Avatar of jxbma
jxbma
Flag for United States of America asked on

How do I figure out a “DependencyProperty.UserValue” exception in my WPF/MVVM application?

I have a C#/.Net/WPF/MVVM application.

The application runs fine when running through VS 2015.

When I run the application standalone (on a different machine), I get the following exception at startup:


An unhandled exception of type "System.InvalidOperationException" occurred in WindowsBase.dll

Additional information "{DependencyProperty.UnserValue} is not a valid value for property "TopLevelItemTemplateKey"

What is really going on?

How do I debug this?

Thanks
.NET Programming* WPF* MVVM* xaml

Avatar of undefined
Last Comment
Paweł

8/22/2022 - Mon
ASKER CERTIFIED SOLUTION
Paweł

THIS SOLUTION ONLY AVAILABLE TO MEMBERS.
View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
See Pricing Options
Start Free Trial
GET A PERSONALIZED SOLUTION
Ask your own question & get feedback from real experts
Find out why thousands trust the EE community with their toughest problems.
Experts Exchange has (a) saved my job multiple times, (b) saved me hours, days, and even weeks of work, and often (c) makes me look like a superhero! This place is MAGIC!
Walt Forbes