private void button1_Click(object sender, EventArgs e)
{
b_add bh = new b_add();
bh.Show();
this.Close();
}
private void button2_Click(object sender, EventArgs e)
{
b_add ba = new b_add();
ba.ShowDialog();
Functions.LoadComboBoxes("SELECT * FROM Customer", comboCustomerName, "CustomerName");
comboCustomerName.SelectedIndex = comboCustomerName.FindString(ba.customerObj);
}