在WEB开发中，分页是我们必须要解决的一个问题，今天我们一起来看看ASP.NET调用Oracle存储过程实现分页的方法。

包定义

create or replace package MaterialManage is TYPE T_CURSOR IS REF CURSOR; Procedure Per_QuickPage ( TbName in varchar2, --表名 FieldStr in varchar2, --字段集 RowFilter in varchar2, --过滤条件 SortStr in varchar2, --排序集 RownumFieldStr in varchar2, --分页条件 TotalCount out number, --总记录数 Cur_ReturnCur out T_CURSOR --返回的游标 ); end MaterialManage;

包主体

create or replace package body MaterialManage is Procedure Per_QuickPage ( TbName in varchar2, --表 名 FieldStr in varchar2, --字段集 RowFilter in varchar2, --过滤条件 SortStr in varchar2, --排序集 MinRowNum in number, --分页小值 MaxRowNum in number, --分页大值 TotalCount out number, --总记录数 Cur_ReturnCur out T_CURSOR ) is v_SourceTb1 varchar2(3000); --动态表名1 v_SourceTb2 varchar2(3000); --动态表名2 v_SourceTb3 varchar2(3000); --动态表名3 v_SourceTb4 varchar2(3000); --动态表名4 v_TotalCount varchar2(50); --总记录数 v_sql varchar2(3000); --动态sql begin v_SourceTb1 := ’’’’(select ’’’’|| FieldStr ||’’’’ from ’’’’|| TbName ||’’’’) SourceTb1’’’’; v_SourceTb2 := ’’’’(select * from ’’’’|| v_SourceTb1 ||’’’’ where ’’’’|| RowFilter ||’’’’ ’’’’|| SortStr ||’’’’) SourceTb2’’’’; v_SourceTb3 := ’’’’(select rownum as Rowindex,SourceTb2.* from ’’’’|| v_SourceTb2 ||’’’’ where rownum<=’’’’|| MaxRowNum ||’’’’) SourceTb3’’’’; v_SourceTb4 := ’’’’(select * from ’’’’|| v_SourceTb1 ||’’’’ where ’’’’|| RowFilter ||’’’’) SourceTb4’’’’; v_sql := ’’’’select count(*) as TotalCount from ’’’’|| v_SourceTb4; execute immediate v_sql into v_TotalCount; TotalCount := v_TotalCount; v_sql := ’’’’select * from ’’’’|| v_SourceTb3 ||’’’’ where RowIndex >=’’’’||MinRowNum; open Cur_ReturnCur for v_sql; end Per_QuickPage; END MaterialManage;

由于Oracle有个rownum特性，所以分页的时候就是利用rownum来实现。如果大家还有什么更好的办法记得告诉我一声，多谢了，因为我测试了上面的分页方法，效率并不是很高。

存储过程返回了两个参数：

TotalCount ：当前条件下的总记录数；

Cur_ReturnCur ：游标类型，就是所要读取的记录的集合。

下面是ASP.NET中调用的代码：

{  this.style.display=’none’; Codehighlighter1_2319_2685_Open_Text.style.display=’none’; Codehighlighter1_2319_2685_Closed_Image.style.display=’inline’; Codehighlighter1_2319_2685_Closed_Text.style.display=’inline’;  }" src="/Article/UploadFiles/200801/20080107113437194.gif" align="top" />{  this.style.display=’none’; Codehighlighter1_2319_2685_Closed_Text.style.display=’none’; Codehighlighter1_2319_2685_Open_Image.style.display=’inline’; Codehighlighter1_2319_2685_Open_Text.style.display=’inline’;  }" src="/Article/UploadFiles/200801/20080107113438138.gif" align="top" />/**//// <summary>  /// 调用存储过程实现快速分页  /// </summary>  /// <param name="TbName">表名称</param>  /// <param name="FieldStr">字段名称</param>  /// <param name="RowFilter">过滤条件</param>  /// <param name="SortStr">排序字段</param>  /// <param name="MinPageNum">分页小值</param>  /// <param name="MaxPageNum">分页大值</param>  /// <param name="TotalCount">总记录(需要返回)</param>  /// <returns>DataTable</returns>  public DataTable QuickPage(string TbName,string FieldStr,string RowFilter, string SortStr,int MinRowNum,int MaxRowNum,ref int RecordCount)  {  this.style.display=’none’; Codehighlighter1_2824_4736_Open_Text.style.display=’none’; Codehighlighter1_2824_4736_Closed_Image.style.display=’inline’; Codehighlighter1_2824_4736_Closed_Text.style.display=’inline’;  }" src="/Article/UploadFiles/200801/20080107113437194.gif" align="top" />{  this.style.display=’none’; Codehighlighter1_2824_4736_Closed_Text.style.display=’none’; Codehighlighter1_2824_4736_Open_Image.style.display=’inline’; Codehighlighter1_2824_4736_Open_Text.style.display=’inline’;  }" src="/Article/UploadFiles/200801/20080107113438138.gif" align="top" />{  OracleConnection conn = new OracleConnection(ConfigurationSettings.AppSettings["OracleConnstr"].ToString()); OracleCommand cmd  = new OracleCommand();  cmd.Connection   = conn;  cmd.CommandText   = "MaterialManage.Per_QuickPage";  cmd.CommandType   = CommandType.StoredProcedure;  cmd.Parameters.Add("TbName",OracleType.VarChar,50);    //表  名  cmd.Parameters["TbName"].Direction = ParameterDirection.Input;  cmd.Parameters["TbName"].Value     = TbName;  cmd.Parameters.Add("FieldStr",OracleType.VarChar,3000);   //字段集  cmd.Parameters["FieldStr"].Direction = ParameterDirection.Input;  cmd.Parameters["FieldStr"].Value     = FieldStr;  cmd.Parameters.Add("RowFilter",OracleType.VarChar,3000);  //过滤条件  cmd.Parameters["RowFilter"].Direction = ParameterDirection.Input;  cmd.Parameters["RowFilter"].Value     = RowFilter;  cmd.Parameters.Add("SortStr",OracleType.VarChar,3000);   //排序字段  cmd.Parameters["SortStr"].Direction = ParameterDirection.Input;  cmd.Parameters["SortStr"].Value     = SortStr;  cmd.Parameters.Add("MinRowNum",OracleType.Number);    //分页小值  cmd.Parameters["MinRowNum"].Direction = ParameterDirection.Input;  cmd.Parameters["MinRowNum"].Value     = MinRowNum;  cmd.Parameters.Add("MaxRowNum",OracleType.Number);    //分页大值  cmd.Parameters["MaxRowNum"].Direction = ParameterDirection.Input;  cmd.Parameters["MaxRowNum"].Value     = MaxRowNum;  cmd.Parameters.Add("TotalCount",OracleType.Number);    //页总记录数  cmd.Parameters["TotalCount"].Direction = ParameterDirection.Output;  cmd.Parameters["TotalCount"].Value     = 0;  cmd.Parameters.Add("Cur_ReturnCur",OracleType.Cursor);   //返回的游标  cmd.Parameters["Cur_ReturnCur"].Direction = ParameterDirection.Output;  DataSet Ds = new DataSet();  OracleDataAdapter adapter= new OracleDataAdapter(cmd);  adapter.Fill(Ds);  conn.Close();  //总记录数  RecordCount  = int.Parse(cmd.Parameters["TotalCount"].Value.ToString());  return Ds.Tables[0];  }