default.aspx.cs

book shop system how to sell and buy online

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.Configuration ;
using System.Data .SqlClient ;

namespace BMS
{
	/// <summary>
	/// _Default 
	/// </summary>
	public partial class _Default : System.Web.UI.Page
	{
	
		protected void Page_Load(object sender, System.EventArgs e)
		{	
			BindList();
		}
		#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()
		{    

		}
		#endregion
		public void BindList()
        {	//from the file Web.config Read connecting string 
			 string strconn = "server=ABUOSAMA; uid=sa; database=BMS";
			//connect the local computer's MMS database
			SqlConnection cn= new SqlConnection (strconn);
            //create the inquiry using the computer's type to get the last three books
			string sqlSortByC1="select top 3 * from book,bookprice where book.bid=bookprice.ppid and book.bgroup=1 order by bid desc";
			//create SqlDataAdapter,by calling the view
			SqlDataAdapter da1=new SqlDataAdapter (sqlSortByC1,cn);
			//create and fill the DataSet
			DataSet ds1=new DataSet ();
			da1.Fill (ds1);
			dlt_class1.DataSource =ds1;
			dlt_class1.DataBind ();
            //create the inquiry using the scince's type to get the last three books，by using the book id
			string sqlSortByC2="select top 3 * from book,bookprice where book.bid=bookprice.ppid and book.bgroup=2 order by bid desc";
            //create SqlDataAdapter,by calling the view
			SqlDataAdapter da2=new SqlDataAdapter (sqlSortByC2,cn);
            //create and fill the DataSet
			DataSet ds2=new DataSet ();
			da2.Fill (ds2);
			dlt_class2.DataSource =ds2;
			dlt_class2.DataBind ();
            //create the inquiry using the scince's type to get the last three books，by using the book id
			string sqlSortByC0="select top 3 * from book,bookprice where book.bid=bookprice.ppid and book.bgroup=0 order by bid desc";
            //create SqlDataAdapter,by calling the view
			SqlDataAdapter da0=new SqlDataAdapter (sqlSortByC0,cn);
            //create and fill the DataSet
			DataSet ds0=new DataSet ();
			da0.Fill (ds0);
			dlt_class0.DataSource =ds0;
			dlt_class0.DataBind ();
			cn.Close ();
		}

		protected void btn_submit_Click(object sender, System.EventArgs e)
        {	//from the file Web.config Read connecting string 
			string strconn = "server=ABUOSAMA; uid=sa; database=BMS";
            //connect the local computer's MMS database
			SqlConnection cn= new SqlConnection (strconn);
			cn.Open ();
			//Construction SQL statements, the statements in the Users table check user name and password is correct or no 
			string mysql= "select * from Users where Uid='"+tbx_uid.Text +"'and UPassword='"+tbx_upassword.Text +"'";
			//creat Command
			SqlCommand cm=new SqlCommand  (mysql,cn);
			//execution ExecuteReader ()
			SqlDataReader dr=cm.ExecuteReader ();
			if(dr.Read ())
			{
				lbl_message.Text= "";
				//save last user
				Session["uid"]=dr["uid"];
				Session["upower"]=dr["upower"];
				lbl_message.Text="Welcome: "+Session["uid"];
				if(Session["upower"].ToString ()=="1")				
				{	//administrator
					Response.Redirect ("bookmanage.aspx");
				}
				else
				{	//users 
				}
			}
			else
			{
					lbl_message.Text ="Sorry,incorrect user name and password,plz re enter";
			}
			//close the connection
			cn.Close();
		}

		protected void btn_search_Click(object sender, System.EventArgs e)
		{	//inter book information
			int varbid=Convert.ToInt16 (tbx_bid.Text .ToString ());
			Response.Redirect ("bookdetail.aspx?bid="+varbid);
		}


        protected void dlt_class1_SelectedIndexChanged(object sender, EventArgs e)
        {

        }
}
}