How can i handle an exception on wpf, that was throwed within worker thread?
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void MainWindow_OnLoaded(object sender, RoutedEventArgs e)
{
var task = Task.Factory.StartNew(() =>
{
Debug.WriteLine("Hello");
throw new Exception();
});
try
{
task.Wait();
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
}
}
Or it is not common to handle an exception in this way?
task.ContinueWith(task => {
if (task .Exception != null)
{
//.........
}
},TaskContinuationOptions.OnlyOnFaulted);
Take a look here http://www.codeproject.com/Articles/152765/Task-Parallel-Library-of-n#handlingExceptions
You can catch the [System.AggregateException]
to examine if you can handle any of its InnerExceptions . See the example below.
var task = Task.Factory.StartNew(() =>
{
Debug.WriteLine("Hello");
throw new InvalidOperationException(); // throw an InvalidOperationException that is handled.
});
try
{
task.Wait();
}
catch (AggregateException ae)
{
ae.Handle((x) =>
{
if (x is InvalidOperationException) // We know how to handle this exception.
{
Console.WriteLine("InvalidOperationException error.");
return true; // Continue with operation.
}
return false; // Let anything else stop the application.
});
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.