c# gui multi forms child parent

Handle FormClosed[^] event.

In your code, you can do something like this:

LoginForm loginForm = new LoginForm();
loginForm.FormClosed += new FormClosedEventHandler(this.LoginForm_FormClosed);

...

void LoginForm_FormClosed(object sender, FormClosedEventArgs e)
{
  MessageBox.Show("LoginForm has closed, with reason: " + e.CloseReason);
}

Let's approach logically. If there are only two forms, and you want to close both, it means you want to exit the application. Now, one of the forms is a main one; it it defined when Application.Run is called. The form used as an argument becomes main. If you close a main form application exist anyway. You only need to take care about your second form.

Overrides its virtual OnFormClosed method:

//only for non-main form:
protected override void OnFormClosed(FormClosedEventArgs e) {
   Application.Exit();
}

—SA

Since Form1 (parent) opens Form2 (child) all you have to to is catch the Form2 Close event in Form1's code. In the event handler you then call Form1.Close().

Cheers!

Hi,

In the GUI applications when u try to close the child form it will close and parent still opened. but where as in your code if u use application.Exit method it will close both the forms. So check your code

For Better Response please post your sample code.

Thanks & Regards
Sudhakar