ASP.NET MVC2 in Action 读书笔记 [12-4] MVC Ajax Helpers-优快云博客

本文介绍了一个使用ASP.NET AJAX实现评论添加功能及隐私政策显示的例子。通过BeginForm进行异步提交，展示如何使用ActionLink更新页面内容。

Index.aspx:

<script src="../../Scripts/jquery-1.3.2.js" type="text/javascript"></script>

    <script src="../../Scripts/MicrosoftAjax.js" type="text/javascript"></script>

    <script src="../../Scripts/MicrosoftMvcAjax.js" type="text/javascript"></script>

<h3>Ajax.BeginForm</h3>

    <h4>Comments</h4>

    <ul id="comments">

    </ul>

    <% using(Ajax.BeginForm("AddComment", new AjaxOptions

                                                HttpMethod = "POST",

                                                UpdateTargetId = "comments",

                                                InsertionMode = InsertionMode.InsertAfter

                                            })) { %>

        <%= Html.TextArea("Comment", new{rows=5, cols=50}) %>

        <button type="submit">Add Comment</button>

    <% } %>

    <h3>Ajax.Link</h3>

    <%= Ajax.ActionLink("Show the privacy Policy", "PrivacyPolicy",

        new AjaxOptions{InsertionMode = InsertionMode.Replace, UpdateTargetId = "privacy"}) %>

    <div id="privacy"></div>

AjaxHelpersController.cs:

public class AjaxHelpersController : Controller

        private IList<string> _comments = new List<string>();

        public ActionResult Index()

            return View(_comments);

        [HttpPost]

        public ActionResult AddComment(string comment)

            _comments.Add("<li>" + comment + "</li>");

            return Content(string.Join("\n", _comments.ToArray()));

        public ActionResult PrivacyPolicy()

            const string privacyText = @"

                <h2>Our Commitment To Privacy</h2>

                Your privacy is important to us. To better protect your privacy we provide this notice explaining our online

                information practices and the choices you can make about the way your information is collected and used.

                To make this notice easy to find, we make it available on our homepage and at every point where personally

                identifiable information may be requested.";

            return Content(privacyText, "text/html");

转载于:https://www.cnblogs.com/RobotTech/archive/2011/08/04/2126953.html