DataReader的例子

前：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DataReader对象.aspx.cs" Inherits="WebApplication1.DataReader对象" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <table border="1" cellpadding="0" cellspacing="0">
    <tr><td>编号</td><td>账号</td><td>真实姓名</td><td>年龄</td><td>
      性别</td><td>手机</td><td>电话</td><td>电子邮件</td></tr>
      <%
         ShowData();
          
           %>
    </table>
    </div>
    </form>
</body>
</html>

后台Cs：

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

namespace WebApplication1
{
    public partial class DataReader对象 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }
       public void ShowData()
        {
            SqlConnection conn = new SqlConnection(@"server=Rose-PC\SQLEXPRESS;Database=User;User Id=sa;password=");
            SqlCommand command =new SqlCommand("Select * from UserInfo where Sex=1",conn);
            conn.Open();
            //得到DataReader的实例   注意：使用CommandBehavior这个参数
           //以便同时关闭Connection
            SqlDataReader reader = command.ExecuteReader(CommandBehavior.CloseConnection);
           //如果当前记录还有下一条记录，则循环不会终止
           while (reader.Read())
            {
               //按着列顺序和对应类型直接读取值
                Response.Write("<tr><td>" + reader.GetInt32(0) + "</td>");
                Response.Write("<td>" + reader.GetString(1) + "</td>");
                Response.Write("<td>" + reader.GetString(2) + "</td>");
                Response.Write("<td>" + reader.GetByte(3) + "</td>");
                //下面是按着列顺序直接读取值，并且根据值来判断最终显示结果
                Response.Write("<td>" + (reader.GetBoolean(4)==true?"男":"女" )+ "</td>");
               //按着列顺序读取,列的值需要做相应的转换
                Response.Write("<td>" + reader[5].ToString() + "</td>");
                Response.Write("<td>" + reader["Phone"] + "</td>");
                Response.Write("<td>" + reader["Email"].ToString() + "</td></tr>\n");

            }
            reader.Close();
        }
    }
}

显示的图片：

posted @ 2013-09-26 20:30  笨笨丫头~双  阅读(142)  评论(0)  编辑  收藏  举报