Stopping further program execution.

Hi,

I have a windows form application that when I click on the run button, it passes to another class to perform some actions.

Within that class there is something that throws an exception caught within a try/catch block. If an exception is thrown and caught, then a messagebox shows up with two option : retry and cancel.
If the user clicks on retry, it simply retries the operation using DialogResult. However, when the user clicks cancel, I simply want the Messagebox to vanish and the program execution to stop.

That is to say, I don't want the application to close down, just that I don't want it to progress any further and the actual form is still visible to the user to allow them to do further operations.

Is there a simple method to do this?

Thanks,

Darren.

Really, all you need is an event.

Code:

---

public class tester
{
        public delegate void EndProgramEvent(object sender, EventArgs e);
        public event EndProgramEvent EndNow;

        public Tester()
        {
               
        }

        public void DoCalculations()
        {
                try
                {
                        internalWork();
                }
                catch (Exception ex)
                {
                        if(MessageBox.Show() == DialogResult.Retry)
                        {
                        }
                        else
                        {
                                if(EndNow!=null)
                                {
                                        EndNow(null,EventArgs.Empty);
                                }
                        }
                }
        }

        private void internalWork()
        {
                //  whatever work needs to be done is here
        }
}

// Form1 here

public partial class Form1
{
        tester testerclass = new tester();

        public Form1(){}

        // call this from your button event or add the lines in here to your button event
        public void StartCalculations()
        {
                testerclass.EndNow+=new EndProgramEvent(EndProgramNow);
                testerclass.DoCalculations();
        }

        public void EndProgramNow(object sender, EventArgs e)
        {
                // you could do anything here really, but this is something you could do
                Application.Exit();
        }
}

---

Thanks.

I'll have a try on that later, when I get back to that work.

Just noticed an error, the delegate goes in the namespace area, not a class.