// Function to handle Calculate Button Click event
private void BtnCalculate_Click(object sender, RoutedEventArgs e)
{
pcVM.Calculate();
if (CO == null)
{
CO = new CalculatorOutput(pcVM);
CO.Closed += CalculatorOutput_Closed;
CO.Show();
}
}
private void CalculatorOutput_Closed(object sender, EventArgs e)
{
CO = null;
}