login.aspx.cs

一个手机电子商务网站 包含物品展示

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

namespace MobileShop
{
	/// <summary>
	/// Login 的摘要说明。
	/// </summary>
	public class Login : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.TextBox txtAccount;
		protected System.Web.UI.WebControls.TextBox txtPassword;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Button Button2;
		private System.Exception LoginError = new Exception("用户名或密码错误，请确认后重试！");
	
		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.btnSignin_Click);
			this.Button2.Click += new System.EventHandler(this.btnRegister_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void btnRegister_Click(object sender, System.EventArgs e)
		{
			Response.Redirect("Register.aspx");
		}

		private void btnSignin_Click(object sender, System.EventArgs e)
		{
			string ConnectionString = "Provider=Microsoft.Jet.OleDb.4.0;Data Source=";
			ConnectionString += Server.MapPath("MobileShop.mdb");
			OleDbConnection conn = new OleDbConnection(ConnectionString);

			OleDbCommand cmd;
			
			try
			{
				cmd = new OleDbCommand("select Account,Pwd,IsAdmin From UserInfo where Account='" + txtAccount.Text +"' AND Pwd='" + txtPassword.Text + "'", conn);
				conn.Open();
				OleDbDataReader dr;
				if(cmd.ExecuteScalar() != null)
				{
					dr = cmd.ExecuteReader();
					
					Session.Timeout=30;
					//Response.Cookies.Add(customerCookie);
					dr.Read();
					if(dr.GetBoolean(2)==true)
					{
						dr.Close();
						Session.Add("AdminID", txtAccount.Text);
						Response.Redirect("Administrators.aspx?IsAdmin=true",false);
					}
					else
					{
						dr.Close();
						Session.Add("CustomerID",txtAccount.Text);
						Response.Redirect("Default.aspx",false);
					}
				}
				else
				{
					throw LoginError;
				}
			}
			catch(Exception err)
			{
				MessageBox(err.Message);
			}
			finally
			{
				
				conn.Close();
			}
		}

		public   void   MessageBox(string   strMessage)   
		{   
			Response.Write("<"+"SCRIPT   language=javascript>");   
			Response.Write("alert(\""+strMessage+"\");");   
			Response.Write("<"+"/SCRIPT>\n");   
		}
	}
}