自定义分页栏

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

        if (!IsPostBack)
        {
            showData(1, 4);//显示第一页记录。。每页显示四条记录
            this.btnPerPage.Enabled = false;
            this.btnFirstPage.Enabled = false;
            getCountPage(4);//窗本加载时得到总页数
            FillDropPage();//添充下拉框
        }
    }
    DataBase dbs = new DataBase();

    protected  static int pageNow = 1;//当前页数
    protected static int CountPage;//总页数

    protected void FillDropPage()
    {
        for (int i = 1; i <=CountPage; i++)
        {
            this.DropPage.Items.Add(i.ToString());
        }
    }

    protected void getCountPage(int i_page)//得到总页数
    {
        int Count = dbs.ExecuteScalar(CommandType.Text, "select count(*) from Test", null);
        CountPage = Count / i_page;
        if (Count % i_page > 0)
        {
            ++CountPage;
        }
        if (CountPage== 1)
        {
            this.btnLastPage.Enabled = false;
            this.btnNextPage.Enabled = false;
        }
    }

    //显示数据
    protected void showData(int i_pageNow, int i_pageSize)
    {
        //得到总记录数
      
        int currentPageStar = (i_pageNow - 1) * i_pageSize + 1;//当前页的第一条记录
        int currentPageEnd = i_pageNow * i_pageSize;//当前页的最后一条记录
        SqlParameter[] Params = new SqlParameter[2];
        Params[0] = dbs.MakeInParams("@currentPageStar", SqlDbType.VarChar, 4, currentPageStar);
        Params[1] = dbs.MakeInParams("@currentPageEnd", SqlDbType.VarChar, 4, currentPageEnd);
        DataSet dst = new DataSet();
        dst = dbs.GetDst(CommandType.StoredProcedure, "p_GetData", Params);
        this.GridView1.DataSource = dst.Tables[0].DefaultView;
        this.GridView1.DataBind();
    }

    //上一页按钮事件
    protected void btnPerPage_Click1(object sender, EventArgs e)
    {
        pageNow = pageNow - 1;
        this.DropPage.Text = pageNow.ToString();
        showData(pageNow, 4);
        this.btnNextPage.Enabled = true;
        this.btnLastPage.Enabled = true;
        if (pageNow == 1)
        {
            this.btnPerPage.Enabled = false;
            this.btnFirstPage.Enabled = false;
        }
    }

    //下一页按钮事件
    protected void btnNextPage_Click1(object sender, EventArgs e)
    {
        pageNow = pageNow + 1;
        this.DropPage.Text = pageNow.ToString();
        showData(pageNow, 4);
        this.btnPerPage.Enabled = true;
        this.btnFirstPage.Enabled = true;
        if (pageNow == CountPage)
        {
            this.btnNextPage.Enabled = false;
            this.btnLastPage.Enabled = false;
        }
    }
    //首页按钮事件
    protected void btnFirstPage_Click(object sender, EventArgs e)
    {
        FisrtEvent();
    }
    //末页按钮事件
    protected void btnLastPage_Click(object sender, EventArgs e)
    {
        LastEvent();
    }
    //通过下拉框选择装到第几页事件
    protected void DropPage_SelectedIndexChanged(object sender, EventArgs e)
    {
        int selectPage = Convert.ToInt32(this.DropPage.SelectedItem.Text);
        if (selectPage == 1)//选择了首页
        {
            FisrtEvent();
        }
        else if (selectPage == CountPage)//选择了末页
        {
            LastEvent();
        }
        else
        {
            pageNow =selectPage ;
            showData(pageNow, 4);
        }

    }
    ////选择首页事件(被调用)
    public void FisrtEvent()
    {
        this.btnPerPage.Enabled = false;
        this.btnNextPage.Enabled = true;
        this.btnLastPage.Enabled = true;
        this.btnFirstPage.Enabled = false;
        pageNow = 1;
        this.DropPage.Text = pageNow.ToString();
        showData(1, 4);
    }

    ////选择末页事件(被调用)
    public void LastEvent()
    {
        this.btnNextPage.Enabled = false;
        this.btnPerPage.Enabled = true;
        this.btnFirstPage.Enabled = true;
        this.btnLastPage.Enabled = false;
        pageNow = CountPage;
        this.DropPage.Text = pageNow.ToString();
        showData(CountPage, 4);
    }
}

PS：大家在看showDate()事件时会发现我在配置参数时调用了基类，
还有就是读取表中第m到n条数据的存储过程都没有写出来。。。。
读取第m条到n条数据在我的博客中有。大家可以去看看： 用sql语句查询从N条到M条的记录 
还有就是我想
将这一大串代码封装一下。。若能做成一个组件那就更好了。。希望各位大虾
指点。。。。谢谢。。。