分頁存儲過程

CREATE PROCEDURE UP_GetRecordByPage 
    @tblName      varchar(255),       -- 表名 
    @fldName      varchar(255),       -- 主鍵
    @PageSize     int = 10,           -- 頁面尺寸
    @PageIndex    int = 1,            -- 第幾頁
    @IsReCount    bit = 0,            -- 是否返回記錄總數，0表示不返回 
    @OrderType    bit = 0,            -- 是否更具主鍵排序,0表示不
    @strWhere     varchar(2000) = ''  -- 查詢條件 (注意: 不加 where) 
AS
declare @strSQL   varchar(6000)       -- 主語句 
declare @strTmp   varchar(2000)        -- 零時語句
declare @strOrder varchar(400)        -- 排序
--------------------------
--可以在這以前判斷有沒有SQL注入式攻擊
--建設中。。。。
--如果有，終止執行。
-------------------------
if @OrderType != 0 
begin 
    set @strTmp = '<(select min' 
    set @strOrder = ' order by [' + @fldName +'] desc' 
end 
else 
begin 
    set @strTmp = '>(select max' 
    set @strOrder = ' order by [' + @fldName +'] asc' 
end 
 
set @strSQL = 'select top ' + str(@PageSize) + ' * from [' 
    + @tblName + '] where [' + @fldName + ']' + @strTmp + '([' 
    + @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' [' 
    + @fldName + '] from [' + @tblName + ']' + @strOrder + ') as tblTmp)' 
    + @strOrder 
 
if @strWhere != '' 
    set @strSQL = 'select top ' + str(@PageSize) + ' * from [' 
        + @tblName + '] where [' + @fldName + ']' + @strTmp + '([' 
        + @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' [' 
        + @fldName + '] from [' + @tblName + '] where ' + @strWhere + ' ' 
        + @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder 
 
if @PageIndex = 1 
begin 
    set @strTmp ='' 
    if @strWhere != '' 
        set @strTmp = ' where ' + @strWhere 
 
    set @strSQL = 'select top ' + str(@PageSize) + ' * from [' 
        + @tblName + ']' + @strTmp + ' ' + @strOrder 
end 
 
if @IsReCount != 0 
begin 
    set @strSQL = @strSQL+ ' select count(*) as Total from [' + @tblName + ']' 
    if @strWhere != '' 
        set @strSQL = @strSQL+ ' where ' + @strWhere 
 
end 
exec (@strSQL)  
 

using System;
using System.Data;
using System.Configuration;
using System.Collections;
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 BLL;

 

public partial class fenye : System.Web.UI.Page
{
    BLL.Class1B mybll;
   
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            Bind();
        }
    }

    public void Bind()
    {
      
            mybll = new Class1B();
            int _pageSize=this.grdview.PageSize;
            int _page =int.Parse(this.lbl_page_current.Text);
            //設置查詢的條件
            string  strWhere = "";
            string iRoleID = this.txtRoleID.Text.Trim();
            string iRoleName = this.txtRoleName.Text.Trim();

            strWhere = "('" + iRoleID + "'='' or RoleID='" + iRoleID + "') and ('" + iRoleName + "'='' or RoleName='" + iRoleName + "')";
            grdview.DataSource = mybll.GetList(_pageSize, _page, strWhere);
            grdview.DataBind();
   lbl_page_count.Text=(mybll.pageCount).ToString();
   lbl_record_count.Text=(mybll.RecordCount).ToString();
         
    }

    #region 將讀取的ChangeFlag轉換為容易讀取的中文
    public string ChangeFlag(string strDeleteFlag)
    {
        switch (strDeleteFlag)
        {
            case "True":
                return "是";
                break;
            default:
                return "否";
                break;
        }
    }
    #endregion

    #region 分頁
    public void go_page(int type)
    {
        //獲取當前頁和總的頁數
        int pageCurrent = int.Parse(this.lbl_page_current.Text);
        int pageCount = int.Parse(this.lbl_page_count.Text);
        switch (type)
        {
            case 1:
                //首頁
                pageCurrent = 1;break;

            case 3:
                //上一頁
                if (pageCurrent < pageCount)
                {
                    pageCurrent++;
                }
                break;
            case 2:
                //下一頁
                if(pageCurrent>1)
                {
                    pageCurrent--;
                }
                break;
          
            case 4:
                //末頁
                pageCurrent = pageCount;
                break;
        }
        this.lbl_page_current.Text = pageCurrent.ToString();
        Bind();
    }
    protected void lbl_last_Click(object sender, EventArgs e)
    {
        go_page(4);
    }
    protected void lbl_down_Click(object sender, EventArgs e)
    {
        go_page(3);
    }
    protected void lbl_up_Click(object sender, EventArgs e)
    {
        go_page(2);
    }
    protected void lbl_first_Click(object sender, EventArgs e)
    {
        go_page(1);
    }
    protected void txt_goto_TextChanged(object sender, EventArgs e)
    {
        int pageCurrent = int.Parse(this.lbl_page_current.Text.Trim());
        int pageCount = int.Parse(this.lbl_page_count.Text.Trim());
        int Pagegoto=int.Parse(this.txt_goto.Text.Trim());

        if(Pagegoto<1 || Pagegoto>pageCount)
        {
            return;
        }
        this.lbl_page_current.Text = this.txt_goto.Text.ToString();
        Bind();
    }
    #endregion
    protected void btnsearch_Click(object sender, EventArgs e)
    {
        Bind();
    }
}