jquery 调用后台方法

来源：互联网发布：金蝶科目初始数据录入编辑：程序博客网时间：2024/05/21 17:53

前台页面代码CsdnAddComment.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="CsdnAddComment.aspx.cs"
Inherits="Study.CsdnAddComment" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>仿CSDN添加评论</title>
    <script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
    <script type="text/javascript">
        $(document).ready(function () {
            $("#btnComment").click(function () {
                var txtComment = $("#txtComment").val();
                $.ajax({
                    type: "post",
                    url: "CsdnAddComment.aspx/AddComment",
                    data: " { 'comment':'" + txtComment + "'}",
                    contentType: "application/json; charset=utf-8",
                    datatype: "json",
                    success: function (message) {
                        $("#Comment").append('<div class="NewComment">' + txtComment + '</div>');
                        $("#NewComment").next().slideToggle();
                    }
                });
            });
        });
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <center>
        <div style="width: 50%">
            新闻列表:
            <asp:Repeater ID="rpNews" runat="server">
                <ItemTemplate>
                    <div>
                        <%#DataBinder.Eval(Container.DataItem, "news_title")%>
                    </div>
                    <hr />
                </ItemTemplate>
            </asp:Repeater>
            <div id="Comment">
            </div>
        </div>
        <div>
            <textarea id="txtComment" rows="8" cols="70"></textarea><br />
            <input type="button" value="评论" id="btnComment"/>
        </div>
    </center>
    </form>
</body>
</html>
     后台代码CsdnAddComment.aspx.cs

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Services;

namespace Study
{
    public partial class CsdnAddComment : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                this.GetNewsList();
            }
        }

        /// <summary>
        /// 获取新闻列表
        /// </summary>
        private void GetNewsList()
        {
            News n = new News();
            List<News> newsList = n.GetNewsList();
            rpNews.DataSource = newsList;
            rpNews.DataBind();
        }

        //添加新评论
        [WebMethod]
        public static string AddComment(string comment)
        {
            string sqlStr = "insert into tb_news(news_title,news_content,news_time,news_readtimes) values('" + comment + "','内容','2011/6/8','100')";
            if (SQLHelper.ExecuteNonQuery(sqlStr) > 0)
            {
                return "success";
            }
            else
            {
                return "failed";
            }
        }
    }
}