hmk417

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.OleDb;
using System.Data;

namespace WebApplication1
{
    public partial class _default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            Response.Write("Session id is:" + Session.SessionID + "<br>");
            HttpCookie cookie = Request.Cookies["test"];
            if (cookie == null)
                Label1.Text = "欢迎登陆";
            else
                Label1.Text = "欢迎" + cookie.Values["Name"] + "登录啊";
        }
        void ShowMessage(string str){
            string temp=Label1.Text;
            Label1.Text=temp+str;
        }
        protected void Button1_Click(object sender, EventArgs e) {
            string ConnectionString = "Provider=OraOleDb.Oracle;Data Source=Y2014_TRAINING;User Id=GSDCTRAIN;Password=GSDCTRAIN;";//写连接串
            OleDbConnection conn = new OleDbConnection(ConnectionString);//创建一个新连接
            try {
                conn.Open();
                OleDbCommand cmd = conn.CreateCommand();

                cmd.CommandText = "select * from EMP";//在这儿写sql语句
                OleDbDataReader odr = cmd.ExecuteReader();//创建一个OracleDateReader对象
                while (odr.Read())//读取数据，如果odr.Read()返回为false的话，就说明到记录集的尾部了 
{
                    Response.Write(odr.GetString(1).ToString());//输出字段1，这个数是字段索引，具体怎么使用字段名还有待研究
                }
                odr.Close();
            }
            catch (Exception ee) {
                Response.Write(ee.Message); //如果有错误，输出错误信息
            }
            finally {
                conn.Close(); //关闭连接
            }
        }
    }
}