Ajax无刷新实现图片切换特效_.net资料_编程技术-数科优化网

一、AjaxMethod
using System;
using System.Data;
using System.Data.SqlClient;

namespace AjaxImage
{
/**////

/// AjaxMethod 的摘要说明。
///

public class AjaxMethod
{
public AjaxMethod()
{
}
public static string ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"].ToString();

GetDataSet#region GetDataSet
public static DataSet GetDataSet(string sql)
{
SqlDataAdapter sda = new SqlDataAdapter(sql, ConnectionString);
DataSet ds = new DataSet();
sda.Fill(ds);
if (ds != null)
return ds;
else
return null;
}
#endregion

[AjaxPro.AjaxMethod]
public static DataSet GetPhotoList( int iCategoryID )
{
string sql = "Select id,photo_path FROM Photo where photo_category_id=" + iCategoryID ;
return GetDataSet( sql );
}
[AjaxPro.AjaxMethod]
public static DataSet GetPhotoInfo( int id )
{
string sql = string.Format("SELECT photo_title, photo_description FROM Photo WHERE id = {0}", id);
return GetDataSet( sql );
}

}//end class
}

二、页面HTML代码：










onmouseout="this.src='images/play_bw.gif'"> onmouseout="this.src='images/pause_bw.gif'"> onmouseout="this.src='images/prev_bw.gif'"> onmouseout="this.src='images/next_bw.gif'">



三、javascript:

四、在主页面的ONLOAD事件里面添加：

onload="PreloadImage('2')"

五、WebConfig添加:

六、数据库脚本:
CREATE TABLE [Photo] (
[id] [int] IDENTITY (1, 1) NOT NULL ,
[photo_title] [varchar] (128) COLLATE Chinese_PRC_CI_AS NULL ,
[photo_description] [text] COLLATE Chinese_PRC_CI_AS NULL ,
[photo_category_id] [int] NULL ,
[photo_path] [varchar] (255) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO