repeater重复器、地址栏传值、response

repeater重复器：

<HeaderTemplate>

<ItemTemplate>

<AlternatingItemTemplate>

<FooterTemplate>

实体类与数据访问类：

实体类包含属性扩展

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

/// <summary>
/// user 的摘要说明
/// </summary>
public class user
{
    SqlConnection conn = null;
    SqlCommand cmd = null;
    public user()
    {
        conn = new SqlConnection("server=.;database=data0928;user=sa;pwd=123");
        cmd = conn.CreateCommand();
    }
    public int ids { get; set; }
    public string username { get; set; }
    public string password { get; set; }
    public string nickname { get; set; }
    public bool sex { get; set; }
    public DateTime birthday { get; set; }
    public string nation { get; set; }
    public string Class { get; set; }
    public string sexs
    {
        get {
            string end = "";
            end = sex ? "男" : "女";
            return end;
        }

    }
    public string nationblue
    {
        get
        {
            string end = "";
            if (nation == "n001")
            {
                end = "background-color:blue";
            }
            return end;
        }
    }

    public string pwdc
    {
        get
        {
            string end="****";
            if (password == "")
            {
                end = "";
            }
            return end;
        }
    }
    public string nationname
    {
        get
        {
            string end = "";
            cmd.CommandText = "select*from nation where nationcode='"+nation+"'";
            conn.Open();
            SqlDataReader dr = cmd.ExecuteReader();
            if (dr.HasRows)
            {
                dr.Read();
                end = dr["nationname"].ToString();

            }
            conn.Close();
            return end;
        }
    }

    public string sexd
    {
        get
        {
            string a = "";
            if (sex == true)
            {
                a = "20090119095429204.png";
            }
            else
            { a = "20090119095429248.png"; }
            return a;
        }
    }
    public string classname
    {
        get
        {
            string end = "";
            cmd.CommandText = "select*from class where classcode='"+Class+"'";
            conn.Open();
            SqlDataReader dr = cmd.ExecuteReader();
            if (dr.HasRows)
            {
                dr.Read();
                end = dr["classname"].ToString();
            }

            conn.Close();
            return end;
        }
    }

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

/// <summary>
/// userdata 的摘要说明
/// </summary>
public class userdata
{
    SqlConnection conn = null;
    SqlCommand cmd = null;
    public userdata()
    {
        conn = new SqlConnection("server=.;database=data0928;user=sa;pwd=123");
        cmd = conn.CreateCommand();
    }
    public List<user> select()
    {
        List<user> ulist = new List<user>();
        cmd.CommandText = "select*from users";
        conn.Open();
        SqlDataReader dr = cmd.ExecuteReader();
        if (dr.HasRows)
        {
            while (dr.Read())
            {
                user u = new user();
                u.ids = Convert.ToInt32(dr[]);
                u.username =dr[].ToString();
                u.password = dr[].ToString();
                u.nickname = dr[].ToString();
                u.sex = Convert.ToBoolean(dr[]);
                u.birthday = Convert.ToDateTime(dr[]);
                u.nation = dr[].ToString();
                u.Class = dr[].ToString();

                ulist.Add(u);
            }
        }
        conn.Close();
        return ulist;

    }
}

aspx文件中：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
    <style>
        .tb1 {
            width:%;
            text-align:center;
        }
        .a {
            background-color:navy;
            color:white;
        }
        .b {
            background-color:purple;
            color:white;
        }
        .c {
            background-color:gray;
            color:white;
        }
        .b:hover {
            transition :.5s;
            background-color:gray;
        }

    </style>

</head>
<body>
    <form id="form1" runat="server">
        <asp:Repeater ID="Repeater1" runat="server">
            <HeaderTemplate>
                <table class="tb1" >
            <tr class="a">
                <td>编号</td>
                <td>用户名</td>
                <td>密码</td>
                <td>昵称</td>
                <td>性别</td>
                <td>生日</td>
                <td>民族</td>
                <td>班级</td>
             </tr>
            </HeaderTemplate>

            <ItemTemplate>

            <tr class="b" style="<%#Eval("nationblue") %>">
                <td><%#Eval("ids") %></td>
                <td><%#Eval("username") %></td>
                <td><%#Eval("pwdc") %></td>
                <td><%#Eval("nickname") %></td>
                <td><img src="<%#Eval("sexd") %>" /></td>
                <td><%#Eval("birthday","{0:yyyy年MM月dd日}") %></td>
                <td><%#Eval("nationname") %></td>
                <td><%#Eval("classname") %></td>
             </tr>

            </ItemTemplate>

            <AlternatingItemTemplate>
                <tr class="c" style="<%#Eval("nationblue") %>">
                <td><%#Eval("ids") %></td>
                <td><%#Eval("username") %></td>
                <td><%#Eval("pwdc") %></td>
                <td><%#Eval("nickname") %></td>
                <td><img src="<%#Eval("sexd") %>" /></td>
                <td><%#Eval("birthday","{0:yyyy年MM月dd日}") %></td>
                <td><%#Eval("nationname") %></td>
                <td><%#Eval("classname") %></td>
             </tr>

            </AlternatingItemTemplate>

            <FooterTemplate>

            </table>

            </FooterTemplate>

        </asp:Repeater>            

    </form>
</body>
</html>

csswen文件中：

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

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Repeater1.DataSource = new userdata().select();
        Repeater1.DataBind();
    }
}

效果展示：

QueryString: - get提交方式/地址栏传值

　　原理：地址栏后面接 ?key=value&key=value 在后台代码中可以通过这些key来接受需要的字符串

　　优点：不占用服务器内存，执行快  缺点：直接显示在了地址栏上，安全性差

Request:  -  获取请求对象

　　使用：在页面加载事件中 string a =Request["key"];

Response: - 响应请求对象

　　Response.Redirect("想要跳转的页面地址");

　　Response.Write("想要在页面中插入的语句，例如：<script>alert('123321');</script>");