Ajax实现网易相册样式的修改

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
    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>

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