.源代码登陆界面源代码：用户请登录注册用户登录 用户名: 密码:新用户请注册                  用户名: 密码:窗体发生代码：using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;publicpartialclasslogn : System.Web.UI.Pageprotectedvoid Page_Load(object sender, EventArgs e) if (!IsPostBack) Panel1.Visible = false; Panel2.Visible = false; protectedvoid LinkButton2_Click(object sender, EventArgs e) Panel1.Visible = true; Panel2.Visible = false; protectedvoid LinkButton1_Click(object sender, EventArgs e) Panel1.Visible = false; Panel2.Visible = true; protectedvoid Button1_Click(object sender, EventArgs e) if (TextBox5.Text = & TextBox6.Text = ) Label1.Text = 欢送你，登录成功; else Label1.Text = 你输入的用户名错误或密码错误，请重新输入; protectedvoid Button2_Click(object sender, EventArgs e) if (TextBox7.Text = & TextBox8.Text = ) Label2.Text = 欢送你，注册成功; else Label2.Text = 请输入用户名和密码; 主界面源代码：