This has been bothering me for a while, maybe I am missing something.
The following throws an error with the commented attribute (expected >), but shouldn't I be able to do something like this?
<Label x:Name="Gaga"
FontSize="20"
<!--
Content="{Binding SomethingThatIsEmptyAtDesignTime"}
-->
Content="LookAtMe!"
/>
Because XAML is XML-based, and XML doesn't allow comments inside other markup. It's unfortunate, I agree; XML commenting leaves much to be desired.
You can't use a comment like that inside an element.
This is true to all XML, not just XAML.
Take a look at the XML Comments specification, which explicitly disallows this kind of markup.
http://www.w3.org/TR/REC-xml/#sec-comments
Comments can exist anywhere within the document, outside of other markup.
Hope that helps!
No, you shouldn't. XML doesn't work that way - a comment node isn't an attribute, and so it can't go where attributes should be.
