private void invokeOnOpen()
{
if (OnOpen == null)
{
return;
}
try
{
var members = OnOpen.GetInvocationList().Cast <Func <Task> >();
Task.WhenAll(members.Select(x => x()))
.ContinueWith(t => InvokeOnError(t.Exception), TaskContinuationOptions.OnlyOnFaulted);
//.Wait(0);
}
catch (Exception ex) when(ex.InnerException is TaskCanceledException)
{
}
}
