035. asp.netWeb用户控件之四通过用户控件实现投票和结果分析

2022-10-07 09:59:19

用户控件Vote.ascx代码

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="vote.ascx.cs" Inherits="vote" %>

    <link href="style.css" rel="stylesheet" type="text/css" />

    <style type="text/css">

        .style1

        {

            font-size: small;

            color: #0066CC;

        }

    </style>

<div id="box">

  <table width="370" border="0">

    <tr>

      <td width="364" height="37" class="style1">您对本公司的售后服务是否满意？</td>

    </tr>

    <tr>

      <td height="106">

          <asp:RadioButtonList ID="RadioButtonList1" runat="server" Font-Size="9pt">

              <asp:ListItem Selected="True">非常满意</asp:ListItem>

              <asp:ListItem>基本满意</asp:ListItem>

              <asp:ListItem>不满意</asp:ListItem>

              <asp:ListItem>不发表意见</asp:ListItem>

          </asp:RadioButtonList>

        </td>

    </tr>

    <tr>

      <td height="30" align="center">

          <asp:ImageButton ID="ImageButton1" runat="server" ImageUrl="images/dc_03.gif"

              onclick="ImageButton1_Click" />

          　　　　　　<img src="data:images/dc_05.gif" width="82" height="33" onclick="window.location.replace('result.aspx')"  style="cursor:pointer"/></td>

    </tr>

  </table>

</div>

用户控件vote.ascx.cs代码:

public partial class vote : System.Web.UI.UserControl

{

    protected void Page_Load(object sender, EventArgs e)

    {

    }

    /// <summary>

    /// 从txt文件中读取投票数量

    /// </summary>

    /// <param name="P_str_path">要读取的txt文件的路径及名称</param>

    /// <returns>返回一个int类型的值，用来记录投票数量</returns>

    public static int readCount(string P_str_path)

    {

        int P_int_count = ;

        StreamReader streamread;

        streamread = File.OpenText(P_str_path);

        while (streamread.Peek() != -)

        {

            P_int_count = int.Parse(streamread.ReadLine());

        }

        streamread.Close();

        return P_int_count;

    }

    /// <summary>

    /// 写入投票数量

    /// </summary>

    /// <param name="P_str_path">要操作的txt文件的路径及名称</param>

    public static void addCount(string P_str_path)

    {

        int P_int_count = readCount(P_str_path);

        P_int_count += ;

        //将数据记录写入文件

        StreamWriter streamwriter = new StreamWriter(P_str_path, false);

        streamwriter.WriteLine(P_int_count);

        streamwriter.Close();

    }

    protected void ImageButton1_Click(object sender, ImageClickEventArgs e)

    {

        string P_str_IP = Request.UserHostAddress.ToString();

        HttpCookie oldCookie = Request.Cookies["userIP"];

        if (oldCookie == null)

        {

            int flag = RadioButtonList1.SelectedIndex;

            switch (flag)

            {

                case : addCount(Server.MapPath("result1.txt")); break;

                case : addCount(Server.MapPath("result2.txt")); break;

                case : addCount(Server.MapPath("result3.txt")); break;

                case : addCount(Server.MapPath("result4.txt")); break;

            }

            Page.ClientScript.RegisterStartupScript(this.GetType(), "", "alert('投票成功，谢谢您的参与！');", true);

            HttpCookie newCookie = new HttpCookie("userIP");    //定义新的Cookie对象

            newCookie.Expires = DateTime.MaxValue;

            //添加新的Cookie变量IPaddress，值为P_str_IP

            newCookie.Values.Add("IPaddress", P_str_IP);

            Response.AppendCookie(newCookie);            //将变量写入Cookie文件中

        }

        else

        {

            string P_str_oldIP = oldCookie.Values["IPaddress"];

            if (P_str_IP.Trim() == P_str_oldIP.Trim())

            {

                Page.ClientScript.RegisterStartupScript(this.GetType(), "", "alert('一个IP地址只能投一次票，谢谢您的参与！');", true);

            }

            else

            {

                HttpCookie newCookie = new HttpCookie("userIP");

                newCookie.Values.Add("IPaddress", P_str_IP);

                newCookie.Expires = DateTime.MaxValue;

                Response.AppendCookie(newCookie);

                int rflag = RadioButtonList1.SelectedIndex;

                switch (rflag)

                {

                    case : addCount("result1.txt"); break;

                    case : addCount("result2.txt"); break;

                    case : addCount("result3.txt"); break;

                    case : addCount("result4.txt"); break;

                }

                Page.ClientScript.RegisterStartupScript(this.GetType(), "", "alert('投票成功，谢谢您的参与！');", true);

            }

        }

    }

}

结果页面result.aspx代码:

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

<%@ Register src="vote.ascx" tagname="vote" tagprefix="uc1" %>

<!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>在线投票系统</title>

</head>

<body>

    <form id="form1" runat="server">

    <uc1:vote ID="vote1" runat="server" />

    </form>

</body>

</html>

结果页面result.aspx.cs代码:

public partial class Default2 : System.Web.UI.Page

{

    protected string M_str_rate1;

    protected string M_str_rate2;

    protected string M_str_rate3;

    protected string M_str_rate4;

    protected int P_int_count1;

    protected int P_int_count2;

    protected int P_int_count3;

    protected int P_int_count4;

    protected void Page_Load(object sender, EventArgs e)

    {

        P_int_count1 = readCount(Server.MapPath("result1.txt"));

        P_int_count2 = readCount(Server.MapPath("result2.txt"));

        P_int_count3 = readCount(Server.MapPath("result3.txt"));

        P_int_count4 = readCount(Server.MapPath("result4.txt"));

        int P_int_count = P_int_count1 + P_int_count2 + P_int_count3+P_int_count4;

        if (P_int_count == )

        {

            Response.Write("<script>alert('还没有人投过票！')</script>");

            lblresult.Text = "共有0人参与投票";

        }

        else

        {

            M_str_rate1 = (Convert.ToDouble(P_int_count1) *  / Convert.ToDouble(P_int_count)).ToString("0.00") + "%";

            M_str_rate2 = (Convert.ToDouble(P_int_count2) *  / Convert.ToDouble(P_int_count)).ToString("0.00") + "%";

            M_str_rate3 = (Convert.ToDouble(P_int_count3) *  / Convert.ToDouble(P_int_count)).ToString("0.00") + "%";

            M_str_rate4 = (Convert.ToDouble(P_int_count4) *  / Convert.ToDouble(P_int_count)).ToString("0.00") + "%";

            lblresult.Text = "共有" + P_int_count.ToString() + "人参与投票";

        }

    }

    /// <summary>

    /// 从txt文件中读取投票数量

    /// </summary>

    /// <param name="P_str_path">要读取的txt文件的路径及名称</param>

    /// <returns>返回一个int类型的值，用来记录投票数量</returns>

    public static int readCount(string P_str_path)

    {

        int P_int_count = ;

        StreamReader streamread;

        streamread = File.OpenText(P_str_path);

        while (streamread.Peek() != -)

        {

            P_int_count = int.Parse(streamread.ReadLine());

        }

        streamread.Close();

        return P_int_count;

    }

}

默认页面Default.aspx页面代码:

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

<%@ Register src="vote.ascx" tagname="vote" tagprefix="uc1" %>

<!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>在线投票系统</title>

</head>

<body>

    <form id="form1" runat="server">

    <uc1:vote ID="vote1" runat="server" />

    </form>

</body>

</html>

style.css代码:

#box {

    height: 195px;

    width: 370px;

    background-image: url(images/1.jpg);

    background-repeat: no-repeat;

    padding-top: 65px;

    padding-right: 45px;

    padding-left: 45px;

}

#box2 {

    height: 195px;

    width: 370px;

    background-image: url(images/2.jpg);

    background-repeat: no-repeat;

    padding-top: 65px;

    padding-right: 45px;

    padding-left: 45px;

}

用到的四个文件:

用到的几张图片:

最终效果展示:

码农公寓

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