private void bindingNavigatorAddNewItem_Click(object sender, EventArgs e)
        {
            FormInsertCustomer fm = new FormInsertCustomer(this);

            fm.ShowDialog();
        }
        private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            FormInsertCustomer fic = new FormInsertCustomer(this);

            fic.ShowDialog();
        }