//find customer
private void btnFind_Click(object sender, RoutedEventArgs e)
{
//if the Find ID textbox is not empty...
if (txtBoxfindID.Text != "")
{
//check if customer exists
if (dataLayerSingleton.findCustomer(Convert.ToInt16(txtBoxfindID.Text)) != null)
{
//create a new customer object with the ID that was input
Customer findCustomer = dataLayerSingleton.findCustomer(Convert.ToInt16(txtBoxfindID.Text));
//display values
lblShowName.Content = findCustomer.Name;
lblShowAddress.Content = findCustomer.Address;
}
else
{
MessageBox.Show("Customer does not exist");
}
}
else
{
MessageBox.Show("Write ID to find");
}
txtBoxfindID.Clear();
}