public void Shutdown(int exitCode = 0)
{
if (_isShuttingDown)
{
throw new InvalidOperationException("Application is already shutting down.");
}
_exitCode = exitCode;
_isShuttingDown = true;
try
{
foreach (var w in Windows)
{
w.Close();
}
var e = new ControlledApplicationLifetimeExitEventArgs(exitCode);
Exit?.Invoke(this, e);
_exitCode = e.ApplicationExitCode;
}
finally
{
_cts?.Cancel();
_cts = null;
_isShuttingDown = false;
}
}
private bool DoShutdown(ShutdownRequestedEventArgs e, bool force = false, int exitCode = 0)
{
if (!force)
{
ShutdownRequested?.Invoke(this, e);
if (e.Cancel)
{
return(false);
}
if (_isShuttingDown)
{
throw new InvalidOperationException("Application is already shutting down.");
}
}
_exitCode = exitCode;
_isShuttingDown = true;
try
{
// When an OS shutdown request is received, try to close all non-owned windows. Windows can cancel
// shutdown by setting e.Cancel = true in the Closing event. Owned windows will be shutdown by their
// owners.
foreach (var w in Windows)
{
if (w.Owner is null)
{
w.Close();
}
}
if (!force && Windows.Count > 0)
{
e.Cancel = true;
return(false);
}
var args = new ControlledApplicationLifetimeExitEventArgs(exitCode);
Exit?.Invoke(this, args);
_exitCode = args.ApplicationExitCode;
}
finally
{
_cts?.Cancel();
_cts = null;
_isShuttingDown = false;
}
return(true);
}
