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 的摘要說明。
	/// </summary>
	public partial class AdvancedSearch : System.Web.UI.Page
	{
	
		protected void Page_Load(object sender, System.EventArgs e)
		{
			if(!IsPostBack) BindGrid();
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN：該調用是 ASP.NET Web 窗體設計器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
		/// 此方法的內容。
		/// </summary>
		private void InitializeComponent()
		{    

		}
		#endregion


		public void DataGrid_Page(Object sender,DataGridPageChangedEventArgs E)
		{
			dgd_booklist.CurrentPageIndex =E.NewPageIndex ;
			BindGrid();
		}
		public void BindGrid()
		{	//從文件Web.config中讀取連接字符串
			string strconn= ConfigurationSettings.AppSettings["dsn"];
			//連接本地計算機的LMS數據庫
			SqlConnection cn= new SqlConnection (strconn);
			//創建帶篩子的SQL語句
			string mysql="select * from book where 1=1";
			//對控建進行篩選
			if (tbx_bid.Text .ToString ()!="")//如果“書號”有輸入
			{
			try
				{
				 mysql=mysql+" and bid="+Convert.ToInt32 (tbx_bid.Text .ToString ());
				}
			 catch
				{	
				Response.Write ("書號輸入有誤!");
				Response.End();
				}
			}
			if (tbx_bname.Text .ToString ()!="")//如果“書名”有輸入
			{
				mysql=mysql+" and bname like '%"+tbx_bname.Text .ToString ()+"%'";
			}
			if (tbx_bauthor.Text .ToString ()!="")//如果“書作者”有輸入
			{
				mysql=mysql+" and bauthor like '%"+tbx_bauthor.Text .ToString ()+"%'";
			}
			if (tbx_bisbn.Text .ToString ()!="")//如果“書ISBN”有輸入
			{
				mysql=mysql+" and bisbn='"+tbx_bisbn.Text .ToString ()+"'";
			}
			if (tbx_bpress.Text .ToString ()!="")//如果“書出版社”有輸入
			{
				mysql=mysql+" and bpress like '%"+tbx_bpress.Text .ToString ()+"%'";
			}
			if (tbx_btheme.Text .ToString ()!="")//如果“主題詞”有輸入
			{
				mysql=mysql+" and btheme like '%"+tbx_btheme.Text .ToString ()+"%'";
			}
			//創建SqlDataAdapter對象,調用視圖
			SqlDataAdapter da=new SqlDataAdapter (mysql,cn);
			//創建并填充DataSet
			DataSet ds=new DataSet ();
			da.Fill (ds);
			dgd_booklist.DataSource =ds;
			dgd_booklist.DataBind ();
			cn.Close ();
		}

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