How to bind XAML elements to custom class in Windows Store Apps?

Question

I am working on a Windows Store App and trying to bind some XAML elements to a custom class:

namespace My.Name.Space {
    public class AppSettings {
        private static AppSettings _instance = new AppSettings();
        public AppSettings Settings { get { return _instance; } 

        private static bool SomeOption {
            get {
                ...
                return option;
            }
        }
    }
}

<!-- ResourceDict will be merged to the Application.Resources -->
<ResourceDictionary 
   ...
   xmlns:myNS="clr-namespace:My.Name.Space">

   <myNS:AppSettings x:Key="AppSettings"/>
</ResourceDictionary>

<Button IsEnabled="{Binding Path=Settings.SomeOption, Source={StaticResource AppSettings} .../>

This works without any problem in a Windows Phone 8 App. But when trying to compile the same code in a Windows Store App the compiler says:

Unknown Type "AppSettings" in XML-Namespace "clr-namespace:My.Name.Space;assembly=MyAppProject, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"

So, what can I do to bind a XAML element to my Settings class?

Answer 1

I don't think you're doing anything wrong here.  Try restarting Visual Studio - I think this is a bug in the compiler.

---

Matt Small - Microsoft Escalation Engineer - Forum Moderator
If my reply answers your question, please mark this post as answered.

NOTE: If I ask for code, please provide something that I can drop directly into a project and run (including XAML), or an actual application project. I'm trying to help a lot of people, so I don't have time to figure out weird snippets with undefined objects and unknown namespaces.

Answer 2

Hi,

I solved the issue:

xmlns:myNS="clr-namespace:My.Name.Space">

has to be changed to:

xmlns:myNS="using:My.Name.Space">