First let me say I have read this useful article thoroughly and am using the SafeThread class from CodeProject. I get the same result whether using Thread or SafeThread.
I have reduced my problem down to an app consisting of two forms each with one button. The main program displays a form. When you click that button, a new thread starts which displays a second form. When you click the button on the second form, internally it just does "throw new Exception()"
When I run this under VS2008, I see "Exception in DoRun()".
When I run outside of VS2008, I get a dialog box "Unhandled exception has occurred in your application. If you click continue, the application ...."
I have tried setting legacyUnhandledExceptionPolicy in the app.config to both 1 and 0.
What do I need to do to capture the exception thrown in my second form, when not running under VS2008?
Here's my Program.cs
static class Program
{
[STAThread]
static void Main()
{
Application.ThreadException += new ThreadExceptionEventHandler (Application_ThreadException);
Application.SetUnhandledExceptionMode (UnhandledExceptionMode.CatchException);
AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
try
{
Application.Run(new Form1());
}
catch(Exception ex)
{
MessageBox.Show("Main exception");
}
}
static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
{
MessageBox.Show("CurrentDomain_UnhandledException");
}
static void Application_ThreadException(object sender, ThreadExceptionEventArgs e)
{
MessageBox.Show("Application_ThreadException");
}
}
Here's Form1:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
SafeThread t = new SafeThread(new SimpleDelegate(ThreadMain));
try
{
t.ShouldReportThreadAbort = true;
t.ThreadException += new ThreadThrewExceptionHandler(t_ThreadException);
t.ThreadCompleted += new ThreadCompletedHandler(t_ThreadCompleted);
t.Start();
}
catch(Exception ex)
{
MessageBox.Show(string.Format("Caught externally! {0}", ex.Message));
}
}
void t_ThreadCompleted(SafeThread thrd, bool hadException, Exception ex)
{
MessageBox.Show("t_ThreadCompleted");
}
void t_ThreadException(SafeThread thrd, Exception ex)
{
MessageBox.Show(string.Format("Caught in safe thread! {0}", ex.Message));
}
void ThreadMain()
{
try
{
DoRun();
}
catch (Exception ex)
{
MessageBox.Show(string.Format("Caught! {0}", ex.Message));
}
}
private void DoRun()
{
try
{
Form2 f = new Form2();
f.Show();
while (!f.IsClosed)
{
Thread.Sleep(1);
Application.DoEvents();
}
}
catch(Exception ex)
{
MessageBox.Show("Exception in DoRun()");
}
}
}
And here is Form2:
public partial class Form2 : Form
{
public bool IsClosed { get; private set; }
public Form2()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
throw new Exception("INTERNAL EXCEPTION");
}
protected override void OnClosed(EventArgs e)
{
IsClosed = true;
}
}
