using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Data.SqlClient; /// <summary> ///PageNums 的摘要说明 /// </summary> public class PageNums { /// </summary> /// <param name="ds">DataSet实例</param> /// <param name="datalistname">DataList名称</param> /// <param name="pagesize">分页大小</param> public static string GetPageNum(DataSet ds, DataList datalistname, int pagesize) { PagedDataSource objPds = new PagedDataSource(); objPds.DataSource = ds.Tables[0].DefaultView; objPds.AllowPaging = true; int total = ds.Tables[0].Rows.Count; objPds.PageSize = pagesize; int page; if (HttpContext.Current.Request.QueryString["page"] != null) page = Convert.ToInt32(HttpContext.Current.Request.QueryString["page"]); else page = 1; objPds.CurrentPageIndex = page - 1; datalistname.DataSource = objPds; datalistname.DataBind(); 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 (pagesize != 0) { allpage = (total / pagesize);//计算总页数 allpage = ((total % pagesize) != 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" + allpage + "页"; pagestr += page > 1 ? "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=1\">首页</a>;<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?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=\"#ff0000\">" + i + "</font>" : "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + i + "\">" + i + "</a>"; } pagestr += page != allpage ? "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + next + "\">下一页</a><a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + allpage + "\">末页</a>" : " 下一页 末页"; return pagestr; } public static string GetPageSql(string FileName, DataList datalistname, int pagesize) { int page; int allpage = 0; int next = 0; int pre = 0; int startcount = 0; int endcount = 0; string pagestr = ""; if (HttpContext.Current.Request.QueryString["page"] != null) page = Convert.ToInt32(HttpContext.Current.Request.QueryString["page"]); else page = 1; if (page < 1) { page = 1; } DataSet ds = DataBindSql("EXEC pagesql '*',' FROM " + FileName + " '," + pagesize + "," + page, FileName); datalistname.DataSource = ds; datalistname.DataBind(); int total = DataBind(FileName); //计算总页数 if (pagesize != 0) { allpage = (total / pagesize);//计算总页数 allpage = ((total % pagesize) != 0 ? allpage + 1 : allpage); allpage = (allpage == 0 ? 1 : allpage); } next = page + 1; pre = page - 1; startcount = page / 5 * 5;//中间页起始序号 //中间页终止序号 endcount = startcount+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 = "<a>"+page + "/" + allpage + "页</a>"; pagestr += page > 1 ? "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=1\">首页</a><a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?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=\"#ff0000\">" + i + "</font>" : "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + i + "\">" + i + "</a>"; } pagestr += page != allpage ? "<a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + next + "\">下一页</a><a href=\"" + HttpContext.Current.Request.CurrentExecutionFilePath + "?page=" + allpage + "\">末页</a>" : " 下一页 末页"; return pagestr; } private static int DataBind(string FileName) { string sql = "select * from " + FileName; DbConnection dc = new DbConnection(); SqlConnection mycon = new SqlConnection(dc.ConnectionString); SqlDataAdapter mypter = new SqlDataAdapter(sql, mycon); DataSet ds = new DataSet(); mycon.Open(); mypter.Fill(ds, FileName); mycon.Close(); int total = ds.Tables[0].Rows.Count; return total; } private static DataSet DataBindSql(string sql, string FileName) { DbConnection dc = new DbConnection(); SqlConnection mycon = new SqlConnection(dc.ConnectionString); SqlDataAdapter mypter = new SqlDataAdapter(sql,mycon); DataSet ds = new DataSet(); mycon.Open(); mypter.Fill(ds, FileName); mycon.Close(); return ds; } }

CREATE PROCEDURE pagesql @sqlSelect varchar(800) --SELECT 后面 FROM 前面 的 字段 不用包含SELECT ,@sqlFrom varchar(800) --FROM 后面 的 字段 包含FROM ,@countPerPage int -- 每页数据行数 ,@toPage int --要转到的页码 AS BEGIN -- 根据每页数据行数 和 要转到的页码 得到 数据起止点 Declare @start int Declare @end int set @end = @countPerPage * @toPage set @start = @countPerPage * (@toPage - 1) + 1 -- 临时表名称 可随机命名 Declare @tmpTable varchar(10) SET @tmpTable ='#tmp' Declare @sqlStr varchar(800) -- 创建数据源到临时表 SELECT @sqlStr = 'SELECT Identity(int,1,1) AS RowIndex,' SELECT @sqlStr = @sqlStr + rtrim(@sqlSelect) + ' INTO '+ @tmpTable SELECT @sqlStr = @sqlStr + rtrim(@sqlFrom) -- 查询临时表 得到所需要的数据 SELECT @sqlStr = @sqlStr + ' '+'SELECT '+ rtrim(@sqlSelect) +' FROM ' + @tmpTable SELECT @sqlStr = @sqlStr + ' WHERE RowIndex BETWEEN ' + Convert(char,@start) + " AND " + Convert(char,@end) -- 删除临时表 SELECT @sqlStr = @sqlStr + ' '+'DROP TABLE '+@tmpTable EXEC (@sqlStr) END GO