Html 如何在后面的代码中访问span id
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How to access span id in code behind
提问by NealR
I have an asp website with the following control:
我有一个带有以下控件的asp网站：
<span id="expTrainingShow" class="clsLink" style="margin-left: 20px;" onclick="GridChanger();">
+ Show Expired Continuing Education</span>
I want to hide this based on a condition set in the code behind. Can I access a span id like that? (the website is built using visual basic)
我想根据后面代码中设置的条件隐藏它。我可以访问这样的跨度 ID 吗？（该网站是使用visual basic构建的）
回答by Tim Schmelter
You can use a Labelinstead of a html-span (which is also rendered as span) or you could add runat="server".
您可以使用 aLabel而不是 html-span（也呈现为 span），或者您可以添加runat="server".
<span id="expTrainingShow" runat="server" class="clsLink" style="margin-left: 20px;" onclick="GridChanger();" ></span>
somewhere in codebehind(the span is a HtmlGenericControlon serverside):
代码隐藏中的某个地方（跨度HtmlGenericControl在服务器端）：
expTrainingShow.InnerHtml = yourText ' set the text '
or
或者
expTrainingShow.Visible = False ' hide it '
Note that Visible=Falseon serverside means that the control is not rendered at all on clientside, hence it does not exist in the html and can be accessed only on serverside.
请注意，Visible=False在服务器端意味着控件根本不会在客户端呈现，因此它不存在于 html 中，只能在服务器端访问。
If you just want to hide it but render it anyway, you should use CSS or expTrainingShow.Style.Add("display","none").
如果你只是想隐藏它但无论如何都要渲染它，你应该使用 CSS 或expTrainingShow.Style.Add("display","none").
