Access结合aspnetpager分页

Access结合AspNetPager实现高效简洁分页功能

分页存储过程查询参数类

 

代码

using  System;
using  System.Collections.Generic;
using  System.Text;

namespace  King.Utility
{
     ///   <summary>
     ///  分页存储过程查询参数类
     ///   </summary>
     public   class  QueryParam
    {

         #region  "Private Variables"
         private   string  _TableName;
         private   string  _ReturnFields;
         private   string  _Where;
         private   string  _Orderfld;
         private   int  _OrderType  =   1 ;
         private   int  _PageIndex  =   1 ;
         private   int  _PageSize  =   int .MaxValue;
         #endregion

         #region  "Public Variables"

         ///   <summary>
         ///  表名
         ///   </summary>
         public   string  TableName
        {
             get
            {
                 return  _TableName;
            }
             set
            {
                _TableName  =  value;
            }

        }



         ///   <summary>
         ///  返回字段
         ///   </summary>
         public   string  ReturnFields
        {
             get
            {
                 return  _ReturnFields;
            }
             set
            {
                _ReturnFields  =  value;
            }
        }




         ///   <summary>
         ///  查询条件 需带Where
         ///   </summary>
         public   string  Where
        {
             get
            {
                 return  _Where;
            }
             set
            {
                _Where  =  value;
            }
        }





         ///   <summary>
         ///  排序字段
         ///   </summary>
         public   string  Orderfld
        {
             get
            {
                 return  _Orderfld;
            }
             set
            {
                _Orderfld  =  value;
            }
        }


         ///   <summary>
         ///  排序类型 1:降序 其它为升序
         ///   </summary>
         public   int  OrderType
        {
             get
            {
                 return  _OrderType;
            }
             set
            {
                _OrderType  =  value;
            }
        }


         ///   <summary>
         ///  当前页码
         ///   </summary>
         public   int  PageIndex
        {
             get
            {
                 return  _PageIndex;
            }
             set
            {
                _PageIndex  =  value;
            }

        }


         ///   <summary>
         ///  每页记录数
         ///   </summary>
         public   int  PageSize
        {
             get
            {
                 return  _PageSize;
            }
             set
            {
                _PageSize  =  value;
            }
        }
         #endregion
    }
}

OleDbHepler 数据库操作类

 

代码

using  System;
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.Data.OleDb;
using  System.Text;
///   <summary>
///  OleDbHepler 的摘要说明
///   </summary>
public   class  OleDbHepler
{
    
     #region  "数据库设置"
     ///   <summary>
     ///  获取数据库类型
     ///   </summary>
     public   static   string  GetDBType
    {
         get
        {
             return  ConfigurationManager.AppSettings[ " DBType " ];
        }
    }

     ///   <summary>
     ///  获取数据库连接字符串
     ///   </summary>
     public   static   string  GetConnString
    {
         get
        {
             return  ConfigurationManager.AppSettings[GetDBType];
        }
    }
     #endregion
     ///   <summary>
     ///  数据库连接字符串
     ///   </summary>
     private   string  ConnString  =   string .Empty;

     public  OleDbHepler()
    {
        ConnString  =   string .Format( " Provider=Microsoft.Jet.OleDb.4.0;Data Source={0}{1};Persist Security Info=True; " , AppDomain.CurrentDomain.BaseDirectory, GetConnString);
    }

     ///   <summary>
     ///  获取数据连接
     ///   </summary>
     ///   <returns></returns>
     public  OleDbConnection GetSqlConnection()
    {
         try
        {
             return   new  OleDbConnection(ConnString);
        }
         catch
        {
             throw   new  Exception( " 没有提供数据庫连接字符串Access！ " );
        }
    }

     ///   <summary>
     ///  公共查询数据函数Access版
     ///   </summary>
     ///   <param name="pp"> 查询字符串 </param>
     ///   <param name="RecordCount"> 返回记录总数 </param>
     ///   <returns> 返回记录集DataSet </returns>
     public  DataSet GetDataSetList(QueryParam pp,  out   int  RecordCount)
    {
        RecordCount  =   0 ;
        DataSet ds  =   new  DataSet();
         using  (OleDbConnection Conn  =  GetSqlConnection())
        {
            StringBuilder sb  =   new  StringBuilder();
             int  TotalRecordForPageIndex  =  pp.PageIndex  *  pp.PageSize;
             string  OrderBy;
             string  CutOrderBy;
             if  (pp.OrderType  ==   1 )
            {
                OrderBy  =   "  Order by  "   +  pp.Orderfld  +   "  desc  " ;
                CutOrderBy  =   "  Order by  "   +  pp.Orderfld  +   "  asc  " ;
            }
             else
            {
                OrderBy  =   "  Order by  "   +  pp.Orderfld  +   "  asc  " ;
                CutOrderBy  =   "  Order by  "   +  pp.Orderfld  +   "  desc  " ;
            }
            sb.AppendFormat( " SELECT * FROM (SELECT TOP {0} * FROM (SELECT TOP {1} {2}    FROM {3} {4} {5}) TB2    {6}) TB3 {5}  " , pp.PageSize, TotalRecordForPageIndex, pp.ReturnFields, pp.TableName, pp.Where, OrderBy, CutOrderBy);
            OleDbCommand cmd  =   new  OleDbCommand();
            OleDbDataAdapter dr  =   new  OleDbDataAdapter();
            cmd.Connection  =  Conn;
            cmd.CommandText  =  sb.ToString();
            Conn.Open();
            dr.SelectCommand  =  cmd;
           
            dr.Fill(ds, pp.TableName);
            dr.Dispose();
            cmd.Parameters.Clear();
             //  取记录总数
            cmd.CommandText  =   string .Format( " SELECT Count(1) From {0} {1} " , pp.TableName, pp.Where);
            RecordCount  =  Convert.ToInt32(cmd.ExecuteScalar());
            dr.Dispose();
            cmd.Dispose();
            Conn.Dispose();
            Conn.Close();
        }
         return  ds;
    }
}

 

前台数据显示，分页控件采用AspNetPager,具体如何使用该控件大家上网查，资料很多。

 

代码

< body >
     < form  id ="form1"  runat ="server" >
         < asp:GridView  ID ="GridView1"  runat ="server"  CellPadding ="4"  ForeColor ="#333333"  GridLines ="None"  Width ="98%" >
             < RowStyle  BackColor ="#FFFBD6"  ForeColor ="#333333"   />
             < FooterStyle  BackColor ="#990000"  Font-Bold ="True"  ForeColor ="White"   />
             < PagerStyle  BackColor ="#FFCC66"  ForeColor ="#333333"  HorizontalAlign ="Center"   />
             < SelectedRowStyle  BackColor ="#FFCC66"  Font-Bold ="True"  ForeColor ="Navy"   />
             < HeaderStyle  BackColor ="#990000"  Font-Bold ="True"  ForeColor ="White"   />
             < AlternatingRowStyle  BackColor ="White"   />
         </ asp:GridView >
      
         < div >
             < webdiyer:AspNetPager  ID ="AspNetPager1"  runat ="server"  OnPageChanged ="AspNetPager1_PageChanged" >
             </ webdiyer:AspNetPager >
         </ div >
     </ form >
</ body >

 

后台实现数据绑定

 

代码

  protected   void  Page_Load( object  sender, EventArgs e)
    {
         if  ( ! Page.IsPostBack)
        {
            BindData();           
        }
    }
     private   void  BindData()
    {
        QueryParam qp  =   new  QueryParam();
        qp.TableName  =   " t_users " ;
        qp.Orderfld  =   " UserID " ;
        qp.ReturnFields  =   " * " ;
        qp.Where  =  SearchTerms;
        qp.PageIndex  =  AspNetPager1.CurrentPageIndex;
        qp.PageSize  =  AspNetPager1.PageSize;
         int  RecordCount  =   0 ;
        DataSet ds  =   new  OleDbHepler().GetDataSetList(qp,  out  RecordCount);
        GridView1.DataSource  =  ds;
        GridView1.DataBind();
         this .AspNetPager1.RecordCount  =  RecordCount;
    }
     protected   void  AspNetPager1_PageChanged( object  sender, EventArgs e)
    {
        BindData();
    }

     ///   <summary>
     ///  查询条件
     ///   </summary>
     private   string  SearchTerms
    {
         get
        {
             if  (ViewState[ " SearchTerms " ]  ==   null )
                ViewState[ " SearchTerms " ]  =   "  Where 1 = 1 " ;
             return  ( string )ViewState[ " SearchTerms " ];
        }
         set  { ViewState[ " SearchTerms " ]  =  value; }
    }

 

一切搞定。