文章内容

2017/3/26 12:15:08,作 者: 黄兵

MVC之Ajax.BeginForm使用详解之更新列表

1.首先,请在配置文件设置如下:(该项默认都存在且为true)

<add key="UnobtrusiveJavaScriptEnabled" value="true" />

2.在你的_layout.cshtml中引入JS文件:

<script src="~/Scripts/jquery-1.8.2.min.js"></script>
<script src="~/Scripts/jquery.validate.min.js"></script>
<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>
<script src="~/Scripts/jquery.unobtrusive-ajax.min.js"></script>

3.获取简单的某个值,比如ID,NAME等int,string类型:

数据实体User.cs:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace MvcApplication1.Models
{
    public class User
    {
        public int ID { get; set; }
        public string Name { get; set; }
    }
}

控制器UserController.cs:(部分代码)

 /// <summary>
        /// 定义的用户仓库
        /// </summary>
        private List<User> _userRepository = new List<User> { 
        new User{ID=1,Name="ab"},
        new User{ID=2,Name="bc"},
        new User{ID=3,Name="cd"},
        new User{ID=4,Name="ace"}
        };
        #region GetUserID For (获取简单的某个值)
        public ActionResult UserID()
        {
            return View();
        }
        [HttpPost]
        public int UserID(string name)
        {
            User user = _userRepository.FirstOrDefault(x => string.Equals(x.Name, name, StringComparison.CurrentCultureIgnoreCase));
            if (user == null)
            {
                return -1;
            }
            return user.ID;
        }
        #endregion


视图UserID.cshtml:

@using MvcApplication1.Models;
@model User
@{
    ViewBag.Title = "查询用户ID";
}
@using (Ajax.BeginForm("UserID", "User", new AjaxOptions { HttpMethod = "Post", UpdateTargetId = "div_uid", InsertionMode = InsertionMode.Replace }))
{
    @Html.TextBox("name")
    <button type="submit" name="CX" style="width:80px; height:30px;">查询UserID</button>
}
<div id="div_uid"></div>
<!--如果是异步,则本文本框输入的值不会被刷新掉-->
<input type="text" autocomplete="off" />

上面的参数有什么问题看这一篇文章:Ajax.BeginForm参数详解

如果你前面该引入的文件都引了,那么在点击查询时,div_uid 中就会显示查询到的ID

结果如下:


4.获取用户列表,用于异步刷新列表:

注意:如果你有一个列表需要异步查询并更新查询结果,那就需要使用分布视图!也就是说你还需要一个View才可以,不可以将结果直接返回到本页!

控制器UserController.cs:(部分代码)

#region GetUserList  (获取用户列表,用于异步刷新列表)
        // GET: /User/
        public ActionResult UserList()
        {
            var result = _userRepository;
            return View(result);
        }
        [HttpPost]
        public ActionResult UserList(string name)
        {
            var result = _userRepository;
            if (!string.IsNullOrWhiteSpace(name))
            {
                result = _userRepository.Where(u => u.Name.Contains(name)).ToList();
            }
            return PartialView("_pview", result);
        }
        #endregion

主视图UserList.cshtml:

@using MvcApplication1.Models;
@model List<User>
@{
    ViewBag.Title = "Index";
}
@using (Ajax.BeginForm("UserList", "User", new AjaxOptions { HttpMethod = "Post", UpdateTargetId = "tb", InsertionMode = InsertionMode.Replace }))
{
    @Html.TextBox("name")
     <button type="submit"  name="CX" style="width:80px; height:30px;">查询UserList</button> 
}
<table>
    <thead>
        <tr>
            <td>用户ID</td>
            <td>用户名称</td>
        </tr>
    </thead>
    <tbody id="tb">
    @Html.Partial("_pview", Model)
    </tbody>
</table>
<!--如果是异步,则本文本框输入的值不会被刷新掉-->
<input type="text" autocomplete="off" />

分布视图_pview.cshtml:

@using MvcApplication1.Models;
@model List<User>
@{
    Layout = null;
    ViewBag.Title = "_pview";
}
@foreach (User u in Model)
{
    <tr>
        <td>@u.ID</td>
        <td>@u.Name</td>
    </tr>
}

结果如下:


点击查询后:


5.好了,基本上主流的2个用法都有,希望能对大家有帮助!

本文转载自:cnblogs-Mr.H

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