guestbook_list.aspx.cs

这是一个ASP.NET和数据库的程序

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.SqlClient;
using System.Text;
using System.IO;
using System.Configuration;
namespace baogelyb
{
	/// <summary>
	/// guestbook_list 的摘要说明。
	/// </summary>
	public class guestbook_list : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.DataGrid GonGaoGrid;
		protected Wuqi.Webdiyer.AspNetPager haha;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(Session["name"]==null||Session["name"].ToString()=="false")
			{
				Response.Redirect("fail.htm");
			}
			if(!this.IsPostBack)
			{
				SqlConnection objConnection=db.createconnection();
				SqlCommand objCommand=new SqlCommand("select count(*) from lyb",objConnection);
				objConnection.Open();
				haha.RecordCount=(int)objCommand.ExecuteScalar();
				objConnection.Close();
				BindGrid();
			}
		}


		protected void BindGrid()
		{
		
			//取得数据库路径
//			string dbPath=System.Configuration.ConfigurationSettings.AppSettings["lyb"];
//			//定义数据库连接字符串
//			string ACconnStr="Provider=Microsoft.Jet.Sql.4.0;Data Source="+Server.MapPath(dbPath);
			//创建数据库连接对像
			SqlConnection ACconn=db.createconnection();
			ACconn.Open();
			//定义SQL语句
			string ACsql="select * from lyb order by id desc";
			//定义数据适配器
			SqlDataAdapter ACda=new SqlDataAdapter(ACsql,ACconn);
			//创建数据集
			DataSet ACds=new DataSet();
			//从指定的索引开始取PageSize条记录
			ACda.Fill(ACds,haha.PageSize*(haha.CurrentPageIndex-1),haha.PageSize,"CurDataTable");
			//创建所有数集
			ACda.Fill(ACds,"AllDataTable");
			//设置DataGrid控件实际显示的项数
			GonGaoGrid.VirtualItemCount=ACds.Tables["AllDataTable"].Rows.Count;
			//数据绑定
			GonGaoGrid.DataSource=ACds.Tables["CurDataTable"];
			GonGaoGrid.DataBind();
			haha.CustomInfoText=" 共有留言<font color=\"blue\"><b>"+haha.RecordCount.ToString()+"</b></font>条";
			haha.CustomInfoText+=" 共有<font color=\"blue\"><b>"+haha.PageCount.ToString()+"</b></font>页";
			haha.CustomInfoText+=" 当前为第<font color=\"red\"><b>"+haha.CurrentPageIndex.ToString()+"</b></font>页";
			ACda.Dispose();
			ACconn.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.haha.PageChanged += new Wuqi.Webdiyer.PageChangedEventHandler(this.haha_PageChanged);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void haha_PageChanged(object src, Wuqi.Webdiyer.PageChangedEventArgs e)
		{
			haha.CurrentPageIndex=e.NewPageIndex;
			this.BindGrid();
		}
	}
}