bookdetail.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>
	/// BookDetail 
	/// </summary>
	public partial class BookDetail : System.Web.UI.Page
	{
	
		protected void Page_Load(object sender, System.EventArgs e)
		{
			//from Web.configread the connection
			string strconn = "server=ABUOSAMA; uid=sa; database=BMS";
			//connect the computer with bms database
			SqlConnection cn= new SqlConnection (strconn);
            //Create corresponding inquiries bibliographic information sql statement 
			string mysql="select * from book,bookprice where book.bid=bookprice.ppid and book.bid=@bid";
			//create SqlCommand
			SqlCommand cm=new SqlCommand (mysql,cn);
            //Set up parameters and add value 
			cm.Parameters .Add ("@BID", SqlDbType.Int );
			cm.Parameters ["@BID"].Value =Request.QueryString [0];
			//open the connection
			cn.Open ();
			// run ExecuteReader
			SqlDataReader dr=cm.ExecuteReader ();
            if (dr.Read())//Data is read out, that is matching users 
			{
				//for Label binding
				lbl_bid.Text =dr["bid"].ToString ();
				tbx_bname.Text =dr["bname"].ToString ();
				tbx_bisbn.Text =dr["bisbn"].ToString ();
				tbx_bauthor.Text =dr["bauthor"].ToString ();
				tbx_bpress.Text =dr["bpress"].ToString ();
				tbx_pprice.Text =dr["pprice"].ToString ();
				tbx_pdiscount.Text  =dr["pdiscount"].ToString ();
				if(dr["bgroup"].ToString ()=="0") tbx_bgroup.Text ="Other";
				if(dr["bgroup"].ToString ()=="1") tbx_bgroup.Text ="Computer";
				if(dr["bgroup"].ToString ()=="2") tbx_bgroup.Text ="General Science";
				tbx_bdescribe.Text =dr["bdescribe"].ToString ();
				double pdiscount=Convert.ToInt32 (dr["pdiscount"].ToString ());
				double pprice=Convert.ToDouble (dr["pprice"].ToString ());
				tbx_nowprice.Text =Convert.ToString (pdiscount*pprice*0.1);
				cn.Close ();
			}
			
			else
			{
				Response.Write ("This book is not exist,plz return.");
				Response.End ();
			}
			
		}

		#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

		protected void btn_addorder_Click(object sender, System.EventArgs e)
		{
            //Using a judgment statement judge whether the user has logged in, If you did not sign Session[ "UID" ].ToString () would be abnormal operation 
			try//see if aliggal user
			{	Session["UID"].ToString ();
				//from Web.configread the connection
				string strconn = "server=ABUOSAMA; uid=sa; database=BMS";
				//string strconn= ConfigurationSettings.AppSettings["dsn"];
				//connect the bms database
				SqlConnection cn= new SqlConnection (strconn);
				cn.Open ();
				//create cm，for order table data opration
				SqlCommand cm=new SqlCommand ("orderadd",cn);
                //Installed memory type 
				cm.CommandType =CommandType.StoredProcedure ;
                //Add parameters 
				cm.Parameters .Add ("@OBID",SqlDbType.Int );
				cm.Parameters .Add ("@OUID",SqlDbType.VarChar );
				cm.Parameters .Add ("@OQuantity",SqlDbType.Int );
				cm.Parameters .Add ("@ODate",SqlDbType.DateTime );
                //Parameter values for pay 
				string obidvalue=lbl_bid.Text .ToString ();
				cm.Parameters ["@OBID"].Value =Convert.ToInt16 (obidvalue);
				cm.Parameters ["@OUID"].Value =Session["UID"];
				string oquantityvalue=ddl_oquantity.SelectedItem .Value .ToString ();
				cm.Parameters ["@OQuantity"].Value =Convert.ToInt16 (oquantityvalue);
				cm.Parameters ["@ODate"].Value =System.DateTime .Now;
				cm.ExecuteNonQuery ();
				cn.Close ();
				Response.Redirect ("orderstate.aspx");
			}
			//if not sing in
			catch
			{	lbl_message.Text ="you have not sing in ，plz return and sing in to use this opration";
			}
		}


	}
}