I'm trying to figure out the best way to handle a backgroundworker that is triggered off radio button clicks. I created a very simple form with 3 radio buttons and a label. Each of the radio buttons share the same event radioButton_CheckedChanged. If the event completes then I update the label to "Complete". If you click another radio button before the event completes then update label to Cancelled. Below is the code i have written in this quick example. Although the application tends to run as expected my concern is the use of Application.DoEvents. What are my alternatives to this. For obvious reasons i can't sleep while IsBusy. Am I going about this all wrong or is there a better way to do this? Thanks, poco
private void radioButton_CheckedChanged(object sender, EventArgs e)
{
RadioButton rb = sender as RadioButton;
if (rb.Checked)
{
if (backgroundWorker1.IsBusy)
{
backgroundWorker1.CancelAsync();
while (backgroundWorker1.IsBusy)
Application.DoEvents();
}
backgroundWorker1.RunWorkerAsync();
}
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
BackgroundWorker worker = sender as BackgroundWorker;
for (int i = 0; i < 100 && !worker.CancellationPending; ++i)
Thread.Sleep(1);
if (worker.CancellationPending)
{
e.Cancel = true;
return;
}
}
private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
if (e.Cancelled)
label1.Text = "Canceled";
else
label1.Text = "Complete";
}