UpdatePanel 和母版页中的两个内容占位符区域

发布于 2024-11-01 14:25:00 字数 2102 浏览 1 评论 0原文

我有一个“旧版”ASP.NET 网站，我想对其进行一些改进。我想做的一个领域是页面更新 - 目前，它始终是整页更新，但我想开始使用部分更新。

我希望能够使用 ASP.NET UpdatePanel 来实现此目的 - 但我对如何让它为我工作有点困惑。

我有一个母版页，它定义了多个内容占位符 - 简化后如下所示：

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="Default.master.cs" Inherits="WebForms_Default" %>
<?xml version="1.0" encoding="utf-8" ?>
<!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>MyTitle</title>
</head>
<body>
   <form id="myForm" runat="server">
      <asp:ScriptManager ID="smgrMaster" runat="server" LoadScriptsBeforeUI="true">
         <Scripts>
            <asp:ScriptReference Path="~/Scripts/jquery-1.4.2.min.js" />
         </Scripts>
      </asp:ScriptManager>
      <asp:ContentPlaceHolder runat="server" ID="cphSearch" />
      <asp:ContentPlaceHolder runat="server" ID="cphContent" />
   </form>
</body>
</html>

在我的内容页面上，我的网格显示 cphContent 区域内的数据 - 以及我的 cphSearch 区域我有许多输入控件 - 一个RadioButtonList 和两个DropDowns。目前，只要这些控件中的某些内容发生更改，就会发出回发（它们设置了 AutoPostback="true"）。

我的问题是：如何告诉我的 UpdatePanel （我试图将其包裹在 cphContent 区域中的网格）“监听”来自这三个控件的回发来自cphSearch？

<asp:UpdatePanel>
   <ContentTemplate>
      <asp:GridView>
         // grid view defined here
      </asp:GridView>
   </ContentTemplate>
   <Triggers>
      <asp:AsyncPostBackTrigger ControlID=".. what values to put here?? .." />
      <asp:PostBackTrigger ControlID=".. - what values to put here?? .." />
   </Triggers>

当我添加时，我得到一个部分，但是 cphSearch 内容区域中的那些控件是不可见，所以我想我无法真正将它们添加为更新触发器，对吗？

要么我完全不明白（绝对有可能！），要么我错过了一个明显的步骤/技巧来让它发挥作用——或者这是不可能的。让我知道！

原文

I have a "legacy" ASP.NET site I'd like to improve a bit. One area I'd like to do something about is page updates - for now, it's always full page updates, but I'd like to start using partial updates.

I was hoping to be able to use the ASP.NET UpdatePanel for this - but I'm a bit stuck on how to get this to work for me.

I have a master page which defines several content placeholders - simplified it looks like this:

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="Default.master.cs" Inherits="WebForms_Default" %>
<?xml version="1.0" encoding="utf-8" ?>
<!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>MyTitle</title>
</head>
<body>
   <form id="myForm" runat="server">
      <asp:ScriptManager ID="smgrMaster" runat="server" LoadScriptsBeforeUI="true">
         <Scripts>
            <asp:ScriptReference Path="~/Scripts/jquery-1.4.2.min.js" />
         </Scripts>
      </asp:ScriptManager>
      <asp:ContentPlaceHolder runat="server" ID="cphSearch" />
      <asp:ContentPlaceHolder runat="server" ID="cphContent" />
   </form>
</body>
</html>

On my content page, my grid is showing the data inside the cphContent area - and in my cphSearch area I have a number of input controls - a RadioButtonList and two DropDowns. Whenever something in those controls changes, for now, a postback is issued (they have AutoPostback="true" set).

My problem is: how do I tell my UpdatePanel (which I'm trying to wrap around my grid in the cphContent area) to "listen" for postbacks from those three controls from cphSearch ?

<asp:UpdatePanel>
   <ContentTemplate>
      <asp:GridView>
         // grid view defined here
      </asp:GridView>
   </ContentTemplate>
   <Triggers>
      <asp:AsyncPostBackTrigger ControlID=".. what values to put here?? .." />
      <asp:PostBackTrigger ControlID=".. - what values to put here?? .." />
   </Triggers>

When I add my <asp:UpdatePanel>, I get a section <Triggers>, but those controls in the cphSearch content area aren't visible, so I guess I can't really add them as update triggers, correct?

Either I'm totally not getting it (absolutely possible!), or I'm missing an obvious step / trick to get this to work - or it's just not possible. Let me know!

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念﹏祤嫣 2024-11-08 14:25:00

我认为当您无法找到触发器的控制时，没有必要一直放置触发器某些事件只需使用updatepanel而不使用触发器

<asp:Content ID="Content1" ContentPlaceHolderID="cphSearch" runat="Server">
  <asp:UpdatePanel ID="updateSearch" runat="server">
    <ContentTemplate>
       your searching controls
    </ContentTemplate>
  </asp:UpdatePanel>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="cphContent" runat="Server">
  <asp:UpdatePanel ID="updateContent" runat="server">
    <ContentTemplate>
        your grid
    </ContentTemplate>
  </asp:UpdatePanel>
</asp:Content>

这个将更新整个网格、搜索控件，它还将处理 AutoPostBack 事件，但不会忘记放置 Update 控件来查看工作正在进行中...

i think its not necessary to put Triggers all the time when you are not able to find control for Triggers some event just use updatepanel without triggers

<asp:Content ID="Content1" ContentPlaceHolderID="cphSearch" runat="Server">
  <asp:UpdatePanel ID="updateSearch" runat="server">
    <ContentTemplate>
       your searching controls
    </ContentTemplate>
  </asp:UpdatePanel>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="cphContent" runat="Server">
  <asp:UpdatePanel ID="updateContent" runat="server">
    <ContentTemplate>
        your grid
    </ContentTemplate>
  </asp:UpdatePanel>
</asp:Content>

this will update whole grids, search controls and it will also handles AutoPostBack event but dnt forget to put Update <asp:UpdateProgress> control to see work is in process...

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