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  • 作业(10)

      3、功能实现(30分)
    完成密码修改功能,具体要求如下:
     (1)用户进入“训战合一教育管理平台”的密码修改页面,列出包含用户名、旧密码、新密码和确认密码的表单,显示效果如图1所示。
    (2)在如图1所示的网页中实现修改指定用户的密码。(注:应提供可操作的交互性)。

    图1 “训战合一教育管理平台”密码修改页面原型

    VS里的效果图:

    各家浏览器的效果图(待改进。。):

    Default.aspx代码如下:

     1      <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs"   Inherits="_Default" %>
     2     
     3     <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
     4     
     5     <html xmlns="http://www.w3.org/1999/xhtml">
     6     <head runat="server">
     7     <title></title>
     8     </head>
     9     <body>
    10     <form id="form1" runat="server">
    11     修改密码<br/>
    12       
    13     <asp:Label ID="Label1" runat="server" Text="用 户 名:"></asp:Label>
    14     &nbsp;<asp:TextBox ID="txtUserName" runat="server"></asp:TextBox>
    15     <br />
    16     <asp:Label ID="Label2" runat="server" Text="旧 密 码:"></asp:Label>
    17     <asp:TextBox ID="txtPassword" runat="server" 
    18     ontextchanged="TextBox2_TextChanged"></asp:TextBox>
    19     <br />
    20     <asp:Label ID="NewPassword" runat="server" Text="新 密 码:"></asp:Label>
    21     <asp:TextBox ID="txtNewPassword" runat="server"></asp:TextBox>
    22     &nbsp;<br />
    23     <asp:Label ID="RegPassword" runat="server" Text="确认密码:"></asp:Label>
    24     <asp:TextBox ID="txtRegPassword" runat="server"></asp:TextBox>
    25     <br />
    26     <br />
    27     &nbsp;&nbsp;&nbsp;&nbsp;
    28     <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="提交"/>
    29     &nbsp;&nbsp;
    30     <asp:Button ID="Button2" runat="server" Text="清空" />
    31     <br />
    32     </form>
    33     </body>
    34     </html>

    Default.aspx.cs代码如下:

      using System;
        using System.Collections.Generic;
        using System.Linq;
        using System.Web;
        using System.Web.UI;
        using System.Web.UI.WebControls;
        using System.Configuration;
        using System.Data.SqlClient;
        using System.Data;
        
        public partial class _Default : System.Web.UI.Page
        {
        protected void Page_Load(object sender, EventArgs e)
        {
        
        }
        protected void TextBox2_TextChanged(object sender, EventArgs e)
        {
        
        }
        protected void Button1_Click(object sender, EventArgs e)
        {
        //1.定义连接字符串
        string connstr = ConfigurationManager.ConnectionStrings["TrainSystemConnectionString"].ConnectionString;
        
         //2.写SQL语句
         
           using ( SqlConnection conn=new SqlConnection(connstr))
        {
        conn.Open();
           //3.查询语句
        
        string selectstr = string.Format("select count (*) from Sys_User where  Password='{0}' and UserName='{1}'", txtPassword.Text.Trim(),txtUserName.Text.Trim());
         
           //4.创建对象
         SqlCommand cmd=new SqlCommand(selectstr,conn);
        
           //5.执行
         try
         {
         int i = (int)cmd.ExecuteScalar();
         if (i == 1)
         {
         string updatestr = string.Format("update Sys_User set  Password='{0}' where  UserName='{1}'", txtNewPassword.Text.Trim(),txtUserName.Text.Trim());
         //cmd=new SqlCommand (updatestr,conn);
         cmd.CommandText = updatestr;
         //cmd.Connection = conn;
         try
         {
         cmd.ExecuteNonQuery();
         Response.Write("修改成功");
        
         }
         catch
         {
          Response.Write("修改不成功");
         }
         }
        
         else
          
          Response.Write("用户名或密码错误,请重新输入!");
        
          }
        
         catch
         {
         Response.Write("查询不成功");
         }
        }
           
        }
        }
        
    

      web.config代码如下:

     1  <?xml version="1.0"?>
     2         <!--
     3       有关如何配置 ASP.NET 应用程序的详细信息,请访问
     4       http://go.microsoft.com/fwlink/?LinkId=169433
     5       -->
     6     
     7     <configuration>
     8     
     9     <connectionStrings>
    10     <add name="TrainSystemConnectionString" connectionString="Data Source=T134;Initial Catalog=TrainSystem;Integrated Security=True"
    11     providerName="System.Data.SqlClient" />
    12     </connectionStrings>
    13     <system.web>
    14     <compilation debug="false" targetFramework="4.0" />
    15     </system.web>
    16     
    17     </configuration>

    总结一下经常用到的“套路”:

    1.创建连接字符串 string connstr

    2.创建连接对象  SqlConnection conn

    3.创建查询字符串  string selectstr

    4.创建命令对象 SqlCommand cmd

    5 执行命令

    未完成部分:
                     新密码和确认密码不一致无错误提示。

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  • 原文地址:https://www.cnblogs.com/learnerluosd/p/7648791.html
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