如何阅读HTML标记中的web.config APP密钥设置 [英] How to read web.config APP key settings in HTML markup

问题描述

我有一个使用第三方activeX控件的ASP.NET网站。我必须将一些参数传递给HTML页面中的OBJECT标签。如果我硬编码这些参数到HTML一切正常。

I have an ASP.NET site which uses a 3rd party activeX control. I have to pass a few parameters to the OBJECT tag in the HTML page. If i hardcode these parameters into the HTML everything works.

我想将这些参数放在我的web.config中，并带有应用程序设置键/值对。

I would like to place the parameters in my web.config with app settings "key/value" pairs.

我的问题是我无法读取HTML标记中的应用程序键设置，以成功传递它们作为参数。我可以从后面的服务器端代码读取它们。

My problem is i cannot read the app key setting in the HTML markup to succesfully pass them in as parameters. I can read them fine from server side code behind.

在客户端HTML标记中读取这些设置的正确方法是什么？

What's the correct way to read these settings in the client side HTML markup ?

谢谢

推荐答案

除了使用<％= ConfigurationManager.AppSettings [MyAttribute]％> ，正如其他人所指出的，您也可以使用表达式构建器 。语法有点不同。您可以使用<％$ AppSettings：MyAttribute％> 来代替<％= ...％> ，如下所示：

In addition to using <%=ConfigurationManager.AppSettings["MyAttribute"]%>, as others have noted, you can also use expression builders. The syntax is a little different. Instead of <%=...%> you use <%$ AppSettings: MyAttribute %>, like so:

<object id="myObjectID attr="<%$ AppSettings: MyAttribute %>" ...>

如果您只是将appSettings值直接转储到静态HTML中（正如我认为的那样在这个例子中，这两种方法是相同的。

If you are just dumping an appSettings value directly into static HTML (as I presume you are in this example), these two approaches are identical for all practical purposes.

然而，表达式构建器的好处在于您可以使用它们声明性地分配appSettings值到Web控件属性， 对<％= ...％> 语法所做的一切。也就是说，使用表达式构建器你可以这样做：

What is nice about expression builders, though, is that you can use them to declaratively assign appSettings values to Web control properties, something you cannot do with the <%=...%> syntax. That is, with expression builders you can do something like:

<asp:Label runat="server" ... Text="<%$ AppSettings: MyAttribute %>" />

您可以不是做：

Whereas you could not do:

<asp:Label runat="server" ... Text="<%=ConfigurationManager.AppSettings["MyAttribute"]%>" />

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