UpdatePanel僅在初始部分回傳時更新

我有一個主頁，它具有加載不同內容的用戶控件的各種佔位符。標題將是一個，主頁面內容是另一個。在主內容用戶控件內，它根據需要顯示的頁面加載各種其他用戶控件。UpdatePanel僅在初始部分回傳時更新

母版頁

<%@ Master Language="C#" AutoEventWireup="true" EnableViewState="true" CodeBehind="Admin.Master.cs" Inherits="SitefinityWebApp.Admin" %> 
<%@ Import Namespace="SitefinityWebApp.Model.Session" %> 

<!DOCTYPE html> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head id="Head1" runat="server"> 
</head> 
<body> 
    <form id="form1" runat="server"> 

     <!-- start of header --> 
     <section id="header"> 
      <asp:ContentPlaceHolder ID="cph_header" runat="server" /> 
     </section> 

     <!-- Site Content --> 
     <section id="contentWrapper"> 
      <asp:ContentPlaceHolder ID="cph_content" runat="server" /> 
     </section> 
    </form> 
</body> 
</html>

下面的頁面被加載到內容

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="CorpPendingApproval.ascx.cs" Inherits="SitefinityWebApp.userctrls.Admin.Dashboard.Corporate.CorpPendingApproval" %> 

<asp:UpdatePanel ID="PendingApprovalList" UpdateMode="Always" runat="server"> 
    <ContentTemplate> 
     <asp:HiddenField ID="hf_currentPage" runat="server" value="0" /> 
     <asp:HiddenField ID="hf_totalResults" runat="server" value="0" /> 

     <h2>Pending Approvals</h2> 
     <div class="corporateAdminPagination"> 
      <a ID="topPageBack" class="leftArrow" runat="server" onserverclick="PageBack"></a> 
      <asp:Label ID="topCurrentPageInfo" Text="" runat="server" /> 
      <a ID="topPageForward" class="rightArrow" runat="server" onserverclick="PageForward"></a> 
     </div> 

     <!-- Table Start --> 
     <table class="corporateAdminPendingApprovals" cellspacing="0"> 

      <!-- Table Heading --> 

      <!-- Example Binding Setup --> 
      <asp:Repeater ID="LowPriority" runat="server"> 
       <ItemTemplate> 
        <tr class="pendingApprovalListItem" 
         <!-- Repeater Bindings Here --> 
        </tr> 
       </ItemTemplate> 
      </asp:Repeater> 

      <!-- Table Footer --> 
      <tr class="pendingApprovalsFooter"> 

       <!-- Footer Pagination --> 
       <td width="221" class="corporateAdminPagination"> 
        <a ID="bottomPageBack" class="leftArrow" runat="server" onserverclick="PageBack"></a> 
        <asp:Label ID="bottomCurrentPageInfo" Text="" runat="server" /> 
        <a ID="bottomPageForward" class="rightArrow" runat="server" onserverclick="PageForward"></a> 
       </td>    
      </tr> 
     </table> 
     <!-- Table End -->   
    </ContentTemplate> 
</asp:UpdatePanel>

代碼背後上述用戶的控制

namespace SitefinityWebApp.userctrls.Admin.Dashboard.Corporate { 
    public partial class CorpPendingApproval : System.Web.UI.UserControl { 

     public int CurrentPage { 
      get { 
       return int.Parse(hf_currentPage.Value); 
      } 
      set { 
       hf_currentPage.Value = value.ToString(); 
      } 
     } 
     public int TotalResults { 
      get { 
       return int.Parse(hf_totalResults.Value); 
      } 
      set { 
       hf_totalResults.Value = value.ToString(); 
      } 
     } 

     //Sets default page values for pagination results 
     protected void Page_Load(object sender, EventArgs e) { 
      if (!IsPostBack) { 
       CurrentPage = 0; 
       TotalResults = GetResultSetCount(); 
       PopulatePageInfoTexts(); 
       PopulatePageWithResultSet(); 
      } 
     } 

     //Returns the count of the entire result set 
     private int GetResultSetCount() { 
      //Returns List<T> 
      //Omitted for brevity 
     } 

     //Moves the pagination back one page 
     protected void PageBack(object sender, EventArgs e) { 
      if (CurrentPage > 0) { 
       CurrentPage--; 
       PopulatePageInfoTexts(); 
       PopulatePageWithResultSet(); 
      } 
     } 

     //Moves the pagination forward one page 
     protected void PageForward(object sender, EventArgs e) { 
      if (CurrentPage < (int)(TotalResults/((CurrentPage + 1) * 20))) { 
       CurrentPage++; 
       PopulatePageInfoTexts(); 
       PopulatePageWithResultSet(); 
      } 
     } 

     //Displays info about number of results/pages for pagination 
     private void PopulatePageInfoTexts() { 
      //Logic omitted for brevity 
     } 

     //Displays result set based on current viewing page 
     private void PopulatePageWithResultSet() { 
      //Logic omited for brevity 

      //Bind to repeaters 
      TopPriority.DataSource = topPriority; 
      TopPriority.DataBind(); 
     } 
    } 
}

基本上，當單擊pageForward或pageBack按鈕時，它會更改隱藏字段中的值，並使用新的偏移量從DB請求數據，並將該數據綁定到UpdatePanel中的Repeater。我希望它調用服務器，增加當前頁面，並顯示新的結果。這僅在第一次點擊任何按鈕時才起作用。之後，在Chrome的DevTools中查看網絡調用和響應時HTML會正確返回，但是在第一次發佈後，HTML永遠不會在頁面上重新呈現......？

發生這種情況時發生錯誤，它來自jquery.cookie.js。這個文件的include沒有在整個項目中的位置，所以我猜測SiteFinity將它包含在某個捆綁的DLL中。我不知道這是否是問題的根源，但我認爲這與它有關。以下是在DevTools中顯示的錯誤

Uncaught TypeError: undefined is not a function: Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl09_TSM&compress=0&_TSM_CombinedScripts_=%3b%3bT…:559 
_checkBrowseAndEditState:function(){browseAndEditState=jQuery.cookie(this._browseAndEditCookieName);

在此先感謝您的幫助！

來源

2014-06-12 nathansizemore