public static void Remove()
{
var strings = new WeakRefCollection <string>();
strings.Add("a");
Assert.True(strings.Remove("a"));
Assert.False(strings.Remove("a"));
// comparer parameter is actually used
strings.Add("b");
Assert.True(strings.Remove("B", StringComparer.OrdinalIgnoreCase));
}
/// <summary>
/// Enqueues <see cref="UnhandledExceptionEvent"/> for unhandled exceptions thrown on the specified <see cref="Dispatcher"/>.
/// </summary>
/// <param name="dispatcher">The dispatcher to catch unhandled exceptions from, or <c>null</c> for the UI dispatcher.</param>
/// <param name="raiseEvents"><c>true</c> to make sure unhandled exceptions are enqueued; <c>false</c> to make sure they are not.</param>
public static void RaiseUnhandledExceptionEventsFromDispatcher(Dispatcher dispatcher = null, bool raiseEvents = true)
{
if (dispatcher.NullReference())
{
dispatcher = Application.Current?.Dispatcher;
if (dispatcher.NullReference())
{
throw new InvalidOperationException("Could not determine UI dispatcher! (Application.Current is not available)");
}
}
lock ( dispatchersRaisingUnhandledEvents )
{
if (raiseEvents)
{
if (!dispatchersRaisingUnhandledEvents.Contains(dispatcher))
{
dispatchersRaisingUnhandledEvents.Add(dispatcher);
dispatcher.UnhandledException += OnDispatcherUnhandledException;
}
}
else
{
if (dispatchersRaisingUnhandledEvents.Remove(dispatcher))
{
dispatcher.UnhandledException -= OnDispatcherUnhandledException;
}
}
}
}