ASP.NET和MSSQL高性能分頁

首先是存儲過程,只取出我需要的那段數據,如果頁數超過數據總數,自動返回最後一頁的紀錄:

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author: Clear
-- Description: 高性能分頁
-- http://www.cnblogs.com/roucheng/
-- =============================================
Alter PROCEDURE [dbo].[Tag_Page_Name_Select]
-- 傳入最大顯示紀錄數和當前頁碼
    @MaxPageSize int,
    @PageNum int,
-- 設置一個輸出參數返回總紀錄數供分頁列表使用
    @Count int output
AS
BEGIN
    SET NOCOUNT ON;

  DECLARE
-- 定義排序名稱參數
        @Name nvarchar(50),
-- 定義游標位置
        @Cursor int
-- 首先得到紀錄總數
  Select @Count = count(tag_Name)
    FROM [viewdatabase0716].[dbo].[view_tag];
-- 定義游標需要開始的位置
    Set @Cursor = @MaxPageSize*(@PageNum-1)+1
-- 如果游標大於紀錄總數將游標放到最後一頁開始的位置
    IF @Cursor > @Count
    BEGIN
-- 如果最後一頁與最大每次紀錄數相等，返回最後整頁
        IF @Count % @MaxPageSize = 0
        BEGIN
            IF @Cursor > @MaxPageSize
                Set @Cursor = @Count - @MaxPageSize + 1
            ELSE
                Set @Cursor = 1
        END
-- 否則返回最後一頁剩下的紀錄
        ELSE
            Set @Cursor = @Count - (@Count % @MaxPageSize) + 1
    END
-- 將指針指到該頁開始
    Set Rowcount @Cursor
-- 得到紀錄開始的位置
    Select @Name = tag_Name
    FROM [viewdatabase0716].[dbo].[view_tag]
    orDER BY tag_Name;
-- 設置開始位置
    Set Rowcount @MaxPageSize
-- 得到該頁紀錄
        Select * 
        From [viewdatabase0716].[dbo].[view_tag]
        Where tag_Name >= @Name
        order By tag_Name

    Set Rowcount 0
END

　　然後是分頁控制項(... 為省略的生成HTML代碼方法):

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.Text;

/// <summary>
/// 擴展連接字元串
/// </summary>
public class ExStringBuilder
{
    private StringBuilder InsertString;
    private StringBuilder PageString;
    private int PrivatePageNum = 1;
    private int PrivateMaxPageSize = 25;
    private int PrivateMaxPages = 10;
    private int PrivateCount;
    private int PrivateAllPage;
    public ExStringBuilder()
    {
        InsertString = new StringBuilder("");
    }
    /// <summary>
    /// 得到生成的HTML
    /// </summary>
    public string GetHtml
    {
        get
        {
            return InsertString.ToString();
        }
    }
    /// <summary>
    /// 得到生成的分頁HTML
    /// </summary>
    public string GetPageHtml
    {
        get
        {
            return PageString.ToString();
        }
    }
    /// <summary>
    /// 設置或獲取目前頁數
    /// </summary>
    public int PageNum
    {
        get
        {
            return PrivatePageNum;
        }
        set
        {
            if (value >= 1)
            {
                PrivatePageNum = value;
            }
        }
    }
    /// <summary>
    /// 設置或獲取最大分頁數
    /// </summary>
    public int MaxPageSize
    {
        get
        {
            return PrivateMaxPageSize;
        }
        set
        {
            if (value >= 1)
            {
                PrivateMaxPageSize = value;
            }
        }
    }
    /// <summary>
    /// 設置或獲取每次顯示最大頁數
    /// </summary>
    public int MaxPages
    {
        get
        {
            return PrivateMaxPages;
        }
        set
        {
            PrivateMaxPages = value;
        }
    }
    /// <summary>
    /// 設置或獲取數據總數
    /// </summary>
    public int DateCount
    {
        get
        {
            return PrivateCount;
        }
        set
        {
            PrivateCount = value;
        }
    }
    /// <summary>
    /// 獲取數據總頁數
    /// </summary>
    public int AllPage
    {
        get
        {
            return PrivateAllPage;
        }
    }
    /// <summary>
    /// 初始化分頁
    /// </summary>
    public void Pagination()
    {
        PageString = new StringBuilder("");
//得到總頁數
        PrivateAllPage = (int)Math.Ceiling((decimal)PrivateCount / (decimal)PrivateMaxPageSize);
//防止上標或下標越界
        if (PrivatePageNum > PrivateAllPage)
        {
            PrivatePageNum = PrivateAllPage;
        }
//滾動游標分頁方式
        int LeftRange, RightRange, LeftStart, RightEnd;
        LeftRange = (PrivateMaxPages + 1) / 2-1;
        RightRange = (PrivateMaxPages + 1) / 2;
        if (PrivateMaxPages >= PrivateAllPage)
        {
            LeftStart = 1;
            RightEnd = PrivateAllPage;
        }
        else
        {
            if (PrivatePageNum <= LeftRange)
            {
                LeftStart = 1;
                RightEnd = LeftStart + PrivateMaxPages - 1;
            }
            else if (PrivateAllPage - PrivatePageNum < RightRange)
            {
                RightEnd = PrivateAllPage;
                LeftStart = RightEnd - PrivateMaxPages + 1;
            }
            else
            {
                LeftStart = PrivatePageNum - LeftRange;
                RightEnd = PrivatePageNum + RightRange;
            }
        }

//生成頁碼列表統計
        PageString.Append(...);

        StringBuilder PreviousString = new StringBuilder("");
//如果在第一頁
        if (PrivatePageNum > 1)
        {
            ...
        }
        else
        {
            ...
        }
//如果在第一組分頁
        if (PrivatePageNum > PrivateMaxPages)
        {
            ...
        }
        else
        {
            ...
        }
        PageString.Append(PreviousString);
//生成中間頁 http://www.cnblogs.com/roucheng/
        for (int i = LeftStart; i <= RightEnd; i++)
        {
//為當前頁時
            if (i == PrivatePageNum)
            {
                ...
            }
            else
            {
                ...
            }
        }
        StringBuilder LastString = new StringBuilder("");
//如果在最後一頁
        if (PrivatePageNum < PrivateAllPage)
        {
            ...
        }
        else
        {
            ...
        }
//如果在最後一組
        if ((PrivatePageNum + PrivateMaxPages) < PrivateAllPage)
        {
            ...
        }
        else
        {
            ...
        }
        PageString.Append(LastString);
    }
    /// <summary>
    /// 生成Tag分類表格
    /// </summary>
    public void TagTable(ExDataRow myExDataRow)
    {
        InsertString.Append(...);
    }

　　調用方法:

//得到分頁設置並放入Session
        ExRequest myExRequest = new ExRequest();
        myExRequest.PageSession("Tag_", new string[] { "page", "size" });
//生成Tag分頁
        ExStringBuilder Tag = new ExStringBuilder();
        //設置每次顯示多少條紀錄
        Tag.MaxPageSize = Convert.ToInt32(Session["Tag_size"]);
        //設置最多顯示多少頁碼
        Tag.MaxPages = 9;
        //設置當前為第幾頁
        Tag.PageNum = Convert.ToInt32(Session["Tag_page"]);
        string[][] myNamenValue = new string[2][]{
            new string[]{"MaxPageSize","PageNum","Count"},
            new string[]{Tag.MaxPageSize.ToString(),Tag.PageNum.ToString()}
        };
//調用存儲過程
        DataTable myDataTable = mySQL.BatchGetDB("Tag_Page_Name_Select", myNamenValue, "Count");
        Tag.DateCount = (int)mySQL.OutputCommand.Parameters["@Count"].Value;
        Tag.Pagination();

        HeadPage.InnerHtml = FootPage.InnerHtml = Tag.GetPageHtml;

        for (int i = 0, j = myDataTable.Rows.Count; i < j; i++)
        {
            Tag.TagTable(new ExDataRow(myDataTable.Rows));
        }
        TagBox.InnerHtml = Tag.GetHtml;