ASP.NET开发基础(Cookie的简单使用)-CFANZ编程社区

ASP.NET.基础入门.ASP.NET开发基础.Cookie的简单使用

0 目录
2 ASP.NET

2.2 Cookie的简单使用

2.2.1 题目
2.2.2 源码
2.2.1 目录结构
2.2.2 效果展示

0 目录

2 ASP.NET

2.2 Cookie的简单使用

2.2.1 题目

输入密码,用cookie进行保存方便下次登录使用

2.2.2 源码

Contact.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Contact.aspx.cs" Inherits="WebHomework.Contact1" %>

<!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>
</head>
<body>
    <form id="formLogin" runat="server">
        <div>
            <table>
                <tr>
                    <td>
                        <strong>用户名</strong>
                    </td>
                    <td>
                        <asp:TextBox ID="name" runat="server"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td>
                        <strong>密码</strong>
                    </td>
                    <td>
                        <asp:TextBox ID="pwd" runat="server"></asp:TextBox>
                    </td>

                </tr>
                <tr>
                    <td>
                        <strong>用户身份</strong>
                    </td>
                    <td>
                        <asp:DropDownList ID="identity" runat="server">
                            <asp:ListItem Selected="True" Value="user">用户</asp:ListItem>
                            <asp:ListItem Value="admin">管理员</asp:ListItem>
                        </asp:DropDownList>
                    </td>
                </tr>
                <tr>
                    <td colspan="2" style="text-align:center;">
                        <asp:CheckBox ID="remember" runat="server" Text="记住我" OnCheckedChanged="remember_CheckedChanged"/>
                    </td>
                </tr>
                <tr>
                    <td colspan="2" style="text-align:center;">
                        <asp:Button ID="login" runat="server" Text="登录" OnClick="login_Click" />
                        <asp:Button ID="cancel" runat="server" Text="取消" OnClick="cancel_Click" />
                    </td>
                </tr>
            </table>
        </div>
    </form>
</body>
</html>

ASP.NET开发基础(Cookie的简单使用)_简单使用

Contact.aspx.cs

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

namespace WebHomework
{
    public partial class Contact1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (Request.Cookies["name"] != null)
            {
                name.Text = Request.Cookies["name"].Value;
            }
            if (Request.Cookies["pwd"] != null)
            {
                pwd.Attributes["value"] = Request.Cookies["pwd"].Value;
            }
        }

        protected void login_Click(object sender, EventArgs e)
        {
            if (remember.Checked)
            {
                Response.Cookies["name"].Value = name.Text;
                Response.Cookies["pwd"].Value = pwd.Text;
            }

            string username = name.Text.Trim();
            string password = pwd.Text.Trim();
            string id = identity.SelectedValue.ToString();

            if (username.Equals("123")&&password.Equals("123"))
            {
                if (id.Equals("admin"))
                {
                    
                    Response.Redirect("admin.aspx");
                }
                else
                {
                    Response.Redirect("user.aspx");
                }               
            }
            else
            {
                Response.Write("<script>alert('用户名或密码错误!')</script>");
            }
        }

        protected void cancel_Click(object sender, EventArgs e)
        {
            name.Text = "";
            pwd.Attributes["Value"] = "";
            if (remember.Checked)
            {
                remember.Checked=false;
            }
        }

        protected void remember_CheckedChanged(object sender, EventArgs e)
        {
            
        }
    }
}