left.aspx.cs

ASP。NET免费毕业论文设计：ASP[1].NET网络书店(C_,全源码提供) 采用C#语言编写

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 Hugo;
namespace BookShop
{
	/// <summary>
	/// Left 的摘要说明。
	/// </summary>
	public class Left : System.Web.UI.Page
	{
	
		BookType myBookType =new BookType();
		protected System.Web.UI.WebControls.TextBox tb_Password;
		protected System.Web.UI.WebControls.TextBox tb_Account;
		protected System.Web.UI.WebControls.DataGrid dg_BookType;
		protected System.Web.UI.WebControls.DataGrid dg_Book10;
		Book myBook=new Book ();
		private int id;
		protected System.Web.UI.WebControls.Panel Panel1;
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.ImageButton ib_Login;
		protected System.Web.UI.WebControls.CheckBox chkRemember;
		protected System.Web.UI.WebControls.HyperLink HyperLink1;
		protected System.Web.UI.WebControls.HyperLink HyperLink2;
		protected System.Web.UI.WebControls.Panel Panel2;
		protected System.Web.UI.WebControls.Label lblDate;
		protected System.Web.UI.WebControls.Label lblTimes;
		protected System.Web.UI.WebControls.Label lblInfo;
		protected System.Web.UI.WebControls.HyperLink HyperLink3;
		protected System.Web.UI.WebControls.HyperLink HyperLink4;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.Label Label4;
		protected System.Web.UI.WebControls.Label lblInfo2;
		protected System.Web.UI.WebControls.HyperLink hlCity;
		private string name;

		private void Page_Load(object sender, System.EventArgs e)
		{
			if (!(this.IsPostBack))
			{
				if(!Object.Equals(Session["UserName"],null))
				
				{
					ShowInfo();	
				}
				else
				{
					if(!Object.Equals(Request.Cookies["HugoShopBookLogin"],null))
					{
						string username;
						GetCookie(out username);
						this.tb_Account.Text = username;
					}
				}
				GridBind();
			}
			
		}
		private void GridBind()
		{
			DataView MyDv1;
			DataView MyDv2;
			MyDv1=myBookType.GetBookType();
			dg_BookType.DataSource =MyDv1;
			dg_BookType.DataBind();

			MyDv2=myBook.GetBookTop10();
			dg_Book10.DataSource=MyDv2;
			dg_Book10.DataBind();


		}
		#region Web Form Designer generated code
		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.ib_Login.Click += new System.Web.UI.ImageClickEventHandler(this.ib_Login_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void ib_Login_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			Hugo.BookShop.User user = new Hugo.BookShop.User();
			name = this.tb_Account.Text.Trim();
			user.Name = name;
			user.Password = this.tb_Password.Text.Trim();
			if(user.Login())
			{
				this.lblInfo2.Text = "Welcome,"+user.Name;
				try
				{
					user.GetUserInfo();
					id = user.ID;
					Session["UserName"] = name;
					Session["UserID"]   = id;

					if(Object.Equals(Request.Cookies["HugoShopBookLogin"],null))
					{
						CreateCookie();
						ShowInfo();
					}
					else
					{
						ShowInfo();
						UpdateCookie();
					}
					Page.RegisterStartupScript("refresh","<script language=javascript>parent.top.history.go(0);</script>");
				}
				catch(Exception ex)
				{
					this.lblInfo.Text = "Get your information FAILED!" + ex.Message;
				}
			}
			else
			{
				this.lblInfo.Text = "Login FAILED!";
			}
		}


		#region Functions for manipulating cookie
		/// <summary>
		/// Create new cookie named HugoShopBookLogin
		/// </summary>
		private void CreateCookie()
		{
			HttpCookie cookie = new HttpCookie("HugoShopBookLogin");
			string now = DateTime.Now.ToString();					
			string ip = Request.UserHostAddress;
//			if(this.chkRemember.Checked)
//			{
//				cookie.Values.Add("Password",Functions.DecryptCookie(this.tb_Password.Text));
//			}

			//Set the sum value of all the cookies to "Value"
			System.Text.StringBuilder sb = new System.Text.StringBuilder();
			sb.Append(name);
			sb.Append("#");
			sb.Append(id.ToString());
			sb.Append("#");
			sb.Append(now);
			sb.Append("#");
			sb.Append("1");
			sb.Append("#");
			sb.Append(ip);
			int seal = Sum(sb.ToString());
			sb.Append("#");
			sb.Append(seal.ToString());

			Random rnd = new Random();
			int type = rnd.Next(0,9999);
			cookie.Values.Add("Value",type.ToString());

			cookie.Values.Add("BookShop",Functions.EncryptCookie(sb.ToString(),type));

			cookie.Expires = DateTime.MaxValue;
			Response.AppendCookie(cookie);
		}


		/// <summary>
		/// Get cookie
		/// </summary>
		/// <param name="name">return user name</param>
		private void GetCookie(out string name)
		{
			HttpCookie cookie = Request.Cookies["HugoShopBookLogin"];

			int type = int.Parse(cookie.Values["Value"].ToString());
			string bookShopCookie = Functions.DecryptCookie(cookie.Values["BookShop"].ToString(),type);
			string [] myCookie = new String[10];
			myCookie = bookShopCookie.Split('#');

			name = myCookie[0];
			string id = myCookie[1];
			string now = myCookie[2];
			string times = myCookie[3];
			string ip = myCookie[4];
			string seal = myCookie[5];

			if(Request.UserHostAddress != ip)
			{
				name = "";
				return;
			}

			//check the sum value
			System.Text.StringBuilder sb = new System.Text.StringBuilder();
			sb.Append(name);
			sb.Append("#");
			sb.Append(id.ToString());
			sb.Append("#");
			sb.Append(now);
			sb.Append("#");
			sb.Append(times);
			sb.Append("#");
			sb.Append(ip);
			if(Sum(sb.ToString()) != int.Parse(seal))
			{
				name = "";
			}


			return;			
		}




		/// <summary>
		/// Get city
		/// </summary>
		/// <returns>city name</returns>
		private string GetCityCookie()
		{
			try
			{
				HttpCookie cookie = Request.Cookies["HugoShopBookCity"];
				return cookie.Values["City"].ToString();	
			}
			catch
			{
				return "";
			}
		}



		/// <summary>
		/// Get the last visitted time and visitted times
		/// </summary>
		/// <param name="lastTime"></param>
		/// <param name="times"></param>
		private void GetVisitInfo(out string lastTime,out string times)
		{
			HttpCookie cookie = Request.Cookies["HugoShopBookLogin"];
			int type = int.Parse(cookie.Values["Value"].ToString());
			string bookShopCookie = Functions.DecryptCookie(cookie.Values["BookShop"].ToString(),type);
			string [] myCookie = new String[10];
			myCookie = bookShopCookie.Split('#');

			lastTime = myCookie[2];
			times = myCookie[3];
		}


		/// <summary>
		/// Update cookie
		/// </summary>
		private void UpdateCookie()
		{
			HttpCookie cookie = new HttpCookie("HugoShopBookLogin");
			HttpCookie oldCookie = Request.Cookies["HugoShopBookLogin"];
			int type = int.Parse(oldCookie.Values["Value"].ToString());
			string bookShopCookie = Functions.DecryptCookie(oldCookie.Values["BookShop"].ToString(),type);

			string now = DateTime.Now.ToString();					
			string ip = Request.UserHostAddress;
			//			if(this.chkRemember.Checked)
			//			{
			//				cookie.Values.Add("Password",Functions.DecryptCookie(this.tb_Password.Text));
			//			}

			//Set the sum value of all the cookies to "Value"
			System.Text.StringBuilder sb = new System.Text.StringBuilder();
			sb.Append(name);
			sb.Append("#");
			sb.Append(id.ToString());
			sb.Append("#");
			sb.Append(now);
			sb.Append("#");

			string [] myCookie = new String[10];
			myCookie = bookShopCookie.Split('#');
			int i = int.Parse(myCookie[3])+1;

			sb.Append(i.ToString());
			sb.Append("#");
			sb.Append(ip);
			int seal = Sum(sb.ToString());
			sb.Append("#");
			sb.Append(seal.ToString());

			Random rnd = new Random();
			type = rnd.Next(0,9999);
			cookie.Values.Add("Value",type.ToString());

			cookie.Values.Add("BookShop",Functions.EncryptCookie(sb.ToString(),type));

			cookie.Expires = DateTime.MaxValue;
			Response.AppendCookie(cookie);
		}


		/// <summary>
		/// Show visit information
		/// </summary>
		private void ShowInfo()
		{
			this.Panel1.Visible = false;
			this.Panel2.Visible = true;

			string time,times;
			GetVisitInfo(out time,out times);
			this.lblDate.Text = time.ToString();
			this.lblTimes.Text = times.ToString();

			string city = this.GetCityCookie();
			if(city=="")
			{
				this.hlCity.NavigateUrl = "EnterCity.aspx";
			}
			else
			{
				this.hlCity.NavigateUrl = "";
				this.hlCity.Text = "From:" + city;
				this.hlCity.ForeColor= Color.Black;
			}
		}


		//sum
		private int Sum(string str)
		{
			uint sum=0;//,i=0;
			foreach(char a in str)
			{
//				if(i%2==1)//even order number
//				{
//					
//				}	
//				i++;
				sum += a;
				if(sum>65535)//control the max value
				{
					sum &= 0x0ffff;
				}
			}

			return (int)sum;
		}
		#endregion
	}
}