分页问题，详细请看内容（在线等）

Question

分页控件代码不是很熟悉，现在遇到一个很傻的情况。数据源是用DataSource
并附上分页源代码分页源代码太长，没有办法贴出来，我贴在回贴里
我现在遇到的问题我在页面里使用了两个分面引用
代码如下：
<uc1:Pager ID="Pager1" runat="server" ControlToBePaged="list1" DataSource="<%# GetImageList() %>" NumbersCount="5" PageSize="20" SkinPath="~/PagerSkin1.ascx" /><uc1:Pager ID="Pager2" runat="server" ControlToBePaged="list1" DataSource="<%# GetImageList() %>" NumbersCount="5" PageSize="20" SkinPath="~/PagerSkin1.ascx" />分页代码可以正常显示出来，但我用其中任何一个点击分页，另一个没有同步。这个问题要如何改呢。我是一个.net新手，这样的问题没有做过，请高手可以附上要修改的代码嘛。

Answer 1

using System;
using System.Data;
using System.Configuration;
using System.Collections;
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.ComponentModel;
using System.Reflection;
using System.Collections.Generic;namespace PumpersShow {
    public partial class Pager: CtrlBase {
        protected void Page_Load(object sender, EventArgs e) {
            
        }        [IDReferenceProperty, TypeConverter(typeof(ControlIDConverter)),
            DefaultValue("")]
        public string ControlToBePaged {
            get {
                object obj1 = this.ViewState["ControlToBePaged"];
                if (obj1 != null) {
                    return (string)obj1;
                }
                return string.Empty;
            }
            set {
                this.ViewState["ControlToBePaged"] = value;
            }
        }        public string SkinPath {
            get {
                string s = (string)ViewState["SkinPath"];
                return (s == null) ? "" : s;
            }
            set {
                ViewState["SkinPath"] = value;
            }
        }        protected override void OnInit(EventArgs e) {
            base.OnInit(e);            if (SkinPath.Length > 0) {
                try {
                    UserControl skin = LoadControl(SkinPath) as UserControl;
                    FormView fv = skin.FindControl("formView1") as FormView;
                    this.formView1.InsertItemTemplate = fv.InsertItemTemplate;
                } catch { }
            }
            formView1.ItemCommand += new FormViewCommandEventHandler(formView1_ItemCommand);
            formView1.ItemCreated += new EventHandler(formView1_ItemCreated);           
        }        // 附加事件绑定。
        void formView1_ItemCreated(object sender, EventArgs e) {
            Literal litRecordCount = formView1.FindControl("litRecordCount") as Literal;            if (litRecordCount != null) {
                litRecordCount.Text = RecordCount.ToString();
            }            Literal litPageNumber = formView1.FindControl("litPageNumber") as Literal;            if (litPageNumber != null) {
                litPageNumber.Text = CurrentPage.ToString();
            }
            
            Literal litPageCount = formView1.FindControl("litPageCount") as Literal;            if (litPageCount != null) {
                litPageCount.Text = PageCount.ToString();
            }            Repeater rptPageNumbers = formView1.FindControl("rptPageNumbers") as Repeater;            if (rptPageNumbers != null) {
                rptPageNumbers.DataSource = GetPageNumbers();
                rptPageNumbers.ItemCommand += new RepeaterCommandEventHandler(rptPageNumbers_ItemCommand);
                rptPageNumbers.ItemDataBound += new RepeaterItemEventHandler(rptPageNumbers_ItemDataBound);
            }           
        }        void rptPageNumbers_ItemDataBound(object sender, RepeaterItemEventArgs e) {
            LinkButton btnPageNumber = e.Item.FindControl("btnPageNumber") as LinkButton;
            if (btnPageNumber != null) {
                btnPageNumber.Text = e.Item.DataItem.ToString();
                btnPageNumber.CommandArgument = e.Item.DataItem.ToString();
            }
        }

Answer 2

private DataTable _dataSource;        public DataTable DataSource {
            get { return _dataSource; }
            set {
                _dataSource = value;
            }
        }        protected string[] GetPageNumbers() {
            int max = NumbersCount;
            int start = 0;
            int end = 0;            if (max >= PageCount) {
                start = 1;
                end = PageCount;
            } else {
                if (PageCount - CurrentPage + 1 < max) {
                    start = PageCount - max + 1;
                    end = PageCount;
                } else if (CurrentPage < max) {
                    start = 1;
                    end = max;
                } else {
                    start = CurrentPage;
                    end = CurrentPage + max - 1;
                }
            }
            List<string> numbers = new List<string>();
            for (int i = start; i <= end; i++) {
                numbers.Add(i.ToString());
            }            return numbers.ToArray();
        }        protected void formView1_ItemCommand(object sender, FormViewCommandEventArgs e) {
            if (e.CommandName == "Page") {
                switch (e.CommandArgument.ToString()) {
                    case "First":
                        CurrentPage = 1;
                        break;                    case "Prev":
                        int currentPage = CurrentPage - 1;
                        if (currentPage < 1) currentPage = 1;
                        CurrentPage = currentPage;
                        break;                    case "Next":
                        int currentPage2 = CurrentPage + 1;
                        if (currentPage2 > PageCount) currentPage2 = PageCount;
                        CurrentPage = currentPage2;
                        break;                    case "Last":
                        CurrentPage = PageCount;
                        break;                    default: // 直接回传数字的情况
                        CurrentPage = int.Parse(e.CommandArgument.ToString());
                        break;
                }
                DataBind();
            }
        }        // event bubbling.
        protected void rptPageNumbers_ItemCommand(object sender, RepeaterCommandEventArgs e) {
            Repeater rpt = (Repeater)sender;
            FormViewCommandEventHandler handler = formView1_ItemCommand;
            handler(formView1, new FormViewCommandEventArgs(rpt, e));
        }
        
        protected override void OnDataBinding(EventArgs e) {
            base.OnDataBinding(e);            BindList();
        }        #region 分页属性        /// <summary>
        /// 中间显示的页码最大数目
        /// </summary>
        public int NumbersCount {
            get {
                return (ViewState["NumbersCount"] == null) ?
                    10 : (int)ViewState["NumbersCount"];
            }
            set {
                ViewState["NumbersCount"] = value;
            }
        }        /// <summary>
        /// 页大小
        /// </summary>
        public int PageSize {
            get {
                return (ViewState["PageSize"] == null) ?
                    10 : (int)ViewState["PageSize"];
            }
            set {
                ViewState["PageSize"] = value;
            }
        }        /// <summary>
        /// 总页数
        /// </summary>
        protected int PageCount {
            get {
                return (ViewState["PageCount"] == null) ?
                    1 : (int)ViewState["PageCount"];
            }
            set { ViewState["PageCount"] = value; }
        }        /// <summary>
        /// 总记录数
        /// </summary>
        protected int RecordCount {
            get {
                return (ViewState["RecordCount"] == null) ?
                    1 : (int)ViewState["RecordCount"];
            }
            set { ViewState["RecordCount"] = value; }
        }        /// <summary>
        /// 当前页
        /// </summary>
        protected int CurrentPage {
            get {
                return (ViewState["CurrentPage"] == null) ?
                    1 : (int)ViewState["CurrentPage"];
            }
            set { ViewState["CurrentPage"] = value; }
        }
        #endregion        private void BindList() {
            PagedDataSource pds = new PagedDataSource();
            pds.DataSource = DataSource.DefaultView;            pds.AllowPaging = true;
            pds.PageSize = PageSize;            pds.CurrentPageIndex = CurrentPage - 1;            PageCount = pds.PageCount;
            RecordCount = DataSource.Rows.Count;            // 方法1：引发分页事件
            //
            //PageIndexChangedEventArgs e = new PageIndexChangedEventArgs();
            //e.PagedDataSource = pds;
            //OnPageIndexChanged(e);            // 方法2：用反射（限制了被分页的控件必须有 DataSource 属性）
            //
            Control c = this.NamingContainer.FindControl(ControlToBePaged);
            if (c == null)
                throw new Exception("没有设置要分页的控件");
            
            PropertyInfo pi = c.GetType().GetProperty("DataSource");
            
            if(pi == null)
                throw new Exception("目标控件没有 DataSource 属性");
            
            pi.SetValue(c, pds, null);
            c.DataBind();
        }        // 方法1 的相关代码：
        //public event EventHandler<PageIndexChangedEventArgs> PageIndexChanged
        //{
        //    add
        //    {
        //        Events.AddHandler(PageIndexChangedEvent, value);
        //    }
        //    remove
        //    {
        //        Events.RemoveHandler(PageIndexChangedEvent, value);
        //    }
        //}        //private static object PageIndexChangedEvent = new object();        //public void OnPageIndexChanged(PageIndexChangedEventArgs e)
        //{
        //    EventHandler<PageIndexChangedEventArgs> handler = Events[PageIndexChangedEvent]
        //        as EventHandler<PageIndexChangedEventArgs>;        //    if (handler != null)
        //    {
        //        handler(this, e);
        //    }
        //}
    }    //public class PageIndexChangedEventArgs : EventArgs
    //{
    //    private PagedDataSource _pds;    //    public PagedDataSource PagedDataSource
    //    {
    //        get { return _pds; }
    //        set { _pds = value; }
    //    }
    //}
}

Answer 3

原因应该是两个控件是相互独立的，点击一个控件的分页按钮后引发了分页事件，但另一个控件却没有引发，你可以试试我写的 AspNetPager 免费自定义的分页控件，设置好一个控件的属性后另一个控件只要将它的CloneFrom属性指向第一个控件的ID就可以同步，不需要再设置相应的属性及编写事件处理程序了，可以从这里下载示例及文档：http://www.webdiyer.com