protected override void OnClosed(EventArgs e)
{
var res = Closed?.GetInvocationList();
if (res != null)
{
foreach (Delegate d in Closed?.GetInvocationList())
{
Closed -= (EventHandler)d;
}
}
base.OnClosed(e);
}
public async Task CloseAsync(string message, Exception exception = null, CancellationToken cancellationToken = default)
{
CheckDisposed();
_logger.LogDebug("开始关闭Hub 连接");
_sendedPingMessageTimer.Dispose();
_isStart = false;
if (Closed.GetInvocationList().Length != 0)
{
if (exception != null)
{
await Closed.Invoke(new Exception(message, exception));
}
else
{
await Closed.Invoke(new Exception(message));
}
}
}
private void RemoveAllHandledEvents()
{
if (Shown != null)
{
foreach (var @delegate in Shown.GetInvocationList())
{
var h = (EventHandler)@delegate;
Shown -= h;
}
}
if (Closing != null)
{
foreach (var @delegate in Closing.GetInvocationList())
{
var h = (CancelEventHandler)@delegate;
Closing -= h;
}
}
if (Closed != null)
{
foreach (var @delegate in Closed.GetInvocationList())
{
var h = (EventHandler)@delegate;
Closed -= h;
}
}
var p = Parent as FrameworkElement;
if (p != null)
{
p.DataContextChanged -= Parent_DataContextChanged;
}
}
public bool ClosedIsHooked()
{
return(Closed != null && Closed.GetInvocationList().Length > 0);
}
