public static DialogResult Show <TObject>(
IWin32Window owner,
string caption,
Func <object, object> asyncMethod,
object asyncParameterIn,
out bool asyncWasCanceled, out Exception asyncExceptionOrNull, out TObject asyncDoneParameter)
{
DialogResult result;
if ((object)asyncMethod == null)
{
throw new ArgumentNullException("asyncMethod");
}
using (BackgroundTaskForm backgroundTaskForm = new BackgroundTaskForm())
{
backgroundTaskForm.btnCancel.Enabled = false;
backgroundTaskForm.lblCaption.Text = caption;
backgroundTaskForm.AsyncMethod = asyncMethod;
backgroundTaskForm.AsyncParameterIn = asyncParameterIn;
result = backgroundTaskForm.ShowDialog(owner);
asyncWasCanceled = backgroundTaskForm.AsyncCanceledOut;
asyncExceptionOrNull = backgroundTaskForm.AsyncErrorOut;
asyncDoneParameter = (TObject)backgroundTaskForm.AsyncResultOut;
}
return(result);
}
TObject IFullView.ShowAsync <TObject>(string text, Func <object, TObject> asyncCallback, object asyncParameter)
{
DialogResult dialogResult;
TObject asyncResult;
bool asyncWasCanceled;
Exception asyncExceptionOrNull;
if ((object)asyncCallback == null)
{
throw new ArgumentNullException("asyncCallback");
}
this._.StatusText = "Asynchronous operation started...";
dialogResult = BackgroundTaskForm.Show <TObject>(this, text, o =>
{
//Thread.Sleep(1000);
return(asyncCallback(asyncParameter));
}, null, out asyncWasCanceled, out asyncExceptionOrNull, out asyncResult);
if (asyncWasCanceled || dialogResult == DialogResult.Cancel)
{
this.Close(); // direct
}
if ((object)asyncExceptionOrNull != null)
{
if (ExecutableApplicationFascade.Current.HookUnhandledExceptionEvents)
{
ExecutableApplicationFascade.Current.ShowNestedExceptionsAndThrowBrickAtProcess(asyncExceptionOrNull);
}
// should never reach this point
}
this._.StatusText = "Asynchronous operation completed successfully.";
return(asyncResult);
}
