productdisplay.aspx.cs

商业源码

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.OleDb;

namespace SCard
{
	/// <summary>
	/// productDisplay 的摘要说明。
	/// </summary>
	public class productDisplay : System.Web.UI.Page
	{
        protected System.Web.UI.WebControls.Label lblDaohang;
        protected System.Web.UI.WebControls.Repeater CRepeater;
        protected System.Web.UI.WebControls.Repeater HotRepeater;
        protected System.Web.UI.WebControls.Label lblPName;
        protected System.Web.UI.WebControls.Label lblPFPrice;
        protected System.Web.UI.WebControls.Label lblPNPrice;

        public string strPID="-1";
		public string strPName=string.Empty;
        public string strPBewrite = "";//商品简介  
        public string strPUseMode = "";//使用说明
        public string strPValidity = "";
        protected System.Web.UI.WebControls.DropDownList ddlClass;
        protected System.Web.UI.WebControls.TextBox txtSelect;
        protected System.Web.UI.WebControls.Button btnSelect;//有效期

        public string strBuy = "";//打印在线购买 或 没有存货
        
    
		private void Page_Load(object sender, System.EventArgs e)
		{
            if( !IsPostBack )
            {
                if(Request.QueryString["id"]!=null)
                {
                    string strID = Request.QueryString["id"].ToString();
                    strID = CleanString.htmlInputText( strID );
                    
                    DBConn myDB = new DBConn();
                    string sql = "select * from products where PID=" + strID;
                    OleDbDataReader dr;
                    try
                    {
                        dr = myDB.getDataReader( sql );
                    }
                    catch
                    {
                        Response.Write("<script>");
                        Response.Write("alert('没有这个商品!!!');");
                        Response.Write("</script>");
                        Response.Redirect("index.aspx");
                        return;
                    }

                    if( dr.Read() )
                    {
                        ViewState["CID"] = dr["CID"].ToString();
                    }
                    else
                    {
                        Response.Write("<script>");
                        Response.Write("alert('没有这个商品!!!');");
                        Response.Write("</script>");
                        dr.Close();
                        myDB.Close();
                        Response.Redirect("index.aspx");
                        return;
                    }
                    dr.Close();
                    myDB.Close();

                    ViewState["ID"] = strID;


                }

                CData();
                HData();
                DHData();

                PData();

                setSelectClass();//绑定 类别选框
            }
		}

        private void setSelectClass()//绑定 类别选框
        {
            DBConn myDB = new DBConn();
            string mySql = "select CID,CName from Category order by CID desc";
            ddlClass.DataSource  = myDB.getDataReader( mySql );
            ddlClass.DataTextField = "CName";
            ddlClass.DataValueField = "CID";
            ddlClass.DataBind();
            myDB.Close();
            
            ddlClass.Items.Insert(0,new ListItem("所有分类","-1"));
        }

        private void PData()//显示相应商品信息
        {
            string strID = ViewState["ID"].ToString();

            DBConn myDB = new DBConn();
            string sql = "select * from Products where PID=" + strID;
            OleDbDataReader dr = myDB.getDataReader( sql );
            if( dr.Read() )
            {
                strPID = dr["PID"].ToString();
                lblPName.Text = dr["PName"].ToString();
				strPName = lblPName.Text;//
                lblPFPrice.Text = double.Parse(dr["PFPrice"].ToString()).ToString("f2");
                lblPNPrice.Text = double.Parse(dr["PNPrice"].ToString()).ToString("f2");
                strPBewrite = dr["PBewrite"].ToString();  
                strPUseMode = dr["PUseMode"].ToString();
                strPValidity = dr["PValidity"].ToString();
                string strPStock = dr["PStock"].ToString();
                if( Int32.Parse(strPStock) > 0 )
                {
                    strBuy = "<img src='images/car.gif'> [ <A target=_blank href='makeOrder.aspx?id=" + strPID + "'>在线购买</A> ]";
                }
                else
                {
                    strBuy = "[ 没有存货 ]";
                }
            }
            dr.Close();
            myDB.Close();
        }

        private void CData()//分类列表绑定
        {
            DBConn myDB = new DBConn();
            string sql = "select * from Category";
            CRepeater.DataSource = myDB.getDataReader( sql );
            CRepeater.DataBind();
            myDB.Close();
        }

        private void DHData()//导航条设置
        {
            string strCID = ViewState["CID"].ToString();

            if( ViewState["CID"] == null || ViewState["CID"].ToString() == String.Empty )
            {
                lblDaohang.Text = "所有商品";
            }
            else
            {
                DBConn myDB = new DBConn();
                string sql = "select * from Category where CID=" + strCID;
                OleDbDataReader dr = myDB.getDataReader( sql );
                if( dr.Read() )
                {
                    lblDaohang.Text = dr["CName"].ToString();
                }
                dr.Close();
                myDB.Close();
            }

            //lblDaohang.Text += ;
        }

        private void HData()//分类对应的热销商品列表绑定
        {
            if( ViewState["CID"] == null || ViewState["CID"].ToString() == String.Empty )
            {
                DBConn myDB = new DBConn();
                string sql = "SELECT TOP 10 * FROM Products WHERE PSellNum>0 ORDER BY PSellNum DESC,PID";
                HotRepeater.DataSource = myDB.getDataReader( sql );
                HotRepeater.DataBind();
                myDB.Close();
            }
            else
            {
                string strCID = ViewState["CID"].ToString();

                DBConn myDB = new DBConn();
                string sql = "select top 10 * from Products where PSellNum>0 and CID=" + strCID + " order by PSellNum desc,PID";
                HotRepeater.DataSource = myDB.getDataReader( sql );
                HotRepeater.DataBind();
                myDB.Close();
            }
            
        }

		#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.btnSelect.Click += new System.EventHandler(this.btnSelect_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

        private void btnSelect_Click(object sender, System.EventArgs e)
        {
            string strClass = ddlClass.SelectedValue;
            string strText = Server.UrlEncode( txtSelect.Text );

            Response.Redirect("Select.aspx?class=" + strClass + "&text=" + strText);
        }
	}
}