default.aspx.cs

.net环境下开发的,很好哦,这是我门最近做的一个电子商务的作业 实现了很多功能,是典型的C2C模式,很有利用价值,大家下载了多给我提意见

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.SqlClient;
namespace secondhand
{
	/// <summary>
	/// _default 的摘要说明。
	/// </summary>
	public class _default : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.ImageButton ImageButton1;
		protected System.Web.UI.WebControls.ImageButton ImageButton2;
		protected System.Web.UI.WebControls.ImageButton ImageButton3;
		protected System.Web.UI.WebControls.ImageButton ImageButton4;
		protected System.Web.UI.WebControls.Button Button3;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.Button Button2;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.TextBox TextBox2;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.TextBox TextBox1;
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Panel Panel1;
		protected System.Web.UI.WebControls.ImageButton ImageButton5;
		public  int isLogin=0;
		private void Page_Load(object sender, System.EventArgs e)
		{
			
				
			 isLogin=Convert.ToInt32(Request.QueryString["isLogin"]);
			// 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.ImageButton1.Click += new System.Web.UI.ImageClickEventHandler(this.ImageButton1_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void ImageButton1_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			Server.Transfer("default.aspx");
		}

		private void ImageButton2_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			Server.Transfer("mybuy.aspx");
		}

		private void ImageButton3_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
				if( Session["ID"]==null||Session["pwd"]==null)
		 
			 Response.Write ("<script>alert(\"请先登陆！\");</script>");
			else
			 Server.Transfer("myyigo.aspx");
		
		}

		private void ImageButton4_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			if( Session["ID"]==null||Session["pwd"]==null)
		 
				Response.Write ("<script>alert(\"请先登陆！\");</script>");
			else
				Server.Transfer("myyigo.aspx");
			
		}

		private void ImageButton5_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
				if( Session["ID"]==null||Session["pwd"]==null)
		 
			 Response.Write ("<script>alert(\"请先登陆！\");</script>");
		 else
			 Server.Transfer("myyigo.aspx");
		 
		}

		private void TextBox1_TextChanged(object sender, System.EventArgs e)
		{
		
		}

		private void Button1_Click(object sender, System.EventArgs e)
		{
			
			string ID=TextBox1.Text;
			string pwd=TextBox2.Text;
			string ec_Data = 
				"Server=(local);"+
				"uid=sa;pwd=sa;"+
				"database=ec";
			SqlConnection conn = 
				new SqlConnection(ec_Data);
			conn.Open();
			SqlCommand cmd = 
				new SqlCommand( "SELECT * FROM  userInfo WHERE userID='"+ID+"'and pwd='"+pwd+"'", conn );
			SqlDataReader dr=cmd.ExecuteReader();
			if(dr.Read())
			{
				Session["ID"]=ID;
				Session["pwd"]=pwd;
				Label3.Visible=true;
				Label3.Text="欢迎你来到易购网!";
				if(this.isLogin==0)
				{
					Panel1.Visible=false;
					this.isLogin=1;
				}
				Button3.Visible=true;
			}
			else 
			{
					conn.Close();
				conn.Open();
				SqlCommand cmd1 = 
					new SqlCommand( "SELECT * FROM  adminInfo WHERE adminID='"+ID+"'and pwd='"+pwd+"'", conn );
				SqlDataReader dr1=cmd1.ExecuteReader();	
				if(dr1.Read())

				{
					Session["ID"]=ID;
					Session["pwd"]=pwd;
					Server.Transfer("admin.aspx");
				
				}
				else
				{
					Response.Write ("<script>alert(\"用户名或密码出错,单击重新填写！\");</script>");
					TextBox1.Text="";
					TextBox2.Text="";
				}
          
			}
			
		}

		private void Button2_Click(object sender, System.EventArgs e)
		{
			Server.Transfer("regist.aspx");
		}

		private void Button3_Click(object sender, System.EventArgs e)
		{
			Session["ID"]=null;
			Session["pwd"]=null;
			Label3.Visible=false;
			Panel1.Visible=true;
			Button3.Visible=false;
			TextBox1.Text="";
		}
	}
}