前台HTML代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Denglu.aspx.cs" Inherits="Denglu" %> <!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> <style type="text/css"> * { margin: 0px auto; padding: 0px; } </style> </head> <body> <form id="form1" runat="server"> <div id="aa" style="400px"> <h1> </h1> <h1> </h1> <h1> </h1> <h1> </h1> <h1> </h1> <h1> 登录</h1> <p> </p> <p> </p> <asp:Label ID="Label1" runat="server" Text="用户名："></asp:Label> <asp:TextBox ID="txtUid" runat="server"></asp:TextBox> <br /> <br /> <asp:Label ID="Label2" runat="server" Text="密码："></asp:Label> <asp:TextBox ID="txtPwd" runat="server" TextMode="Password"></asp:TextBox> <br /> <br /> <asp:Button ID="Button1" runat="server" Text="登陆" OnClick="Button1_Click" /> <asp:Literal ID="Literal1" runat="server"></asp:Literal> </div> </form> </body> </html>
后台C#代码：
public partial class Denglu : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { TextDataContext context = new TextDataContext(); //取值 string uid = txtUid.Text; string pwd = txtPwd.Text; //查询 var query = context.login1.Where(p => p.username == uid && p.password == pwd); //判断 if (query.Count() > 0) { Session["uid"] = uid; Response.Redirect("Main.aspx"); } else { Literal1.Text = "<script type='Text/javascript'>alert('用户名或密码错误！');</script>"; } } }
