Question

I am trying to wrap my head around threading in C# but I am having difficulty implementing this behavior.

I need a simple yes/no dialog that returns DialogResult.No when 30 seconds are passed.

What I’ve got so far is this:

Thread th = new Thread(() =>
{
    try
    {
        result = message.ShowDialog();
    }
    catch (Exception)
    {

    }
});
th.Start();
Thread.Sleep(30000);
th.Abort();

When I select Yes or No on the dialog it still waits out the 30 seconds, I need the thread to stop when response is received.

This is probably a no brainer but I’m relatively new to C# and could really use some help on this.

Answer 1

You could use a Timer when you initialize your Form.
When the timer expired, you close your Form.

Timer time1 = new Timer();
time1.Elapsed += new ElapsedEventHandler(OnTimedEvent);
time1.Interval = 30000; // 30 secs
...
time1.Enabled = true; // Start the timer
message.ShowDialog();

private void OnTimedEvent(object source, ElapsedEventArgs e)
{
    // Close your Form
    message.Close();
    // Maybe you could set a variable, that indicates you, that the timer timed out

}