asp.net web页面自定义分页控件使用详解

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);
    }

  }
}}