asp.net登录界面制作实例
来源：互联网 发布：手机数据自动开启 编辑：程序博客网 时间：2024/05/29 11:08
类库代码如下：
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Data.SqlClient;using System.Configuration;using System.Data;/// <summary>///CommonClass 的摘要说明/// </summary>public class CommonClass{public CommonClass(){} /// <summary> /// 数据库连接类 /// </summary> /// <returns>连接对象</returns> public SqlConnection GetConnection() { string myStr = ConfigurationManager.AppSettings["ConnectionString"].ToString(); SqlConnection myConn = new SqlConnection(myStr); return myConn; } /// <summary> /// 弹出框 /// </summary> /// <param name="TxtMessage">弹出提示信息</param> /// <param name="Url">对话框关闭后，转到地址</param> /// <returns></returns> /// public string MessageBox(string TxtMessage,string Url) { string str; str = "<script language=javascript>alert('"+TxtMessage+"');location='"+Url+"'</script>"; return str; } /// <summary> /// 用来执行增删改功能 /// </summary> /// <param name="sqlStr"> 操作的SQL语句</param> /// <returns>成功返回true，失败返回FALSE</returns> /// public Boolean ExecSQL(string sqlStr) { SqlConnection myConn = GetConnection(); myConn.Open(); SqlCommand myCmd = new SqlCommand(sqlStr,myConn); try { myCmd.ExecuteNonQuery(); myConn.Close(); } catch { myConn.Close(); return false; } return true; } /// <summary> /// 返回数据源的数据集 /// </summary> /// <param name="sqlStr">操作SQL语句</param> /// <param name="TableName">数据表名称</param> /// <returns>数据集DataSet</returns> public DataSet GetDataSet(string sqlStr, string TableName) { SqlConnection myConn = GetConnection(); myConn.Open(); SqlDataAdapter adapt = new SqlDataAdapter(sqlStr, myConn); DataSet ds = new DataSet(); adapt.Fill(ds, TableName); myConn.Close(); return ds; } /// <summary> /// 验证登录，防止SQL注入式攻击 /// </summary> /// <param name="loginName">用户名</param> /// <param name="loginPwd">密码</param> /// <returns></returns> public int checkLogin(string loginName,string loginPwd) { SqlConnection myConn = GetConnection(); SqlCommand myCmd = new SqlCommand( "select count(*) from tb_User where Name=@loginName and PassWord=@loginPwd",myConn); myCmd.Parameters.Add(new SqlParameter("@loginName",SqlDbType.VarChar,20)); myCmd.Parameters["@loginName"].Value = loginName; myCmd.Parameters.Add(new SqlParameter("@loginPwd", SqlDbType.VarChar, 50)); myCmd.Parameters["@loginPwd"].Value = loginPwd; myConn.Open(); int i = (int)myCmd.ExecuteScalar(); myCmd.Dispose(); myConn.Close(); return i; } /// <summary> /// 实现随机验证码 /// </summary> /// <param name="n">验证码个数</param> /// <returns>返回生成的随机数</returns> public string RandomNum(int n) { string strchar = "0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z"; string[] VcArray = strchar.Split(','); string VNum = ""; int temp = -1; Random rand=new Random(); for (int i=1; i < n + 1; i++) { if (temp != -1) { rand = new Random(i*temp*unchecked((int)DateTime.Now.Ticks)); } int t = rand.Next(61); if (temp != -1 && temp == t) { return RandomNum(n); } temp = t; VNum += VcArray[t]; } return VNum; }}.aspx代码如下：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Login.aspx.cs" Inherits="Login" %>
<!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>
<style type="text/css">
.tbl_login{ padding:10px; margin:10px;}
.tbl_login td{ padding:10px; border:1px solid gray;}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Table ID="Table1" runat="server" CssClass="tbl_login">
<asp:TableRow runat="server">
<asp:TableCell>管理员姓名：</asp:TableCell>
<asp:TableCell><asp:TextBox ID="txt_name" runat="server"></asp:TextBox></asp:TableCell>
</asp:TableRow>
<asp:TableRow runat="server">
<asp:TableCell>管理员密码：</asp:TableCell>
<asp:TableCell><asp:TextBox ID="txt_pwd" runat="server" TextMode="Password"></asp:TextBox></asp:TableCell>
</asp:TableRow>
<asp:TableRow ID="TableRow1" runat="server">
<asp:TableCell>验证码：</asp:TableCell>
<asp:TableCell><asp:TextBox ID="txt_code" runat="server" ></asp:TextBox></asp:TableCell>
<asp:TableCell style="border:1px solid silver;">
<asp:Label ID="lab_Code" runat="server" Text="8888"></asp:Label></asp:TableCell>
</asp:TableRow>
</asp:Table>
<asp:Button ID="btn_login" runat="server" Text="登录"
onclick="btn_login_Click1" />
<asp:Button ID="btn_cancel" runat="server" Text="取消"
onclick="btn_cancel_Click1" />
</div>
</form>
</body>
</html>
.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;public partial class Login : System.Web.UI.Page{ CommonClass cc = new CommonClass(); protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { this.lab_Code.Text = cc.RandomNum(4); } } protected void btn_login_Click1(object sender, EventArgs e) { if (txt_name.Text.Trim() == "" || txt_pwd.Text.Trim() == "") { Response.Write(cc.MessageBox("登录名和密码不能为空！", "Login.aspx")); } else { if (txt_code.Text.Trim() == lab_Code.Text.Trim()) { int IntUserIn = cc.checkLogin(txt_name.Text.Trim(), txt_pwd.Text.Trim()); if (IntUserIn > 0) { Response.Write("<script language=javascript> window.open('AdminIndex.aspx');window.close();</script>"); } else { Response.Write(cc.MessageBox("登录名或密码错误！", "Login.aspx")); } } else { Response.Write(cc.MessageBox("验证码错误！", "Login.aspx")); } } } protected void btn_cancel_Click1(object sender, EventArgs e) { Response.Write("<script>window.close();location='javascript:history.go(-1)';</script>"); }}测试效果如下：
- asp.net登录界面制作实例
- ASP.NET 登录界面
- 如何制作Asp.Net界面模板
- ASP.net--仿网易登录界面
- ASP.NET 登录界面验证提示框
- asp.net登录界面记住密码
- 利用asp.net制作登录页面
- 利用asp.net制作登录页面
- ASP.NET实例：用C#制作艺术字
- asp.net验证码制作实例代码
- CF 登录界面制作
- QT 登录界面制作
- 登录界面的制作
- 制作Asp.net界面模板的过程及原理
- ASP .NET登录界面用户验证码代码
- ASP .NET登录界面用户验证码代码
- ASP.NET下登录界面验证码的实现
- ASP.NET 实现登录界面(生成验证码)
- 关于Eclipse 中File explorer不能导入.mp3等文件问题和Adb问题
- Spring(三大框架整合) 入门
- 第七章知识结构框图
- iOS - 工厂方法
- redis 不能save问题解决
- asp.net登录界面制作实例
- iOS - 类别与类扩展
- acer 4750 Fn+亮度键（左右方向键亮度调节）无效问题的解决办法
- 历年真题软件设计师下午考试题汇分析与技巧
- 流式布局的实现-3-onLayout
- ActiveMQ的断线重连机制
- iOS - 观察者模式与四种实现
- 数据挖掘的数据分析方法
- dynamic programming （动态规划）浅谈
