Events that you should be using to get UnhandledExceptions

UnhandledException.cs

// .NET/CLR app domains
// You - always want to be logging these errors!
AppDomain.CurrentDomain.UnhandledException += (s,e) => {};

// Framework specific handlers
System.Windows.Application.Current.DispatcherUnhandledException += (s,e) => {}; // WPF
System.Windows.Forms.Application.ThreadException += (s,e) => {}; // Windows Forms
System.Threading.Tasks.TaskScheduler.UnobservedTaskException += (s,e) => {}; // TPL - not really very imporant
// ASP.NET (i'm guessing you hook into this in your Global.asx?)