/// <summary>
/// Open a existing Customer List or create a new one, and give it focus.
/// </summary>
private void ClickNewCustomerList(object sender, EventArgs e)
{
// Get the current instance of the CustomerEntry form or create a new one if not there
formCustomerEntry customerList = formCustomerEntry.Instance;
// Assign it's MDI parent to be the form this event was called in
customerList.MdiParent = this;
// Dispaly the form and give focus
customerList.Show();
customerList.Focus();
}
/// <summary>
/// When the form is closed release the instance.
/// </summary>
private void CustomerFormClosed(object sender, FormClosedEventArgs e)
{
instance = null;
}