2009-12-16 69 views
8

我已经通过网络读过,但没有找到解决以下问题的方法。我有这个示例页面(_ScriptManager.aspx)与ScriptManager,UpdatePanel,MultiView两个Views和两个LinkButtons两个视图之间切换。第二个视图包含一些我想为(_ScriptManager.js)加载JavaScript文件的功能。ScriptManager.RegisterClientScriptInclude在UpdatePanel中不起作用

因为我不知道用户是否会访问视图2我不想为每个请求静态包含JavaScript文件。我只想在需要时加载它。所以我需要在异步回发期间包含脚本文件,这是我使用ScriptManager.RegisterClientScriptInclude的原因。痛苦是:它不起作用。该脚本包含在某种程度上不在客户端上执行,以便不能使用里面的JavaScript函数。更糟的是,在这种情况下,我在ScriptManager.RegisterStartupScript中注册的脚本块不会被执行!这非常刺激。有趣的是,包含脚本和脚本块确实通过异步回传发送给客户端(Fiddler是我的朋友:-))并且脚本文件也被加载。但后来javascript似乎打破...

有没有人有线索或知道报告的错误?

_ScriptManager.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="_ScriptManager.aspx.cs" Inherits="Frontend.Web._Tests.ScriptManagerTest" %> 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 

<html xmlns="http://www.w3.org/1999/xhtml" > 
<head runat="server"> 
    <title></title> 
    <script src="http://ajax.microsoft.com/ajax/jQuery/jquery-1.3.2.min.js"></script> 
</head> 
<body> 
    <form id="form1" runat="server"> 
    <asp:ScriptManager runat="server" ID="scm"></asp:ScriptManager> 
    <asp:Label runat="server" ID="lbOut">Outside of UpdatePanel</asp:Label> 
    <div style="border: solid 1px red;"> 
     <asp:UpdatePanel runat="server" ID="up" UpdateMode="Conditional"> 
     <ContentTemplate> 
      <div> 
      <asp:LinkButton runat="server" ID="btnFirst">Show view 1</asp:LinkButton> 
      <asp:LinkButton runat="server" ID="btnSecond">Show view 2</asp:LinkButton> 
      </div> 
      <div> 
      <asp:MultiView runat="server" ID="mv"> 
       <asp:View runat="server" ID="vw1">First view - static content</asp:View> 
       <asp:View runat="server" ID="vw2"> 
       Second view - dynamically loaded content (between dashes): 
       <div>#<span id="divDyn"></span>#</div> 
       </asp:View> 
      </asp:MultiView> 
      </div> 
     </ContentTemplate> 
     </asp:UpdatePanel> 
    </div> 
    </form> 
</body> 
</html> 

_ScriptManager.js(在这里我只是添加一些动态内容到id = divDyn跨度):

function dynamic() { 
    alert('dynamic'); 
    $('#divDyn').text('Dynamic!'); 
} 

_ScriptManager.aspx .cs code-behind:

public partial class ScriptManagerTest : System.Web.UI.Page 
{ 
    protected void Page_Load(object sender, EventArgs e) 
    { 
     btnFirst.Click += delegate { mv.SetActiveView(vw1); }; 
     btnSecond.Click += delegate { mv.SetActiveView(vw2); }; 

     if (!IsPostBack) 
     { 
      // Test 1: does not work 
      mv.SetActiveView(vw1); 

      // Test 2: works, because required script is loaded on initial page request 
      //mv.SetActiveView(vw2); 
     } 
    } 

    protected override void OnPreRender(EventArgs e) 
    { 
     base.OnPreRender(e); 

     if (mv.GetActiveView() == vw2) 
     { 
      // Not calling the RegisterClientScriptInclude 
      // makes the alert work in both cases, but this is 
      // what it's all about: including script only when 
      // needed! 
      ScriptManager.RegisterClientScriptInclude(
       Page, Page.GetType(), "include-js", 
       ResolveClientUrl("~/ScriptManager.js")); 
      ScriptManager.RegisterStartupScript(
       this, GetType(), "call-dynamic", 
       "alert('hi there'); dynamic();", true);  
     } 
    } 
} 

回答

10

好吧,这是粉碎的:经过两个2小时的调查问题后,尝试使用ScriptManager的所有可能性,尝试使用jQuery,最后写出这个示例(因为真实世界的设置一直比较复杂),我现在发现this short blog post解决了我的问题 - 有一行添加到js文件包括:

_ScriptManager.js

function dynamic() { 
    alert('dynamic'); 
    $('#divDyn').text('Dynamic!'); 
} 
// notify that the script has been loaded <-- new! 
if (typeof (Sys) !== 'undefined') Sys.Application.notifyScriptLoaded(); 

好吧,也许这将是任何使用的人的否则在那里...

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