Run some codes when another form would closed

Question

I have a winform with ID Form1, in this form I create new object of another form with ID Form2 and show it:

codes in Form1:

Form2 f2 = new Form2();
f2.show();

I want run some codes in Form1 when user f2 would closed:

Please help me.

Answer 1

private void button1_Click(object sender, EventArgs e)
{
    Form2 frm = new Form2();
    frm.FormClosed+= Form2Closed;
    frm.Show();

}

private void Form2Closed(object sender, EventArgs e)
{
    //frm has been closed
}