List<SelectListItem>)%>  <div id="userDetails">    <%Html.RenderPartial("UserDetails", Model); %>  </div></asp:Content><asp:Content ID="Content3" ContentPlaceHolderID="HeadMeta" runat="server">  <script language="javascript" src="/Scripts/user.js" type="text/javascript"></script></asp:Content>

Controller类：

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;using MvcApplication2.Models;namespace MvcApplication2.Controllers{  public class UserController : Controller  {    public ActionResult Index()    {      List<SelectListItem> userIdList = new List<SelectListItem>();      foreach (MvcApplication2.Models.User item in MvcApplication2.Models.User.GetUsers())      {        userIdList.Add(new SelectListItem { Text = item.UserName,Value = item.UserID.ToString()});      }      ViewData["users"] = userIdList;      MvcApplication2.Models.User user = MvcApplication2.Models.User.GetUsers().FirstOrDefault();      return View(user);    }    public PartialViewResult UserDetails(int? userId)    {      MvcApplication2.Models.User user = null;      if (userId == null)      {        user = MvcApplication2.Models.User.GetUsers().FirstOrDefault();      }      else      {        user = MvcApplication2.Models.User.GetUserById(userId.Value);      }      return PartialView(user);    }  }}