Ajax实现网易相册样式的修改

来源：作者：出处：巧巧读书 2007-10-09 进入讨论组

普通的ajax应用，结合javascript对html元素的动态操控，结合而成一个优美的效果。

还是用Ajax.net，设置与前篇文章一样，不再累述。
代码如下：
163photoTest.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _163photoTest : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        description.Text = GetDescription();
        AjaxPro.Utility.RegisterTypeForAjax(typeof(_163photoTest));
    }

    //取数据库里的描述
    protected string GetDescription()
    {
        try
        {
            string strComm = "select photo_description from tab_photo where photo_id=1";
            SqlConnection myConn = new SqlConnection("user id=sa;password=123;Database =test;data source=z;");
            myConn.Open();
            SqlCommand myComm = new SqlCommand(strComm, myConn);
            SqlDataReader myReader = myComm.ExecuteReader();
            myReader.Read();
            return myReader.GetString(0);
        }
        catch
        {
            return "";
        }
    }

    [AjaxPro.AjaxMethod]
    //将description保存进数据库 www.knowsky.com
    public bool UpdateDesc(string description)
    {
        try
        {
            string strComm = "update tab_photo set photo_description='" + description + "' where photo_id=1";
            SqlConnection myConn = new SqlConnection("user id=sa;password=123;Database =test;data source=z;");
            myConn.Open();
            SqlCommand myComm = new SqlCommand(strComm, myConn);
            myComm.ExecuteNonQuery();
            return true;
        }
        catch
        {
            return false;
        }
    }
}

163photoTest.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="163photoTest.aspx.cs" Inherits="_163photoTest" %>

<!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>无标题页</title>
<script language="javascript" type="text/javascript">
    function display()
    {
        document.getElementById('descfield').style.display='block';
        document.getElementById('descfield').value = document.getElementById('description').innerText ;
        document.getElementById('description').style.display='none';
        document.getElementById('save').style.display='block';
    }
    var s;
    function UpdateDesc()
    {
        s= document.getElementById("descfield").value;
        document.getElementById("descfield").value="正在保存";
        _163photoTest.UpdateDesc(s,UpdateDesc_callback);
    }

    function UpdateDesc_callback(res)
    {
        if (res)
        {
            document.getElementById('description').style.display='block';
            document.getElementById("description").innerText =s;
            document.getElementById('descfield').style.display='none';
            document.getElementById('save').style.display='none';
        }
    }
</script>
</head>
<body onload="document.getElementById('descfield').style.display='none';document.getElementById('save').style.display='none';">
    <form id="form1" runat="server">
    <div id="div1" onmousemove="this.style.backgroundColor='#C0C0FF';" onmouseout="this.style.backgroundColor='';" onclick="display()">
        <asp:Label ID="description" runat="server" Text="Label"></asp:Label>

    </div>
    <input type="text" id ="descfield" />
        <input type="button" id="update" value="修改描述" onclick="display()"/>
        <input type="button" id="save" value="保存修改" onclick="UpdateDesc()"/>
        <br />
    </form>
</body>
</html>

出处：Coder at the Doorsill——风中聆听 BLOG