sellcount.aspx.cs

在书店系统,access数据库和.net

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>
	/// SellCount 的摘要说明。
	/// </summary>
	public class SellCount : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox tbx_bpress;
		protected System.Web.UI.WebControls.DropDownList ddl_yearfrom;
		protected System.Web.UI.WebControls.DropDownList ddl_monthfrom;
		protected System.Web.UI.WebControls.DropDownList ddl_dayfrom;
		protected System.Web.UI.WebControls.DropDownList ddl_yearto;
		protected System.Web.UI.WebControls.DropDownList ddl_monthto;
		protected System.Web.UI.WebControls.DropDownList ddl_dayto;
		protected System.Web.UI.WebControls.Button btn_statistic;
		protected System.Web.UI.WebControls.DataGrid dgd_count;
		protected System.Web.UI.WebControls.HyperLink hlk_bookmanage;
		protected System.Web.UI.WebControls.HyperLink hlk_userlist;
		protected System.Web.UI.WebControls.HyperLink hlk_default;
		protected System.Web.UI.WebControls.Label lbl_count;
		protected System.Web.UI.WebControls.TextBox tbx_bname;
		protected System.Web.UI.WebControls.TextBox tbx_bauthor;
		protected System.Web.UI.WebControls.DropDownList ddl_bgroup;
	
		private void Page_Load(object sender, System.EventArgs e)
		{	//判断用户是否为合法用户
			try
			{
				if(Session["UPower"].ToString ()=="1") ;
			}
			catch
			{
				Response.Write ("您不是合法用户，请登入后再操作，<a href='default.aspx'>返回</a>");
				Response.End ();
			}
			if(!IsPostBack)
			{
				BindGrid();
				BindLabel();
			}
		}
		public void BindGrid()
		{	//从文件Web.config中读取连接字符串
			string strconn= ConfigurationSettings.AppSettings["dsn"];
			//连接本地计算机的BMS数据库
			SqlConnection cn= new SqlConnection (strconn);
			//创建最初选择语句
			string orderstate="SELECT BID,BISBN,BName,BAuthor,BPress,PPrice,PDiscount,OID,OBID,OUID,OQuantity,OBuy,PPrice*PDiscount*0.1  nowprice,PPrice*PDiscount*OQuantity*0.1 allprice FROM Book,BookPrice,Orders WHERE orders.obid=book.bid and orders.obid=bookprice.ppid 	and orders.obuy=1";
			if (tbx_bname.Text .ToString ()!="")//如果“书名”有输入
			{
				orderstate=orderstate+" and bname like '%"+tbx_bname.Text .ToString ()+"%'";
			}
			if (tbx_bauthor.Text .ToString ()!="")//如果“书作者”有输入
			{
				orderstate=orderstate+" and bauthor like '%"+tbx_bauthor.Text .ToString ()+"%'";
			}
			if (tbx_bpress.Text .ToString ()!="")//如果“书出版社”有输入
			{
				orderstate=orderstate+" and bpress like '%"+tbx_bpress.Text .ToString ()+"%'";
			}
			if (ddl_bgroup.SelectedItem .Value .ToString ()!="-1")//如果“书类型”有输入,-1为未选
			{
				orderstate=orderstate+" and bgroup="+Convert.ToInt16 (ddl_bgroup.SelectedItem .Value .ToString ());
			}
			//读取时间纪录
			string datefrom=ddl_yearfrom.SelectedItem .Value .ToString ()+"-"+ddl_monthfrom.SelectedItem .Value .ToString ()+"-"+ddl_dayfrom.SelectedItem .Value .ToString ();
			string dateto=ddl_yearto.SelectedItem .Value .ToString ()+"-"+ddl_monthto.SelectedItem .Value .ToString ()+"-"+ddl_dayto.SelectedItem .Value .ToString ();
			orderstate=orderstate+" and obuydate between '"+datefrom +"'and'"+dateto+"'";
			//创建SqlDataAdapter对象,调用视图
			SqlDataAdapter da=new SqlDataAdapter (orderstate,cn);
			//创建并填充DataSet
			DataSet ds=new DataSet ();
			da.Fill (ds);
			dgd_count.DataSource =ds;
			dgd_count.DataBind ();
			cn.Close ();
		}
		//绑定所预购图书总和到lbl_count上
		public void BindLabel()
		{	//从文件Web.config中读取连接字符串
			string strconn= ConfigurationSettings.AppSettings["dsn"];
			//连接本地计算机的BMS数据库
			SqlConnection cn= new SqlConnection (strconn);
			cn.Open ();
			//创建读取当前用户预购商品的价格总和
			string ordersum="SELECT sum(PPrice*PDiscount*OQuantity*0.1) ordersum FROM Book,BookPrice,Orders WHERE orders.obid=book.bid and orders.obid=bookprice.ppid 	and orders.obuy=1";
			if (tbx_bname.Text .ToString ()!="")//如果“书名”有输入
			{
				ordersum=ordersum+" and bname like '%"+tbx_bname.Text .ToString ()+"%'";
			}
			if (tbx_bauthor.Text .ToString ()!="")//如果“书作者”有输入
			{
				ordersum=ordersum+" and bauthor like '%"+tbx_bauthor.Text .ToString ()+"%'";
			}
			if (tbx_bpress.Text .ToString ()!="")//如果“书出版社”有输入
			{
				ordersum=ordersum+" and bpress like '%"+tbx_bpress.Text .ToString ()+"%'";
			}
			if (ddl_bgroup.SelectedItem .Value .ToString ()!="-1")//如果“书类型”有输入,-1为未选
			{
				ordersum=ordersum+" and bgroup="+Convert.ToInt16 (ddl_bgroup.SelectedItem .Value .ToString ());
			}
			//读取时间纪录
			string datefrom=ddl_yearfrom.SelectedItem .Value .ToString ()+"-"+ddl_monthfrom.SelectedItem .Value .ToString ()+"-"+ddl_dayfrom.SelectedItem .Value .ToString ();
			string dateto=ddl_yearto.SelectedItem .Value .ToString ()+"-"+ddl_monthto.SelectedItem .Value .ToString ()+"-"+ddl_dayto.SelectedItem .Value .ToString ();
			ordersum=ordersum+" and obuydate between '"+datefrom +"'and'"+dateto+"'";
			SqlCommand cm=new SqlCommand (ordersum,cn);
			SqlDataReader dr =cm.ExecuteReader ();
			dr.Read ();
			if (dr["ordersum"].ToString ()=="")
				lbl_count.Text ="0";
			else 
				lbl_count.Text=dr["ordersum"].ToString ();
			cn.Close ();
		}

		


		private void btn_statistic_Click(object sender, System.EventArgs e)
		{
			BindGrid();
			BindLabel();
		
		}
		#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.btn_statistic.Click += new System.EventHandler(this.btn_statistic_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
	}
}