在ASP.NET MVC中实现AJAX

程序员文章站 2024-02-29 09:08:01

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DemoController.cs

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

namespace MVCAjax.Controllers
{
    public class DemoController : Controller
    {
        // GET: Demo
        public ActionResult Index()
        {
            return View();
        }

        /// <summary>  
        /// 获取系统时间 强制不缓存  
        /// </summary>  
        /// <returns></returns>  
        [OutputCache(NoStore = true, Duration = 0)]
        public ActionResult GetTime()
        {
            return Content(DateTime.Now.ToString());
        }

        [HttpPost]
        public ActionResult GetPostStr(FormCollection form)
        {
            string userName = form["username"];
            string userAge = form["userage"];
            return Content(userName + userAge);
        }

        /// <summary>  
        /// 删除用户  
        /// </summary>  
        /// <returns></returns>  
        [HttpPost]
        public ActionResult DeleteUser()
        {
            //省略操作部分  
            return JavaScript("alert('删除成功')");
        }

        public ActionResult ConfirmPass(int id)
        {
            //省略操作部分  
            return new HttpStatusCodeResult(System.Net.HttpStatusCode.OK);
        }

        /* 
            需安装Microsoft jQuery Unobtrusive Ajax 这个 NuGet 插件 
            Install-Package Microsoft.jQuery.Unobtrusive.Ajax
            AjaxOptions中还有其他可以指定的属性： 
            Confirm                 等效于javascript中的return confirm(msg)，在点击该链接时先提示需要确认的信息。 
            HttpMethod              指定使用Get或者是Post方式发送Http请求 
            InsertMode              指定使用何种方式在指定的元素更新数据，"InsertAfter", "InsertBefore", or "Replace" 默认为：Replace 
            LoadingElementDuration  Loading元素显示的时间 
            LoadingElementId        可以指定在Http请求期间显示的Loading元素 
            OnBegin                 在Http请求之前执行的javascript方法 
            OnComplete              在Http请求结束时执行的方法 
            OnFailure               在Http请求失败时执行的方法 
            OnSuccess               在Http请求成功时执行的方法 
            UpdateTargetId          Http请求更新的页面元素 
            Url Http请求的Url          
         */

    }
}

Index.cshtml

@{
    Layout = null;
}

@{
    //设置ajaxOptions
    var ajaxOptions = new AjaxOptions()
    {
        OnSuccess = "SetPassSuccess",
        OnFailure = "SetPassFailure",
        Confirm = "设置留言审核状态为'通过'？",
        HttpMethod = "Post"
    };
}

<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
    <script src="~/Scripts/jquery-1.10.2.min.js"></script>
    <script src="~/Scripts/jquery.unobtrusive-ajax.min.js"></script>
    <script type="text/javascript">

        $(function () {
            $("#alink").click(function () {
                $.get("/Demo/GetTime", function (response) {
                    $("#showInfo").html(response);
                });
            });
        });
        function SetPassSuccess() {
            alert('审核通过');
            location.reload();
        }
        function SetPassFailure(xhr) {
            alert('审核失败（HTTP状态代码：' + xhr.status + ')');
        }
    </script>
</head>
<body>
    <div>
        <a id="alink" href="javascript:void(0);">①传统方式Ajax</a><br /><br />
        @Ajax.ActionLink("②MVC中使用Ajax", "GetTime", new AjaxOptions { UpdateTargetId = "showInfo" })<br /><br />
        @using (Ajax.BeginForm("GetPostStr", new AjaxOptions { UpdateTargetId = "showInfo" }))
        {
            <input type="text" name="username" /><br />
            <input type="text" name="userage" /><br />
            <input type="submit" value="③MVC Post方式提交Ajax" />
        }
        <br /><br />
        @Ajax.ActionLink("MVC中Ajax请求带回调执行", "ConfirmPass", new { id = 1 }, ajaxOptions)<br /><br />

        <hr />
        <div id="showInfo">更新区域</div>
        <hr />
        @Ajax.ActionLink("Ajax删除数据", "DeleteUser", "Demo", new { id = 1 },
            new AjaxOptions()
            {
                UpdateTargetId = "strcontent",
                HttpMethod = "Post",
                Confirm = " 您确定要删除该记录吗？该操作不可恢复！"
            })
    </div>
</body>
</html>

运行结果如图:

在ASP.NET MVC中实现AJAX

实体类:

Product.cs

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

namespace MVCAjax.Models
{
    public class Product
    {
        public string ProdCode { get; set; }
        public string ProdName { get; set; }
        public int ProdQty { get; set; }
    }
}

AjaxController.cs

using MVCAjax.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace MVCAjax.Controllers
{
    public class AjaxController : Controller
    {
        IEnumerable<Product> prodList = new List<Product>
        {
            new Product { ProdCode = "P001", ProdName = "Mobile", ProdQty = 75 },
            new Product { ProdCode = "P002", ProdName = "Laptop", ProdQty = 125 },
            new Product { ProdCode = "P003", ProdName = "Netbook", ProdQty = 100 },
        };
        // GET: Ajax
        public ActionResult Index()
        {
            return View();
        }

        public PartialViewResult ShowDetails()
        {
            System.Threading.Thread.Sleep(3000);
            string code = Request.Form["txtCode"];
            Product prod = new Product();
            foreach (Product p in prodList)
            {
                if (p.ProdCode == code)
                {
                    prod = p;
                    break;
                }
            }
            return PartialView("_ShowDetails", prod);
        }
    }
}

Index.cshtml


@{
    Layout = null;
}

@{
    var ajaxOption = new AjaxOptions
    {
        HttpMethod = "POST",
        UpdateTargetId = "div1",
        InsertionMode = InsertionMode.Replace,
        LoadingElementId = "waitimage"
    };
}

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
    <script src="~/Scripts/jquery-1.10.2.min.js"></script>
    <script src="~/Scripts/jquery.unobtrusive-ajax.min.js"></script>
</head>
<body>
    <div>
        @using (Ajax.BeginForm("ShowDetails", "Ajax", ajaxOption))
        {
            <h1>输入产品Code</h1>
            <h2>
                产品Code: @Html.TextBox("txtCode")<br />
                <input type="submit" value="Show Details" />
                <input type="reset" value="Clear" />
            </h2>
        }
    </div>
    <div id="div1">
    </div>
</body>
</html>

_ShowDetails.cshtml

@model MVCAjax.Models.Product
@{
    Layout = null;
}
<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>_ShowDetails</title>
</head>
<body>
    <div>
        @if (Model.ProdCode == null)
        {
            <h1>无效的产品Code</h1>
        }
        else
        {
            <h1>产品详情</h1>
            <h2>
                产品Code: @Model.ProdCode<br />
                产品名称: @Model.ProdName<br />
                产品数量: @Model.ProdQty<br />
            </h2>
        }
    </div>
</body>
</html>

运行结果如图：

在ASP.NET MVC中实现AJAX

在ASP.NET MVC中实现AJAX

DemoController.cs

Index.cshtml

运行结果如图:

实体类:

Index.cshtml

_ShowDetails.cshtml

运行结果如图：

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