Winform form closed event

I have 2 forms, Main and Child. When a button is clicked on the Main form, the Child form is loaded. Can I catch from the Main form, when the Child form is closed by subscribing to the closed event of the child form?

Yes you can, it’s pretty straightforward:

private void LoadChildForm_Click(object sender, EventArgs e)
{
    ChildForm form = new ChildForm();
    form.FormClosed += new FormClosedEventHandler(ChildFormClosed);
    form.Show();
}

void ChildFormClosed(object sender, FormClosedEventArgs e)
{
    // do something useful
}