令建一张网页a.aspx在Page_Load中写下:SqlConnection conn=new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["ConnString"]);//连接数据库
string selectCmd="select image from Table ";
SqlCommand command=new SqlCommand(selectCmd,conn);
conn.Open();
SqlDataReader reader=command.ExecuteReader();
if (reader.Read())
{
if (reader["image"]!=null && reader["image"].ToString()!="")
Response.BinaryWrite((byte[])reader["image"]);

令image标记的src=a.aspx;