private void Application_Exit(object sender, ExitEventArgs e)
{
var splashScreen = new Splashscreen("Closing Quickbooks");
this.MainWindow = splashScreen;
new QuickbooksClient().Disconnect();
splashScreen.Close();
}
protected override void OnStartup(StartupEventArgs e)
{
// base.OnStartup(e);
var splashScreen = new Splashscreen("Connecting to Quickbooks");
this.MainWindow = splashScreen;
splashScreen.Show();
Task.Factory.StartNew(() =>
{
string errorMessage = null;
try
{
//simulate some work being done
new QuickbooksClient(Settings.Default.CompanyFile, QuickbooksService.AppName);
}
catch (Exception ex)
{
errorMessage = ex.Message;
}
//since we're not on the UI thread
//once we're done we need to use the Dispatcher
//to create and show the main window
this.Dispatcher.Invoke(() =>
{
if (errorMessage == null)
{
this.MainWindow = new MainWindow();
this.MainWindow.Show();
splashScreen.Close();
}
else
{
MessageBox.Show("This application cannot run while Quickbooks is open. Please close all instances of Quickbooks on this computer and try again: Error Message - " + errorMessage,
"Quickbooks Connection Error",
MessageBoxButton.OK,
MessageBoxImage.Error);
Current.Shutdown();
}
});
});
}