ASP.NET开发基础(Cookie的简单使用)

╰半夏微凉° 2023-07-17 06:56 13阅读 0赞

### 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
 *  5 下一章

# 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>

![在这里插入图片描述][20200320135052638.png]

> *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)
            {
                
            }
        }
    }

### 2.2.1 目录结构 ###

![在这里插入图片描述][20200320135142509.png]

### 2.2.2 效果展示 ###

![在这里插入图片描述][20200320135237163.png]  
![在这里插入图片描述][20200320135252704.png]  
![在这里插入图片描述][20200320135305348.png]  
![在这里插入图片描述][20200320135314821.png]  
![在这里插入图片描述][20200320135339473.png]  
![在这里插入图片描述][20200320135328392.png]

# 5 下一章 #

**博客地址:**

[20200320135052638.png]: /images/20230528/faeb442833554f00894d746dca3f00e8.png
[20200320135142509.png]: /images/20230528/7e164b44ce164e4fb8509f12335af136.png
[20200320135237163.png]: /images/20230528/fea58c234ae84bd3831e5032b418bd5b.png
[20200320135252704.png]: /images/20230528/bf03bfcdd13645ba90bea943a4d407f7.png
[20200320135305348.png]: /images/20230528/27af3304b17f4f4593c3e22d6d4be8fd.png
[20200320135314821.png]: /images/20230528/75e2a6be1e1f4b47acbdad1cdc90eb65.png
[20200320135339473.png]: /images/20230528/66d23109d87041c9a646e130e56e04e2.png
[20200320135328392.png]: /images/20230528/4fb83d10db2e4adf9a15f2e5ebc2835b.png