读取图片
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Drawing;
using System.Drawing.Imaging;
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.IO;
using System.Data.SqlClient;
using MySql.Data.MySqlClient;
public partial class Default2 : System.Web.UI.Page
{
    MySqlConnection conn = new MySqlConnection(System.Configuration.ConfigurationManager.AppSettings["conmy"]);
    protected void Page_Load(object sender, EventArgs e)
    {
      
        if (!this.Page.IsPostBack) 
        {
            this.show();  
        }
    }
    public void show() 
    {
        
            string ss = Request.QueryString["id"].ToString();
            string s3 = "select * from imgpic  where id=" + ss;
            MySqlCommand comm = new MySqlCommand(s3, conn);
            conn.Open();
            MySqlDataReader dr = comm.ExecuteReader(CommandBehavior.CloseConnection);
            while(dr.Read())
            {
                Response.Clear();
                Response.C;
                Response.BinaryWrite((byte[])dr["myimg"]);//读取
            }
            Response.End();
            conn.Close();
    }
}
注意图片显示要在另一张页面中
在你要显示的页面添加img 控件src="显示你图片的页面"; 
122058662 最后编辑于 2008-04-22 09:59:24

------解决方案--------------------
在showImg.aspx中写代码

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Text;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

上面是引用
   protected void Page_Load(object sender, EventArgs e)
   {
       // 在此处放置用户代码以初始化页面

       连接数据库读取数据-----------------
       SqlDataReader Dr = data.GetDataReader(sql);

       if (Dr != null)
       {
           while (Dr.Read())
           {
               if (Dr[0] != null)
               {
                   Response.ContentType = "image/jpeg";
                   Response.BinaryWrite((byte[])Dr["photo"]);
               }
               else
               {
                   Response.Write("暂无图片");
               }
           }

       }
       else
       {
           Response.Write("暂无图片");
       }
       Dr.Close();
   }