advancedsearch.aspx.cs

网上书店

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>
	/// AdvancedSearch 的摘要说明。
	/// </summary>
	public class AdvancedSearch : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.HyperLink HyperLink1;
		protected System.Web.UI.WebControls.TextBox tbx_bid;
		protected System.Web.UI.WebControls.TextBox tbx_bname;
		protected System.Web.UI.WebControls.TextBox tbx_bauthor;
		protected System.Web.UI.WebControls.TextBox tbx_bisbn;
		protected System.Web.UI.WebControls.TextBox tbx_bpress;
		protected System.Web.UI.WebControls.Button btn_search;
		protected System.Web.UI.WebControls.DropDownList ddl_bgroup;
		protected System.Web.UI.WebControls.DataGrid dgd_booklist;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(!IsPostBack) BindGrid();
		}

		#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_search.Click += new System.EventHandler(this.btn_search_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion


		public void DataGrid_Page(Object sender,DataGridPageChangedEventArgs E)
		{
			dgd_booklist.CurrentPageIndex =E.NewPageIndex ;
			BindGrid();
		}
		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);
			//创建带筛子的SQL语句
			string mysql="select * from book,bookprice where book.bid=bookprice.ppid";
			//对控建进行筛选
			if (tbx_bid.Text .ToString ()!="")//如果“书号”有输入
			{
				mysql=mysql+" and bid="+Convert.ToInt16 (tbx_bid.Text .ToString ());
			}
			if (tbx_bname.Text .ToString ()!="")//如果“书名”有输入
			{
				mysql=mysql+" and bname like '%"+tbx_bname.Text .ToString ()+"%'";
			}
			if (tbx_bauthor.Text .ToString ()!="")//如果“书作者”有输入
			{
				mysql=mysql+" and bauthor like '%"+tbx_bauthor.Text .ToString ()+"%'";
			}
			if (tbx_bisbn.Text .ToString ()!="")//如果“书ISBN”有输入
			{
				mysql=mysql+" and bisbn='"+tbx_bisbn.Text .ToString ()+"'";
			}
			if (tbx_bpress.Text .ToString ()!="")//如果“书出版社”有输入
			{
				mysql=mysql+" 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
			{
				mysql=mysql+" and bgroup="+Convert.ToInt16 (ddl_bgroup.SelectedItem .Value .ToString ());
			}
			//创建SqlDataAdapter对象,调用视图
			SqlDataAdapter da=new SqlDataAdapter (mysql,cn);
			//创建并填充DataSet
			DataSet ds=new DataSet ();
			da.Fill (ds);
			dgd_booklist.DataSource =ds;
			dgd_booklist.DataBind ();
			cn.Close ();
		}

		private void btn_search_Click(object sender, System.EventArgs e)
		{
			BindGrid();
		}
	}
}