Question

I have a form. In that I got to show a dialog (on some circumstances) with Text and a Cancel button. I want to catch the event of that button in my form Or know if that cancel button was clicked.

How can this be done ? I believe this should be possible but can’t make out how ?

From my mainForm I have BackgroundWorker. When the backgroundWorker is started I open a childForm (with a Label and a button) and when the background task is over, I close the childForm. What I want more is : when the button of childForm is clicked the ongoing task of backgroundWorker should be cancelled.
SOLUTION

In my childForm I have set CancelButton property as cancelBtn for the form. The othe code is :

    private bool cancel;
    public bool Cancel
    {
        get { return cancel; }
        set { cancel = value; }
    }
    // Set the flag as true to indicate that Cancel button was actually pressed
    private void cancelBtn_Click(object sender, EventArgs e)
    {
        Cancel = true;
    }

In mainForm :

    childDlg = new ChildDialog();

    // wHILE cALLING
            backgroundWorker1.RunWorkerAsync();
            msg = "Connecting...";
            childDlg .set(msg, "");
            if (!childDlg .IsAccessible)
            {
                // This is caught even when the dialog is closed   
                if (childDlg .ShowDialog() == DialogResult.Cancel) {
                     if (childDlg.Cancel == true) { // Was really cancelBtn pressed  
                         // NOW ONLY do my stuff 
                     }   
                }
            }  

I had tried using @DeveloperX technique i.e. EventHandler in parent class, but the parent class method was nver being called. Tried a lot but couldn’t success. Then tried of @RobinJ’s technique and it worked. I just had to add flag to identify was really cancel button pressed or jjst windw was closed normally.

Thanks to all of you for tryig to help me out. I really appreciate your help.

Thanks

Answer 1

Put this in the form that should catch the event:

frmDialog.ShowDialog();

And this in the btnCancel_Click event of the dialog:

return DialogResult.Cancel();

Sorry if I’m confusing VB and C# here, but it’s pretty much the same.