I saw a tip by Tim Heuer on a StackOverflow question about how to show binding errors in the Output window of managed WinRT (e.g. Metro-style) XAML projects. Tim mentioned that:
You get this automatically for C++ applications and for managed applications you have to turn on unmanaged debugging to see them.
Since I had a hard time finding it, I thought I'd drop a quick image to help you find it. You have to go to your project properties and look at the Debug tab:
With this, you get the tried and true binding failures that you might already be used to in Silverlight or WPF. Wahoo!
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|Application Name||WilderBlog||Environment Name||Production|
|Application Ver||v4.0.30319||Runtime Framework||x86|
|App Path||D:\home\site\wwwroot\||Runtime Version||.NET Core 4.6.27514.02|
|Operating System||Microsoft Windows 10.0.14393||Runtime Arch||X86|