内容控制不是从内容页accessbile？ [英] Content control not accessbile from content page?

问题描述

我的内容网页看起来是这样的：

My content page looks like this:

<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Basket.aspx.cs" Inherits="Basket" Title="Untitled Page" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
</asp:Content>

现在，我想动态地添加一些控件，当页面加载的内容，所以我尝试以下code：

Now, I would like to add some controls dynamically to the content when page loads, so I am trying the following code:

  protected void Page_Load(object sender, EventArgs e)
  {
     Content2. // I want to add controls to it dynamically
  }

问题是，内容2 控制不是由编译器可见光和我正在错过指令或程序集引用错误。

The problem is that the Content2 control is not visible by the compiler and I am getting error about missing directive or assembly reference.

任何解决方案？

推荐答案

您不能得到一个参考的原因 ASP：内容控件是因为它不停留在当页面与母版相结合。基本上，ASP需要从内这些 ASP所有的控件：内容部分，并让他们的的ContentPlaceHolder 控制孩子的母版内。

The reason you can't get a reference to that asp:Content control is because it does not stay around when the page is combined with the masterpage. Basically ASP takes all the controls from inside these asp:Content sections and makes them children of the ContentPlaceholder controls inside the masterpage.

由于 MSDN 说：一个内容控制不被添加到在运行时控制层次。而是内容控件中的内容直接合并到相应的ContentPlaceHolder控件。

这意味着，如果你想要更多的控件添加到该部分中，您将获得在母版的的ContentPlaceHolder 控件的引用，并将它们添加到它。是这样的：

That means that if you want to add more controls to that section, you will have to get a reference to the ContentPlaceholder control in the masterpage and add them to it. Something like:

ContentPlaceHolder myContent = (ContentPlaceHolder)this.Master.FindControl("ContentPlaceHolder1");
myContent.Controls.Add(??);

注意，你所使用的 ContentPlaceHolderID 值，而不是 ID 的的asp：内容部分。

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