联接Sql server

连接Sql server
后台代码：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;
public partial class Login : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) {
} protected void btnLogin_Click(object sender, EventArgs e) { string connstr = "Data Source=GFWMJ3FJ7JLJJBR;Initial Catalog=ZT_DB.MDF;Persist Security Info=True;User ID=sa;Password=111111"; using (SqlConnection conn = new SqlConnection(connstr)) { conn.Open(); using (SqlCommand cmd = conn.CreateCommand()) { cmd.CommandText = "Select * from person where person_name=@u"; cmd.Parameters.Add(new SqlParameter("u",txtUserName.Text)); SqlDataReader reader = cmd.ExecuteReader(); if (reader.Read()) { if (reader.GetString(reader.GetOrdinal("pwd")) == txtPassword.Text) { Response.Redirect("Page1.aspx"); } else { Label1.Text = "密码不正确"; } } else { Label1.Text = "用户名不存在!"; } } } }}
login.aspx:<%@ Page Language="C#" CodeFile="Login.aspx.cs" Inherits="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"> <title></title></head><body> <form id="form1" runat="server"> <div> <table> <tr> <td></td> <td>用户名:</td> <td></td> <td> <asp:TextBox ID="txtUserName" runat="server"></asp:TextBox></td> </tr>
<tr> <td></td> <td>密 码:</td> <td></td> <td> <asp:TextBox ID="txtPassword" runat="server" TextMode="Password"></asp:TextBox></td> </tr>
<tr> <td></td> <td> <asp:Button ID="btnLogin" runat="server" Text="登录" onclick="btnLogin_Click" /></td> <td></td> <td><asp:Button ID="btnClear" runat="server" Text="注册" /></td> <td> <asp:Label ID="Label1" runat="server" Text=""></asp:Label></td> </tr>
</table> </div> </form></body></html>

联接Sql server

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