WPF and XAML newbie here....
I need to tie a WPF Trigger or DataTrigger in XAML code into some C# code in a class other than the class of t
Your C# code looks fine, and you already have the XML NameSpace declaration referencing your MyApplication namespace, so:
You should just be able to access the enum value using the x:Static markup using the enum identifier as shown in this example (I like this example because it also shows how to use non-custom x:Static and how to do some tree traversal as well):
In your case your Markup for your enum should be:
Value="{x:Static my:SelectedReportType.DiagSummary}"