写了个分页导航控件

        经常要用到分页，就自己用ASP.NET2.0随便写了个分页控件，暂时根据项目需要凑合着用下，不足之处切莫见笑
        我的控件直接从CompositeControl继承，不与数据列表控件如RepeaterList等绑定，默认从配置文件自动设置页面大小，从数据库读取当前记录总数，也能自己在初始化时进行设置，主要功能是设置自身导航界面的状态，向外提供该次分页的数据信息：记录总数、当前页码、页面总数、当前要绑定数据的起始记录号（与SQL Server 2005的ROW_NUMBER() OVER使用很方便），从而通过它的属性从外部读出数据绑定到任一可绑定数据控件，代码如下：

using  System;
using  System.Configuration;
using  System.Collections.Generic;
using  System.ComponentModel;
using  System.Text;
using  System.Web;
using  System.Data;
using  System.Data.SqlClient;
using  System.Web.UI;
using  System.Web.UI.WebControls;
using  Charly.DBUtility;    //  数据访问组件引用

namespace  Charly.WebControls
{
    /**//// <summary>
    /// 数据导航控件
    /// </summary>
    public class DataNavigator : CompositeControl
    {
        public delegate void PageIndexChangedEventHandler(DataNavigator dn); 

        private LinkButton lbFirstPage, lbPreviewPage, lbNextPage, lbLastPage;
        private TextBox txtPageIndex;
        private Label lblPageInfor;
        private Button btnGotoPage;

        /**//// <summary>
        /// 总记录数
        /// </summary>
        public int RecorderNumber
        {
            get
            {
                if (ViewState["RecorderNumber"] == null)
                {
                    ViewState["RecorderNumber"] = -1;
                }
                return Convert.ToInt32(ViewState["RecorderNumber"]);
            }
            set
            {
                ViewState["RecorderNumber"] = value;
            }
        }

        /**//// <summary>
        /// 当前数据显示单位，如文章则可设置为篇，图片则可设置为个
        /// </summary>
        public string ObjectQuantifier
        {
            get
            {
                return ViewState["ObjectQuantifier"].ToString();
            }
            set
            {
                ViewState["ObjectQuantifier"] = value;
            }
        }

        /**//// <summary>
        /// 当前数据显示名称，如文章，图片
        /// </summary>
        public string ObjectName
        {
            get
            {
                return ViewState["ObjectName"].ToString();
            }
            set
            {
                ViewState["ObjectName"] = value;
            }
        }

        /**//// <summary>
        /// 当前页码
        /// </summary>
        public int PageIndex
        {
            get
            {
                if (ViewState["PageIndex"] == null)
                {
                    ViewState["PageIndex"] = 1;
                }
                return Convert.ToInt32(ViewState["PageIndex"]);
            }
            set
            {
                ViewState["PageIndex"] = value;
            }
        }

        /**//// <summary>
        /// 页大小，即每页显示记录数
        /// </summary>
        public int PageSize
        {
            get
            {
                if (ViewState["PageSize"] == null)
                {
                    ViewState["PageSize"] = Convert.ToInt32(ConfigurationManager.AppSettings["UserPageSize"]);
                }
                return Convert.ToInt32(ViewState["PageSize"]);
            }
            set
            {
                ViewState["PageSize"] = value;
            }
        }

        /**//// <summary>
        /// 总页数
        /// </summary>
        public int PageNumber
        {
            get
            {
                return Convert.ToInt32(ViewState["PageNumber"]);
            }
            set
            {
                ViewState["PageNumber"] = value;
            }
        }

        /**//// <summary>
        /// 当前页面数据起始行号
        /// </summary>
        public int StartRowNumber
        {
            get
            {
                if (ViewState["StartRowNumber"] == null)
                {
                    ViewState["StartRowNumber"] = 1;
                }
                return Convert.ToInt32(ViewState["StartRowNumber"]);
            }
            set
            {
                ViewState["StartRowNumber"] = value;
            }
        }

        /**//// <summary>
        /// 当前页面数据结束行号
        /// </summary>
        public int EndRowNumber
        {
            get
            {
                if (ViewState["EndRowNumber"] == null)
                {
                    ViewState["EndRowNumber"] = PageSize;
                }
                return Convert.ToInt32(ViewState["EndRowNumber"]);
            }
            set
            {
                ViewState["EndRowNumber"] = value;
            }
        }

        /**//// <summary>
        /// 读取总记录数的表名，为默认读取总记录数提供支持，否则需要在外部设置总记录数
        /// </summary>
        public string TableName
        {
            get
            {
                return ViewState["TableName"].ToString();
            }
            set
            {
                ViewState["TableName"] = value;
            }
        }

        /**//// <summary>
        /// 读取总记录数的过滤条件，为默认读取总记录数提供支持，否则需要在外部设置总记录数
        /// </summary>
        public string Filter
        {
            get
            {
                if (ViewState["Filter"] == null)
                {
                    ViewState["Filter"] = string.Empty;
                }
                return ViewState["Filter"].ToString();
            }
            set
            {
                ViewState["Filter"] = value;
            }
        }

        /**//// <summary>
        /// 翻页事件定义
        /// </summary>
        public event PageIndexChangedEventHandler PageIndexChanged;


        /**//// <summary>
        /// 创建翻页子控件
        /// </summary>
        protected override void CreateChildControls()
        {
            lblPageInfor = new Label();
            this.Controls.Add(lblPageInfor);

            lbFirstPage = new LinkButton();
            lbFirstPage.Text = "首页";
            lbFirstPage.Click += new EventHandler(GotoFirstPage);
            lbFirstPage.EnableViewState = true;
            this.Controls.Add(lbFirstPage);

            lbPreviewPage = new LinkButton();
            lbPreviewPage.Text = "上页";
            lbPreviewPage.Click += new EventHandler(GotoPreviewPage);
            this.Controls.Add(lbPreviewPage);

            lbNextPage = new LinkButton();
            lbNextPage.Text = "下页";
            lbNextPage.Click += new EventHandler(GotoNextPage);
            this.Controls.Add(lbNextPage);

            lbLastPage = new LinkButton();
            lbLastPage.Text = "末页";
            lbLastPage.Click += new EventHandler(GotoLastPage);
            this.Controls.Add(lbLastPage);

            txtPageIndex = new TextBox();
            txtPageIndex.Attributes.Add("onkeyup", @"value=value.replace(/[^\d]/g,'');");
            txtPageIndex.Attributes.Add("onbeforepaste", @"clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d.]/g,''))");
            this.Controls.Add(txtPageIndex);

            btnGotoPage = new Button();
            btnGotoPage.Text = "GO";
            btnGotoPage.CommandName = "Go";
            btnGotoPage.Click += new EventHandler(GotoPageIndex);
            this.Controls.Add(btnGotoPage);

            base.CreateChildControls();
            SetNavigatorPage();
        }

        /**//// <summary>
        /// 转到首页
        /// </summary>
        protected void GotoFirstPage(object sender, EventArgs e)
        {
            if (PageIndexChanged != null)
            {
                PageIndex = 1;
                SetNavigatorPage();
                PageIndexChanged(this);
            }
        }

        /**//// <summary>
        /// 转到上一页
        /// </summary>
        protected void GotoPreviewPage(object sender, EventArgs e)
        {
            if (PageIndexChanged != null)
            {
                PageIndex --;
                SetNavigatorPage();
                PageIndexChanged(this);
            }
        }

        /**//// <summary>
        /// 转到下一页
        /// </summary>
        protected void GotoNextPage(object sender, EventArgs e)
        {
            if (PageIndexChanged != null)
            {
                PageIndex++;
                SetNavigatorPage();
                PageIndexChanged(this);
            }
        }

        /**//// <summary>
        /// 转到末页
        /// </summary>
        protected void GotoLastPage(object sender, EventArgs e)
        {
            if (PageIndexChanged != null)
            {
                PageIndex = PageNumber;
                SetNavigatorPage();
                PageIndexChanged(this);
            }
        }

        /**//// <summary>
        /// 转到任一页
        /// </summary>
        protected void GotoPageIndex(object sender, EventArgs e)
        {
            if (PageIndexChanged != null)
            {
                int iInputPageIndex;
                if (PageIndexChanged != null && System.Int32.TryParse(txtPageIndex.Text.Trim(), out iInputPageIndex))
                {
                    if (iInputPageIndex != PageIndex)
                    {
                        PageIndex = iInputPageIndex;
                        SetNavigatorPage();
                        PageIndexChanged(this);
                    }
                }
            }
        }

        /**//// <summary>
        /// 初始化导航控件
        /// </summary>
        public void SetNavigatorPage()
        {
            int iRecordNumber;
            if (RecorderNumber == -1)
            {
                // 从数据库读取总记录数
                SqlHandler sh = new SqlHandler();
                sh.CommandText = "GetObjectNumber";
                sh.SetCommandParameter("@TableName", SqlDbType.VarChar, 50, TableName);
                sh.SetCommandParameter("@Filter", SqlDbType.NVarChar, 100, Filter);
                iRecordNumber = Convert.ToInt32(sh.ExecuteScalar());
            }
            else
            {
                // 读取外部设置总记录数
                iRecordNumber = RecorderNumber;
            }

            if (iRecordNumber == 0)
            {
                lblPageInfor.Text = "还没有" + ObjectName;
                lbFirstPage.Visible = false;
                lbPreviewPage.Visible = false;
                lbNextPage.Visible = false;
                lbLastPage.Visible = false;
                txtPageIndex.Visible = false;
                btnGotoPage.Visible = false;
            }
            else
            {
                lbFirstPage.Visible = true;
                lbPreviewPage.Visible = true;
                lbNextPage.Visible = true;
                lbLastPage.Visible = true;
                txtPageIndex.Visible = true;
                btnGotoPage.Visible = true;

                // 计算总页数
                if (iRecordNumber % PageSize == 0)
                    PageNumber = iRecordNumber / PageSize;
                else
                    PageNumber = iRecordNumber / PageSize + 1;

                // 设置当前页码
                if (PageIndex < 1)
                    PageIndex = 1;
                else
                {
                    if (PageIndex > PageNumber && PageNumber != 0)
                        PageIndex = PageNumber;
                }

                // 设置翻页状态
                if (PageNumber == 1)
                {
                    lbFirstPage.Enabled = false;
                    lbPreviewPage.Enabled = false;
                    lbNextPage.Enabled = false;
                    lbLastPage.Enabled = false;
                    txtPageIndex.Enabled = false;
                    btnGotoPage.Enabled = false;
                }
                else
                {
                    if (PageIndex == 1)
                    {
                        lbFirstPage.Enabled = false;
                        lbPreviewPage.Enabled = false;
                        lbNextPage.Enabled = true;
                        lbLastPage.Enabled = true;
                    }
                    else
                    {
                        if (PageIndex == PageNumber)
                        {
                            lbFirstPage.Enabled = true;
                            lbPreviewPage.Enabled = true;
                            lbNextPage.Enabled = false;
                            lbLastPage.Enabled = false;
                        }
                        else
                        {
                            lbFirstPage.Enabled = true;
                            lbPreviewPage.Enabled = true;
                            lbNextPage.Enabled = true;
                            lbLastPage.Enabled = true;
                        }
                    }
                }

                StartRowNumber = PageSize * (PageIndex - 1) + 1;
                int iRemainder = iRecordNumber % PageSize;
                if (iRemainder == 0)
                {
                    EndRowNumber = StartRowNumber + PageSize - 1;
                }
                else
                {
                    if (PageIndex == PageNumber)        // 要显示最后一页
                    {
                        EndRowNumber = StartRowNumber + iRemainder - 1;
                    }
                    else
                    {
                        EndRowNumber = StartRowNumber + PageSize - 1;
                    }
                }

                // 设置控件状态
                lblPageInfor.Text = "共有" + iRecordNumber.ToString() + ObjectQuantifier + ObjectName + " 第" + PageIndex.ToString() + "/" + PageNumber.ToString() + "页";
                txtPageIndex.Text = PageIndex.ToString();
            }
        }
    }
}

        上面获取记录总数的存储过程如下：

CREATE   PROCEDURE  dbo.GetObjectNumber
(
     @TableName   varchar ( 50 ),
     @Filter   nvarchar ( 100 )
)

AS
    
     DECLARE   @spSQL   varchar ( 500 )
     SET   @spSQL   =   ' SELECT COUNT(*) AS RecordNumber FROM  '   +   @TableName   +   '  WHERE 1=1  '   +   @Filter
     EXEC ( @spSQL )

RETURN

        该控件使用如下：
        1.添加对该控件dll的引用，并在页面中添加引用：

<% @ Register TagPrefix = "Charly "  Namespace = "Charly .WebControls "  Assembly = " WebControls "   %>

        2.在你的Page_Load中绑定翻页事件方法，并设置好它的相关属性，如

dnArticleList.PageIndexChanged  +=   new  DataNavigator.PageIndexChangedEventHandler(DataNavigatorArticleList_PageIndexChanged);
    dnArticleList.ObjectName = "文章";
    dnArticleList.ObjectQuantifier = "篇";
    dnArticleList.TableName = "Articles";
    dnArticleList.Filter =  " AND UserID = '" + strUserID + "'";
    dnArticleList.PageIndex = 1;

        在该DataNavigatorArticleList_PageIndexChanged方法中重新绑定你要显示的列表数据。
        3.控件初始化
        根据自己的需要在初始化的时候（一般是Page_Load中）对导航控件的属性进行设置，如需要重新设置，可设置完其属性后，调用它的SetNavigatorPage()方法生效，比如重新设定过滤条件的时候。
        翻页的时候需要根据它的属性值重新绑定你的数据到RepeaterList等数据列表控件。