Home > Article > Backend Development > Summary of three paging methods in Asp.Net
Usually there are three methods of paging, including asp.net's own data display space such as GridView and other paging, third-party paging controls such as aspnetpager, stored procedure paging, etc. Here are summaries.
The first one: Use GridView’s own paging. This is the simplest paging method.
Front-end method:
<asp:GridView ID="GridView1" AllowPaging="true" runat="server" onpageindexchanging="GridView1_PageIndexChanging" PageSize="3"> </asp:GridView>
Backend method:
Code
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using JXSoft.TicketManage.Model; using JXSoft.TicketManage.BLL; using System.Text.RegularExpressions; using System.Data; namespace JXSoft.TicketManage.Web { public partial class Test : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if(!IsPostBack) { BindData(); } } protected void BindData() { DataTable dt=new DataTable(); dt.Columns.Add("ID"); dt.Columns.Add("Name"); for (int i = 0; i < 10;i++ ) { dt.Rows.Add(i.ToString(), i.ToString()); } this.GridView1.DataSource = dt; this.GridView1.DataBind(); } protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e) { this.GridView1.PageIndex = e.NewPageIndex; BindData(); } } }
Second: Use AspNetPager.dll with personalized display for paging
Aspnetpager needs to be added here Reference to .dll
Front desk:
<form id="form1" runat="server"> <div> <asp:GridView ID="GridView1" runat="server" > </asp:GridView> <webdiyer:AspNetPager ID="AspNetPager1" runat="server" CustomInfoHTML="第%CurrentPageIndex%页,共%PageCount%页,每页%PageSize%条" FirstPageText="首页" LastPageText="尾页" LayoutType="Table" NextPageText="下一页" onpagechanging="AspNetPager1_PageChanging" PageIndexBoxType="DropDownList" PagingButtonLayoutType="Span" PrevPageText="上一页" ShowCustomInfoSection="Left" ShowPageIndexBox="Always" SubmitButtonText="Go" PageSize="4" TextAfterPageIndexBox="页" TextBeforePageIndexBox="转到"> </webdiyer:AspNetPager> </div> </form>
Backend:
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using JXSoft.TicketManage.Model; using JXSoft.TicketManage.BLL; using System.Text.RegularExpressions; using System.Data; namespace JXSoft.TicketManage.Web { public partial class Test : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if(!IsPostBack) { BindData(); } } protected void BindData() { DataTable dt=new DataTable(); dt.Columns.Add("ID"); dt.Columns.Add("Name"); for (int i = 0; i < 10;i++ ) { dt.Rows.Add(i.ToString(), i.ToString()); } DataSet ds = new DataSet(); ds.Tables.Add(dt); Pager(this.GridView1, this.AspNetPager1, ds); } protected void Pager(GridView dl, Wuqi.Webdiyer.AspNetPager anp, System.Data.DataSet dst) { PagedDataSource pds = new PagedDataSource(); pds.DataSource = dst.Tables[0].DefaultView; pds.AllowPaging = true; anp.RecordCount = dst.Tables[0].DefaultView.Count; pds.CurrentPageIndex = anp.CurrentPageIndex - 1; pds.PageSize = anp.PageSize; dl.DataSource = pds; dl.DataBind(); } protected void AspNetPager1_PageChanging(object src, Wuqi.Webdiyer.PageChangingEventArgs e) { AspNetPager1.CurrentPageIndex = e.NewPageIndex; BindData(); } } }
Third method: Use AspNetPager combined with stored procedures for paging
This method of paging is slightly more complicated, but it can be dealt with A relatively large amount of data.
Front desk:
<asp:GridView ID="GridView1" runat="server" CssClass="GridTable" AutoGenerateColumns="false" onrowdatabound="GridView1_RowDataBound" > </asp:GridView> <webdiyer:AspNetPager ID="AspNetPager1" runat="server" CustomInfoHTML="第%CurrentPageIndex%页,共%PageCount%页,每页%PageSize%条" FirstPageText="首页" LastPageText="尾页" LayoutType="Table" NextPageText="下一页" onpagechanged="AspNetPager1_PageChanged" PageIndexBoxType="DropDownList" PagingButtonLayoutType="Span" PrevPageText="上一页" ShowCustomInfoSection="Left" ShowPageIndexBox="Always" SubmitButtonText="Go" PageSize="4" TextAfterPageIndexBox="页" TextBeforePageIndexBox="转到"> </webdiyer:AspNetPager>
Backend:
//绑定方法中需要传递aspnetpager的两个属性 protected void DataBind(){ DataSet ds = reportQueryBLL.GetTcikDetailReport(this.txtStartDate.Text,this.txtEndDate.Text,int.Parse( this.DropDownListPartment1.SelectedValue), this.txtPayPerson1.Text,this.txtTicketNum.Text,this.txtTicketNo.Text, AspNetPager1.StartRecordIndex,AspNetPager1.EndRecordIndex);//注意最后两个参数是aspnetpager的属性。 this.GridView1.DataSource = ds; this.GridView1.DataBind(); } //分页控件的页索引变化事件 protected void AspNetPager1_PageChanged(object src, EventArgs e) { BindDetailReportToGv(); } //page_base中需要加载首次的数据条数 DataSet ds = reportQueryBLL.GetDetail(this.txtStartDate.Text, this.txtEndDate.Text, int.Parse(this.DropDownListPartment1.SelectedValue), this.txtPayPerson1.Text, this.txtTicketNum.Text, this.txtTicketNo.Text); this.AspNetPager1.RecordCount = ds.Tables[0].Rows.Count; BindDetailReportToGv();
The stored procedure used here is more complicated, because the SQL statement cannot be placed in the view, and the results cannot be found directly from the table. This The stored procedure is a bit abnormal. If anyone sees it, I hope they can give some advice.
In fact, the core of the stored procedure is:
Create PROCEDURE [dbo].[P_GetPagedOrders2005] (@startIndex INT, @endindex INT ) AS select * from (SELECT ROW_NUMBER() OVER(ORDER BY IPid DESC) AS rownum, [IPid],[IPFrom],[IPTo],[IPLocation],[IPCity],[IPToNumber],[IPFromNumber] from IPInfo) as U WHERE rownum between @startIndex and @endIndex GO
Code
--下方可以忽略 --我用到的是存储过程: set ANSI_NULLS ON set QUOTED_IDENTIFIER ON go create PROCEDURE [dbo].[pro_pager] (@startIndex INT, @endindex INT, @strwhere varchar(200) ) AS SELECT tb_On_Tick_Info.On_Tick_ID_Int,tb_On_Tick_Info.On_Tick_SellDatetime_Dtm,tb_On_Tick_Info.On_Tick_TicketsNum_Str, tb_Department_Info.Dept_Name_Str, tb_User_Info.User_Name_Str, tb_On_Tick_Info.On_Tick_SellNumber_Str, tb_On_Tick_Info.On_Tick_ShouldPay_Dec, tb_On_Tick_Info.On_Tick_Count_Int, tb_On_Tick_Info.On_Tick_Discount_Dec, tb_On_Tick_Details.On_Tick_Details_StartNo_Int, CHARINDEX(N'a', tb_On_Tick_Info.On_Tick_Note_Text) AS Expr3, tb_User_Info_1.User_Name_Str AS Expr1, tb_Ticket_Type.TicketType_Name_Dec, COUNT( tb_On_Tick_Details.On_Tick_Details_ID_Int) AS Expr2 ,tb_Department_Info.Dept_ID_Int into #temp FROM tb_User_Info INNER JOIN tb_On_Tick_Info ON tb_User_Info.User_ID_Int = tb_On_Tick_Info.On_Tick_SellPerson_Int INNER JOIN tb_Department_Info ON tb_User_Info.User_DepartID_Int = tb_Department_Info.Dept_ID_Int INNER JOIN tb_User_Info AS tb_User_Info_1 ON tb_On_Tick_Info.On_Tick_PayPerson_Int = tb_User_Info_1.User_ID_Int INNER JOIN tb_On_Tick_Details ON tb_On_Tick_Info.On_Tick_SellNumber_Str = tb_On_Tick_Details.On_Tick_SellNumber_Str INNER JOIN tb_Ticket_Type ON tb_On_Tick_Details.On_Tick_Details_TicketsType_Int = tb_Ticket_Type.TicketType_ID_Int where 1=1 +@strwhere GROUP BY tb_On_Tick_Info.On_Tick_SellDatetime_Dtm,tb_On_Tick_Info.On_Tick_TicketsNum_Str, tb_Department_Info.Dept_Name_Str, tb_User_Info.User_Name_Str, tb_On_Tick_Info.On_Tick_SellNumber_Str, tb_On_Tick_Info.On_Tick_ShouldPay_Dec, tb_On_Tick_Info.On_Tick_Count_Int, tb_On_Tick_Info.On_Tick_Discount_Dec, CHARINDEX(N'a', tb_On_Tick_Info.On_Tick_Note_Text), tb_User_Info_1.User_Name_Str, tb_Ticket_Type.TicketType_Name_Dec, tb_On_Tick_Details.On_Tick_Details_StartNo_Int ,tb_Department_Info.Dept_ID_Int,tb_On_Tick_Info.On_Tick_ID_Int declare @sql varchar(8000) set @sql = 'select CONVERT(varchar(12) , On_Tick_SellDatetime_Dtm, 111 ) as On_Tick_SellDatetime_Dtm,Dept_Name_Str,User_Name_Str,On_Tick_SellNumber_Str,convert(varchar(15), On_Tick_ShouldPay_Dec) as On_Tick_ShouldPay_Dec,On_Tick_Count_Int,On_Tick_Discount_Dec' select @sql=@sql+',sum(case tickettype_name_dec when '''+tickettype_name_dec+''' then expr2 else 0 end) ['+tickettype_name_dec+']' from (select distinct tickettype_name_dec from tb_Ticket_Type ) as a set @sql=@sql+' ,expr3,Expr1,On_Tick_TicketsNum_Str,Dept_ID_Int,On_Tick_ID_Int into ##t from #temp group by On_Tick_SellDatetime_Dtm,Dept_Name_Str,On_Tick_TicketsNum_Str,User_Name_Str,On_Tick_SellNumber_Str,On_Tick_ShouldPay_Dec,On_Tick_Count_Int, On_Tick_Discount_Dec ,expr3,Expr1,Dept_ID_Int,On_Tick_ID_Int order by On_Tick_SellDatetime_Dtm ' exec( @sql ) --select * from ##t select * from (SELECT ROW_NUMBER() OVER(ORDER BY on_tick_id_int DESC) AS rownum, * from ##t) as U WHERE rownum between @startIndex and @endIndex drop table ##t
For more related articles summarizing the three paging methods in Asp.Net, please pay attention to the PHP Chinese website!