如何使用asp.net web页面自定义分页控件？

namespace Web
{
public delegate void GoToPage(int PageNum);

public partial class TurnPage : System.Web.UI.UserControl
{
 private GoToPage _GoToPage = null;

 protected void Page_Load(object sender, EventArgs e)
 {

 }

 public void InitControl(GoToPage GP)
 {
  _GoToPage = GP;
 }


 public int DataCount
 {
  get { return Int32.Parse(lbl_TotalCount.Text); }
  set { lbl_TotalCount.Text = value.ToString(); }
 }

 public int CurrPageNum
 {
  get { return Int32.Parse(lbl_CurrPage.Text); }
  set { lbl_CurrPage.Text = value.ToString(); }
 }

 public int TotalPageNum
 {
  get { return Int32.Parse(lbl_TotalPage.Text); }
  set { lbl_TotalPage.Text = value.ToString(); }
 }

 public int PageSize
 {
  get { return Int32.Parse(ddl_PageSize.SelectedValue); }
 }

 protected void btn_FristPage_Click(object sender, EventArgs e)
 {
  _GoToPage(1);
 }

 protected void btn_PrevPage_Click(object sender, EventArgs e)
 {
  if (int.Parse(lbl_CurrPage.Text) > 1)
   _GoToPage(int.Parse(lbl_CurrPage.Text) - 1);
  else
   _GoToPage(1);
 }

 protected void btn_NextPage_Click(object sender, EventArgs e)
 {
  if (int.Parse(lbl_CurrPage.Text) < int.Parse(lbl_TotalPage.Text))
   _GoToPage(int.Parse(lbl_CurrPage.Text) + 1);
  else
   _GoToPage(int.Parse(lbl_TotalPage.Text));
 }

 protected void btn_LastPage_Click(object sender, EventArgs e)
 {
  _GoToPage(int.Parse(lbl_TotalPage.Text));
 }

 public void ControlButtonClick()
 {
  if (DataCount > 0)
  {
   btn_FristPage.Enabled = true;
   btn_PrevPage.Enabled = true;
   btn_LastPage.Enabled = true;
   btn_NextPage.Enabled = true;
  }
  else
  {
   btn_FristPage.Enabled = false;
   btn_PrevPage.Enabled = false;
   btn_LastPage.Enabled = false;
   btn_NextPage.Enabled = false;
  }



  if (CurrPageNum == 1)
  {
   btn_FristPage.Enabled = false;
   btn_PrevPage.Enabled = false;
  }

  if (CurrPageNum == TotalPageNum)
  {
   btn_LastPage.Enabled = false;
   btn_NextPage.Enabled = false;
  }

  if (CurrPageNum == 0)
  {
   btn_FristPage.Enabled = false;
   btn_PrevPage.Enabled = false;
   btn_LastPage.Enabled = false;
   btn_NextPage.Enabled = false;
  }
 }

 protected void ddl_PageSize_SelectedIndexChanged(object sender, EventArgs e)
 {
  _GoToPage(1);
 }

 protected void btn_GO_Click(object sender, EventArgs e)
 {
  int pageNum;
  if (int.TryParse(txt_PageNum.Text, out pageNum))
  {
   if (pageNum > TotalPageNum)
    _GoToPage(TotalPageNum);
   else if (pageNum < 1)
    _GoToPage(1);
   else
    _GoToPage(pageNum);
  }

 }
}}