Question

IM not a C# programmer by nature but I do ok with it for what i need. Im trying to Learn WPF and my question is, Can I Declare my classes in App.xaml and access it from all of my separate controls? Im primarily interested in this because I would like ot be about to have one LogWriter and let all of them talk to it.

<!-- App.xaml -->
<Application x:Class="MyAPP.App"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:src="clr-namespace:LogWriter"
         StartupUri="MainWindow.xaml">
<Application.Resources>
 <src:LogWriter x:Name="LogWriter"/> 
</Application.Resources>
</Application>

Answer 1

Set x:Key, use StaticResource to reference. Application.Resources are accessible anywhere in the application.