SqlConnection conn=new SqlConnection(ConfigurationSettings.AppSettings["ConnStr"]);

String sql="SELECT imageFROM append where id='" + strID + "'";

SqlCommand command=new SqlCommand(sql,conn);

conn.Open();

SqlDataReader dr=command.ExecuteReader();

dr.Read();

byte[] imgdata = (byte[])dr["image"];

Response.BinaryWrite(imgdata);

dr.Close();

conn.Close();