.net 将数据库二进制图片在image中展示

关键代码

                int iLeft = (j % 3) * 360;

                string strLeft = iLeft.ToString();

                int iLeft0 = iLeft + 10;
                string strLeft0 = iLeft0.ToString();
                string  HImage ="70";

                int iTop = row * 70;
                int iTopImage = iTop - 20;
                string strTop = iTop.ToString();
                string strTopImage = iTopImage.ToString();

                Image image = new Image();
                image.ImageUrl = "Common/ShowImage.aspx?id=" + dt.Rows[i][3].ToString(); //获取签名
                image.CssClass = "tmd";
                image.Style.Add(HtmlTextWriterStyle.Left, iLeft0 + "px");
                image.Style.Add(HtmlTextWriterStyle.Top, strTopImage + "px");
                image.Style.Add(HtmlTextWriterStyle.Height, HImage + "px");

                this.Controls.Add(image);
                

ShowImage.aspx

using System;
using System.Data.OracleClient;
using System.Web.UI;

public partial class NewFrameWorkUI_Physician_Common_ShowImage : System.Web.UI.Page
{
    string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionStringOracle10"].ToString();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            ShowData();
        }
    }
    public void ShowData()
    {
        object s = Request.QueryString["id"];     
        string strSQL = "select emp_no,name,signature from staff_dict where id='" + s.ToString() + "'";
        OracleConnection connection = new OracleConnection(connectionString);
        OracleCommand cmd = new OracleCommand(strSQL, connection);
        try
        {
            connection.Open();
            OracleDataReader myReader = cmd.ExecuteReader();
            if (myReader.Read())
            {
                if (myReader["signature"] is DBNull)
                    return;
                Response.Clear();
                Response.ContentType = "application/binary;";
                Response.BinaryWrite((byte[])myReader["signature"]);

                Response.Flush();
                Response.End();
            }
        }
        catch (System.Data.OracleClient.OracleException E)
        {
            throw new Exception(E.Message);
        }
    }
}