Unhandled exception
You can use DispatcherUnhandledException:
XAML (App.xaml):
<Application x:Class="App.App" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" StartupUri="wndMain.xaml" DispatcherUnhandledException="Application_DispatcherUnhandledException">Code Behind (App.xaml.cs/vb:
private void Application_DispatcherUnhandledException(object sender, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs e){ // Handle error here ... // Prevent default unhandled exception processing by WPF e.Handled = true;}Read up more here. Always do the correct amount of error handling in the first place though. Don't just let errors slip into this method.