login.aspx.cs

有关购物的程序

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.OleDb;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace shopping
{
	/// <summary>
	/// WebForm1 的摘要说明。
	/// </summary>
	public class WebForm1 : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Button Button2;
		protected System.Web.UI.WebControls.TextBox username;
		protected System.Web.UI.WebControls.TextBox password;
		protected System.Web.UI.WebControls.Button Button1;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
		}

		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button1_Click(object sender, System.EventArgs e)
		{
			string str="Provider=Microsoft.Jet.OleDb.4.0;";
			str+=@"Data Source=";
			str+=Server.MapPath("UserInfo.mdb");
			OleDbConnection conn=new OleDbConnection(str);
			conn.Open();
			string strsql="select * from userlogin where 用户名='"+this.username.Text+"' and 密码='"+this.password.Text+"'";
			OleDbCommand comm=new OleDbCommand(strsql,conn);
			comm.CommandType=CommandType.Text;
			OleDbDataReader DR=comm.ExecuteReader();
			if(!DR.Read())
			{
				DR.Close();
				conn.Close();
				Response.Write("<script language=javascript>alert('你的用户名或密码错误!')</script>");
			}
			else
			{
				DR.Close();
				conn.Close();
				System.Web.Security.FormsAuthentication.SetAuthCookie(this.username.Text,false);
				Session["username"]=this.username.Text;
				Response.Redirect("受保护窗体/shopping.aspx");
			}
		}
	}
}