login.aspx页面:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="login.aspx.cs" Inherits="webRoot_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">
<script src="../js/jquery-1.4.1-vsdoc.js" type="text/javascript"></script>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server" Text="用户名："></asp:Label>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />
<asp:Label ID="Label2" runat="server" Text="密 码："></asp:Label>
<asp:TextBox ID="TextBox2" runat="server" TextMode="Password"></asp:TextBox><br />
<asp:Button ID="Button1" runat="server" Text="登录" />
</div>
</form>
</body>
</html>
login.aspx.cs页面:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
public partial class webRoot_login : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
query();
}
public void query()
{
string str = ConfigurationManager.ConnectionStrings["ConnStr"].ConnectionString; //连接数据库，在webconfig中配置
SqlConnection Conn = new SqlConnection(str);
Conn.Open();
string sql = "select * from userInfo where userName=@UserName and password=@PassWord" ;
SqlCommand Comm = new SqlCommand(sql, Conn);
Comm.Parameters.Add("UserName",TextBox1.Text);
Comm.Parameters.Add("PassWord",TextBox2.Text);
SqlDataReader sdr = Comm.ExecuteReader();
if (sdr.Read())
{
Session["UserName"] = TextBox1.Text;
Session["PassWord"] = TextBox2.Text;
Label1.Text = "登陆成功！";
}
else
{
Label1.Text = "无法登陆，用户名或密码错误！";
}
Conn.Close();
}
}
web.config页面:
<?xml version="1.0"?>
<!--
有关如何配置 ASP.NET 应用程序的详细信息，请访问
http://go.microsoft.com/fwlink/?LinkId=169433
-->
<configuration>
<connectionStrings>
<add name="ConnStr" connectionString="Data Source=5KVR6JEFONLYFSU;Initial Catalog=test;uid=sa;pwd=123;Integrated Security=True"/>
</connectionStrings>
<system.web>
<compilation debug="true" targetFramework="4.0"/>
</system.web>
</configuration>
今天学会把数据库连接方式连接方式写在web.config中。5KVR6JEFONLYFSU是服务器名；test是数据库名；sa是用户名；123是密码；userInfo是其中的一个表，字段名如下图：
后面会慢慢的增加难度，如用户名密码都不能为空，写在javascript中