这个html窗口的后台用c#怎么写啊啊，用oracle数据库

下载安装oracle的驱动，代码和sql server差不多，参考：
http://wenku.baidu.com/link?url=0E3HdZaqK8HAginDnGg_AJ0KM_rvppZde04Y_GeWoLbbJWUXDRtXiMxPZiVTuAZ-xYSygiOOFtqN1GGulnt85XXLW0CY4439ufCFrQ-el3e
http://www.wzsky.net/html/Program/net/39793.html

namespace WebApplication9
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}

    protected void dr_Click(object sender, EventArgs e)
    {
        string conn = "Data Source= orc;User ID=xuehp;Password=xue920919";
     OracleConnection cn = new OracleConnection(conn);
    cn.Open();
    string strsql = "select count(*) from chicken where name='" + username.Text + "' and password='" + userpassword.Text + "'";
    OracleCommand cmd = new OracleCommand(strsql, cn);
   OracleDataReader rd = cmd.ExecuteReader();
    if (rd.Read())
    {
        if (rd.GetValue(0).ToString() == username.Text)
        {
            if (rd.GetValue(1).ToString() ==userpassword.Text)
            {
                Response.Redirect("Default.aspx");
            }
            else
            {
                Response.Write("<script>alert('密码错误！')</script>");
            }
        }
        else
        {
            Response.Write("<script>alert('用户名错误！')</script>");
        }
    }
    else
    {
        Response.Write("<script>alert('用户不存在！')</script>");
    }
}


    }



}