using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace SampleCS
{
	/// <summary>
	/// °í±ÞÆäÀÌ¡Å×½ºÆ®¿¡ ´ëÇÑ ¿ä¾à ¼³¸íÀÔ´Ï´Ù.
	/// </summary>
	public class °í±ÞÆäÀÌ¡Å×½ºÆ® : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.DataGrid DataGrid1;
		protected int intPage = 0;//°í±Þ2 : ¸î¹ø° ÆäÀÌÁö¸¦ º¸¿©ÁÙ°ÇÁö	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(!Page.IsPostBack)
			{
				this.DataGrid1.VirtualItemCount = 10000;//°í±Þ1
				ReadData();
			}
		}

		private void ReadData()
		{
			SqlConnection objCon = new SqlConnection(
				"server=(local);database=Sample;uid=Sample;pwd=Sample");
			objCon.Open();
			SqlCommand objCmd = new SqlCommand();
			objCmd.Connection = objCon;
			//30 -> " + º¯¼ö + "
			objCmd.CommandText = 
				"Select Top 10 Num From PagingTest Where Num Not In (Select Top " + intPage*10 + " Num From PagingTest Order By Num Desc) Order By Num Desc";//°í±Þ3
			objCmd.CommandType = CommandType.Text;
			SqlDataAdapter objDa = new SqlDataAdapter();
			objDa.SelectCommand = objCmd;
			DataSet objDs = new DataSet();
			objDa.Fill(objDs, "PagingTest");
			this.DataGrid1.DataSource = objDs;
			this.DataGrid1.DataBind();
		}

		#region Web Form µðÀÚÀ̳ʿ¡¼­ »ý¼ºÇÑ ÄÚµå
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: ÀÌ È£ÃâÀº ASP.NET Web Form µðÀÚÀ̳ʿ¡ ÇÊ¿äÇÕ´Ï´Ù.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// µðÀÚÀÌ³Ê Áö¿ø¿¡ ÇÊ¿äÇÑ ¸Þ¼­µåÀÔ´Ï´Ù.
		/// ÀÌ ¸Þ¼­µåÀÇ ³»¿ëÀ» ÄÚµå ÆíÁý±â·Î ¼öÁ¤ÇÏÁö ¸¶½Ê½Ã¿À.
		/// </summary>
		private void InitializeComponent()
		{    
			this.DataGrid1.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_PageIndexChanged);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void DataGrid1_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
		{
			intPage = e.NewPageIndex;//°í±Þ4
			this.DataGrid1.CurrentPageIndex = e.NewPageIndex;
			ReadData();
		}
	}
}