如何以编程方式添加东西的ContentPlaceHolder？ [英] How to programatically add stuff to contentPlaceHolder?

问题描述

我有一个母版页和我所有的页面都继承它。
对于格式化，我认为从一个页面的不同到另外一个的ContentPlaceHolder内容的地方。

I have a master page and all of my pages are inheriting it. For formatting, I thought to place the content that differs from one page to another in a ContentPlaceHolder.

现在，我怎么能插入到一切呢？自从我计划从数据库中填充东西的ContentPlaceHolder我想我将不得不以编程方式做到这一点。

Now, how can I insert everything into that? Since I am planning to populate the ContentPlaceHolder with stuff from a database I suppose I will have to do it programatically.

1. 我怎样才能添加控件ContentPlace持有人？
   我检查了其他<一href=\"http://stackoverflow.com/questions/291037/set-aspcontentplaceholder-content-programatically\">answers,但我无法通过ID访问它。

1. How can I add controls to ContentPlace Holder? I checked other answers, but I cannot access it by its ID.

我应该使用多个ContentPlaceHolders从beggining？比方说，我想把电影。如果有只有一个所有的图像和描述和等级，矿石1的ContentPlaceHolder每一件事？

Should I use multiple ContentPlaceHolders from the beggining? Let's say I want to put movies. Should there be only one with all the images and descriptions and ratings, ore one ContentPlaceHolder for each thing?

我开到其他的解决方案，因为我有ASP没有经验。

I am opened to other solutions, as I have no experience with ASP.

推荐答案

老问题......但我只是碰到了这个问题，这是排名第一的职位，不断涌现在谷歌，所以图我加我因为别人的答案并没有我的情况下工作。

Old question... but I just ran into this issue and this was the #1 post that kept coming up on Google, so figure I'd add my answer since the others didn't work in my case.

下面是我做的，当一个普通＆LT; ASP：内容是行不通的（虽然在正常使用中，答案是@JayC你如何做到这一点）

Here is how I did it when a regular <asp:Content wouldn't work (though in normal use, the answer @JayC is how you do it):

母版有这个的ContentPlaceHolder ：

<asp:ContentPlaceHolder ID="ScriptsPlace" runat="server"></asp:ContentPlaceHolder>

不得不动态地从用户控件添加一些JavaScript。尝试使用的ContentPlaceHolder 直接给出这个错误：

分析器错误信息：内容控件必须是顶级的控制
  在内容页或引用主嵌套母版页
  页。

Parser Error Message: Content controls have to be top-level controls in a content page or a nested master page that references a master page.

所以我想从$ C $添加脚本C-后面。下面是的.ascx 文件页面加载：

So I wanted to add the script from the code-behind. Here is the Page Load for the .ascx file:

protected void Page_Load(object sender, EventArgs e)
{
    ContentPlaceHolder c = Page.Master.FindControl("ScriptsPlace") as ContentPlaceHolder;
    if (c != null)
    {
        LiteralControl l = new LiteralControl();
        l.Text="<script type=\"text/javascript\">$(document).ready(function () {js stuff;});</script>";
        c.Controls.Add(l);
    }
}

更新：因此，原来我不得不使用这个在更多的地方比我预想，并最终使用的方式，是更灵活/可读性。在用户控件本身，我刚刚结束了所需的JavaScript和其他任何与移动的常规 DIV 。

UPDATE: So it turns out I had to use this in more places than I expected, and ended up using a way that was much more flexible / readable. In the user control itself, I just wrapped the javascript and anything else that needed to be moved with a regular div.

<div id="_jsDiv" runat="server">
    $(document).ready(function() {
         //js stuff
    });
    Other server controls or HTML junk
</div>

然后是code后面会发现，DIV，然后将其移动到的ContentPlaceHolder 。

protected void Page_Load(object sender, EventArgs e)
{
    ContentPlaceHolder c = Page.Master.FindControl("ScriptsPlace") as ContentPlaceHolder;
    HtmlGenericCOntrol jsDiv = this.FindControl("_jsDiv") as HtmlGenericControl;
    if (c != null && jsDiv != null)
    {
        c.Controls.Add(jsDiv);
    }
}

我居然把一个自定义用户控件此code，我只是有我的普通用户控件从自定义用户控件继承，所以一旦我包的JavaScript /等用＆LT; DIV ID =_ jsDiv=服务器＆GT; ，自定义用户控件需要处理剩下的事情，我没有做在code任何用户控件的背后

I actually put this code in a custom user control, and I just have my regular user controls inherit from the custom user control, so once I wrap the javascript/etc with a <div id="_jsDiv" runat="server">, the custom user control takes care of the rest and I don't have to do anything in the code behind of the user control.

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