I have two forms. The first form is the mainForm, this never goes anywhere. On opening the second form (saveForm), it will display over the top. When i close this form, I want a certain piece of code in the mainForm to run. I assume this is the correct way to get this to happen?

The code on saveForm when I close and return to the mainForm:

private void btnSaveDetails_Click(object sender, EventArgs e)
    {
        Delivery d = new Delivery(txtNameBox.Text, txtAddressBox.Text, txtDayBox.Text, txtTimeBox.Text, txtMealBox.Text, txtInstructionsBox.Text, txtStatusBox.Text);
        mainForm.myDeliveries.Add(d);
        this.Close();
    }

Any ideas?