C#利用存储过程进行高速分页[包括前台和后台代码]

存储过程如下：

CREATE Procedure PageData
@tb varchar(50), --表名
@col varchar(50), --按该列来进行分页(必须是唯一性的字符，比如标识种子)
@colorder varchar(50), --需要排序的字段(为空，则默认为col)
@orderby bit, --排序,0-顺序,1-倒序
@collist varchar(800),--要查询出的字段列表,*表示全部字段
@pagesize int, --每页记录数
@page int, --指定页
@condition varchar(800)--查询条件
--@pages int OUTPUT --总页数
--@sqlout nvarchar(4000),---返回sql语句

AS
SET NOCOUNT ON
Declare @intResult Int
Begin Tran
declare @pages int
DECLARE @sql nvarchar(4000),@where1 varchar(800),@where2 varchar(800)
IF @colorder is null or rtrim(@colorder)=''
set @colorder = @col
IF @condition is null or rtrim(@condition)=''
BEGIN--没有查询条件
SET @where1=' Where '
SET @where2=' '
END
ELSE
BEGIN--有查询条件
SET @where1=' Where ('+@condition+') AND '--本来有条件再加上此条件
SET @where2=' Where ('+@condition+') '--原本没有条件而加上此条件
END
SET @sql='Select @intResult=COUNT(*) FROM '+@tb+@where2
EXEC sp_executesql @sql,N'@intResult int OUTPUT',@intResult OUTPUT--计算总记录数
Select @pages=CEILING((@intResult+0.0)/@pagesize)--计算总页数
IF @orderby=0
SET @sql='Select TOP '+CAST(@pagesize AS varchar)+' '+@collist+ ' FROM '+@tb+@where1+@col+'>(Select MAX('+@col+') '+ ' FROM (Select TOP '+CAST(@pagesize*(@page-1) AS varchar)+' '+
@col+' FROM '+@tb+@where2+'ORDER BY '+@col+') t) orDER BY '+@colorder
ELSE
SET @sql='Select TOP '+CAST(@pagesize AS varchar)+' '+@collist+' FROM '+@tb+@where1+@col+'<(Select MIN('+@col+') '+ ' FROM (Select TOP '+CAST(@pagesize*(@page-1) AS varchar)+' '+
@col+' FROM '+@tb+@where2+'ORDER BY '+@col+' DESC) t) orDER BY '+@colorder+' DESC'
IF @page=1--第一页
SET @sql='Select TOP '+CAST(@pagesize AS varchar)+' '+@collist+' FROM '+@tb+
@where2+'ORDER BY '+@colorder+CASE @orderby WHEN 0 THEN '' ELSE ' DESC' END
--set @sqlout = @sql
EXEC(@sql)
--print 'Sql语句输出为: ' + @sqlout
-------------------------------------------------------------------------------------------------------------------------------------------
If @@Error <> 0
Begin
RollBack Tran
select -1
End
Else
Begin
Commit Tran
select @intResult
End

GO

后台代码：

totalcount = sql_function.PageDS.recordcounts("select * from lockip");

//当前页
//计算总页数;totalpage
if (totalcount / PageSize == 0)
{
totalpage = totalcount / PageSize;
}
else
{
totalpage = totalcount / PageSize + 1;
}
if (Request.QueryString["page"] == null)///指地址栏中没有PAGE字符
{
currentpage = 1;
}

if (Request.QueryString["page"] != null)
{
// 判断是否为数值
if (sql_function.publicfunction.isNumber(Request.QueryString["page"]))
{
currentpage = 1;
}
else///是数值
{
if (Request.QueryString["page"].Length > 10 || Request.QueryString["page"].Length < 1)///防止Convert.ToInt32抛出异常或者防止地址栏所得到的page=这样的值
{
currentpage = 1;
}
else
{
if (Convert.ToInt32(Request.QueryString["page"]) > totalpage)///是否大于总页数
{
currentpage = totalpage;
}
else
{
if (Convert.ToInt32(Request.QueryString["page"]) <= 1)///是否小于页数1
{
currentpage = 1;
}
else
{
currentpage = Convert.ToInt32(Request.QueryString["page"]);
}
}
}
}
}
else
{
currentpage = 1;
}

IpList.DataSource = sql_function.SQLDB.getvalues_Datatable("PageData 'LockIP','LockIP_ID','LockIP_ID',1,'*'," + PageSize + "," + currentpage + ",''");//填充数据

IpList.DataBind();

pagelist.Text = sql_function.PageDS.pagination(totalcount, PageSize, currentpage, "?ModuleID=" + Request["ModuleID"] + "", 0, currentpage, PageSize).ToString();//分页

命名空间：

namespace sql_function
{
public class publicfunction
{
/// <summary>
/// 类querystring判断是否为数字 TRUE代表不是数字，False代表是数字
/// </summary>
/// <param name="s">字符串</param>
/// <returns></returns>
public static bool isNumber(string s)
{
int Flag = 0;
char[] str = s.ToCharArray();
for (int i = 0; i < str.Length; i++)
{
if (Char.IsNumber(str[i]))
{
Flag++;
}
else
{
Flag = -1;
break;
}
}
if (Flag > 0)
{
return false;
}
else
{
return true;
}
}

}

//pageDS用来处理分页
public class PageDS
{

public static int recordcounts(string sqls) ///计算总共有多少条记录
{
string strsqls = sqls;
int allcount = 0;

SqlConnection conn = sql_function.SQLDB.opendatabase();
SqlCommand da = new SqlCommand(sqls, conn);
SqlDataReader cms = da.ExecuteReader();
while (cms.Read())
{
allcount += 1;
}
return allcount;

}

/// <summary>
/// 绑定数据，并且实现分页功能
/// </summary>
/// <param name="sqls"></param>
/// <param name="currentpage"></param>
/// <param name="pagesize"></param>
/// <param name="table"></param>
/// <returns></returns>
public static DataView datas(string sqls, int currentpage, int pagesize, string table)
{
int startcount;
if (currentpage < 1)
{
startcount = currentpage * pagesize;
}
else
{
startcount = (currentpage - 1) * pagesize;
}

SqlConnection conn = sql_function.SQLDB.opendatabase();
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter(sqls, conn);
da.Fill(ds, startcount, pagesize, table.ToString());
return ds.Tables[0].DefaultView;
}

/// </summary>
/// 对文本内容实现分页
/// <param name="total">总记录数</param>
/// <param name="per">每页记录数</param>
/// <param name="page">当前页数</param>
/// <param name="query_string">Url参数</param>
/// <param name="ID">参数</param>
/// <param name="currentpage">当前页</param>
/// <param name="PageSize">每页分页大小</param>
public static string pagination(int total, int per, int page, string query_string, int ID, int currentpage, int PageSize)
{
int allpage = 0;
int next = 0;
int pre = 0;
int startcount = 0;
int endcount = 0;
string pagestr = "";
if (page < 1) { page = 1; }
//计算总页数
if (per != 0)
{
allpage = (total / per);
allpage = ((total % per) != 0 ? allpage + 1 : allpage);
allpage = (allpage == 0 ? 1 : allpage);
}
next = page + 1;
pre = page - 1;
startcount = (page + 5) > allpage ? allpage - 9 : page - 4;//中间页起始序号
//中间页终止序号
endcount = page < 5 ? 10 : page + 5;
if (startcount < 1) { startcount = 1; } //为了避免输出的时候产生负数，设置如果小于1就从序号1开始
if (allpage < endcount) { endcount = allpage; }//页码+5的可能性就会产生最终输出序号大于总页码，那么就要将其控制在页码数之内
pagestr = "共<font color=/"green/">" + allpage + "</font>页 共有<font color=/"green/">" + total + "</font>条记录 当前页<font color=/"green/">" + currentpage + "</font>/" + allpage + " 每页<font color=/"green/">" + PageSize + "</font>条 ";

pagestr += page > 1 ? "<a href=/"" + query_string + "&page=1/">首 页</a> <a href=/"" + query_string + "&page=" + pre + "/">上一页</a>" : "首 页 上一页";
//中间页处理，这个增加时间复杂度，减小空间复杂度
for (int i = startcount; i <= endcount; i++)
{
pagestr += page == i ? " <font color=/"green/">" + i + "</font>" : " <a href=/"" + query_string + "&page=" + i + "/">" + i + "</a>";
}
pagestr += page != allpage ? " <a href=/"" + query_string + "&page=" + next + "/">下一页</a> <a href=/"" + query_string + "&page=" + allpage + "/">尾 页</a>" : " 下一页 尾 页";

return pagestr;
}
}

public class SQLDB
{

public static readonly string connectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ToString();

/// #region 数据库连接对象操作
/// <summary>
/// 打开数据库连接 ///针对ACCESS数据库
/// </summary>
public static SqlConnection opendatabase()
{

try
{
SqlConnection conn = new SqlConnection(connectionString);
conn.Open();
return conn;
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}

/// <summary>
/// 返回指定Sql语句的返回DataTable
/// </summary>
/// <param name="strSQL">传入的Sql语句</param>
/// <returns>DataTable</returns>
public static DataTable getvalues_Datatable(string strSQL)
{
try
{
SqlConnection conn = opendatabase();
DataTable table = new DataTable();
SqlDataAdapter da = new SqlDataAdapter(strSQL, conn);
da.Fill(table);
closedatabase(conn);
return table;
}
catch (Exception e)
{
throw new Exception(e.Message);
}
}

/// <summary>
/// 关闭数据库连接释放资源
/// </summary>
/// 数据库连接对象

public static void closedatabase(SqlConnection conn)
{
try
{
if (conn != null)
{
conn.Close();
conn.Dispose();
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
finally
{
conn.Close();
}
}

}

}

前台代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ipmanager.aspx.cs" Inherits="webmanager_ip_ipmanager" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>IP管理</title>
<LINK href="../css/index.css" type=text/css rel=stylesheet>
</head>
<body>
<form id="selform" runat="server" name="selform">
<div>

<table class="tableBorder" cellspacing="1" cellpadding="2" width="100%" align=center border=0>
<tbody>
<tr>
<th colspan=3> 日志管理</th>
</tr>
<tr>
<th style="height: 25px"><div align="center">日志标题</div></th>
<th style="height: 25px"><div align="center">日志内容</div></th>
<th style="height: 25px"><div align="center">添加时间</div></th>
</tr>

<asp:Repeater ID="IpList" runat="server">
<HeaderTemplate></HeaderTemplate>
<ItemTemplate>
<tr align=right style="cursor:hand">
<td class=forumRowHighlight style="height: 22px"><div align="center"><%#Eval("LockIP_ID")%> <%#Eval("LockIP_startip")%></div></td>
<td class=forumRowHighlight style="height: 22px"><div align="center"><%#Eval("LockIP_endip")%></div></td>
<td class=forumRowHighlight style="height: 22px"><div align="center"><%#Eval("typeip") %></div></td>
</tr>
</ItemTemplate>
<FooterTemplate></FooterTemplate>
</asp:Repeater>
<tr>
<td class="forumRowHighlight" colspan=3 style="height: 22px"><div align="right" style="padding-right:5px;"><asp:Label ID="pagelist" runat="server"></asp:Label></div></td>
</tr>
<tr>
<td class=forumrow colspan=3 height=22>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>