概述

在网上看到不少的这方面的例子，使Repeater控件象ListView控件一样支持DataPager分页。但是我试了不少，都失败了。所以我就花点时间来自己写了一个。下面是我的解决方案。

代码介绍

首先，我们建立一个用户控件，取名DataPagerRepeater。使其继承自Repeater 并引用System.Web.UI.WebControls.IPageableItemContainer 命名空间。(同时添加System.Web.Extensions引用)并输入以下代码

[ToolboxData("<{0}:DataPagerRepeater runat="server"    PersistentDataSource=true>
    ")]public class DataPagerRepeater : Repeater,        System.Web.UI.WebControls.IPageableItemContainer, INamingContainer{    public int MaximumRows { get { return ViewState["_maximumRows"] != null ?                                  (int)ViewState["_maximumRows"] : -1; } }    public int StartRowIndex { get { return ViewState["_startRowIndex"] != null ?                               (int)ViewState["_startRowIndex"] : -1; } }    public int TotalRows { get { return ViewState["_totalRows"] != null ?                                (int)ViewState["_totalRows"] : -1; } }    public bool PersistentDataSource {         get { return ViewState["PersistentDataSource"] != null ?               (bool)ViewState["PersistentDataSource"] : true; }        set { ViewState["PersistentDataSource"] = value; }    }    protected override void LoadViewState(object savedState)    {        base.LoadViewState(savedState);        if (Page.IsPostBack)        {            if (PersistentDataSource && ViewState["DataSource"] != null)            {                this.DataSource = ViewState["DataSource"];                this.DataBind();            }        }    }     public void SetPageProperties(int startRowIndex, int maximumRows, bool databind)    {        ViewState["_startRowIndex"] = startRowIndex;        ViewState["_maximumRows"] = maximumRows;        if (TotalRows > -1)        {            if (TotalRowCountAvailable != null)            {                TotalRowCountAvailable(this,                    new PageEventArgs((int)ViewState["_startRowIndex"],                    (int)ViewState["_maximumRows"], TotalRows));            }        }    }    protected override void OnDataPropertyChanged()    {         if (MaximumRows != -1)        {            this.RequiresDataBinding = true;        }        else            base.OnDataPropertyChanged();    }    protected override void RenderChildren(HtmlTextWriter writer)    {        if (MaximumRows != -1)        {            foreach (RepeaterItem item in this.Items)            {                if (item.ItemType == ListItemType.Item ||                     item.ItemType == ListItemType.AlternatingItem)                {                    item.Visible = false;                    if (item.ItemIndex >= (int)ViewState["_startRowIndex"] &&                         item.ItemIndex <= ((int)ViewState["_startRowIndex"] +                           (int)ViewState["_maximumRows"]))                    {                        item.Visible = true;                    }                }                else                {                    item.Visible = true;                }            }        }        base.RenderChildren(writer);    }    public override void DataBind()    {         base.DataBind();        if (MaximumRows != -1)        {            int i = 0;            foreach (object o in GetData())            {                i++;            }            ViewState["_totalRows"] = i;            if(PersistentDataSource)                ViewState["DataSource"] = this.DataSource;            SetPageProperties(StartRowIndex, MaximumRows, true);        }    }    protected override System.Collections.IEnumerable GetData()    {        return base.GetData();    }    public event System.EventHandler
    
      TotalRowCountAvailable;}
    

编译后在asp.net WebForm中使用方法如下：

     
      
      
 
         
        
          <%# Eval("Value") %> 
        
 
        
       
      
 
     
     
    
     
      
      
      
     
    

在后台事件中添加以下代码：

protected void Page_Load(object sender, EventArgs e) {    if(!IsPostBack)    {        System.Collections.SortedList SL = new System.Collections.SortedList();        SL.Add("val1","Text1");        SL.Add("val2","Text2");        SL.Add("val3","Text3");        SL.Add("val4","Text4");        SL.Add("val5","Text5");        SL.Add("val6","Text6");        SL.Add("val7","Text7");        SL.Add("val8","Text8");        SL.Add("val9","Text9");        rep1.DataSource = SL;        rep1.DataBind();    } }

全文完。翻译自CodeProject。