private void SimpleCalculatorBtn_Click(object sender, RoutedEventArgs e)
{
if (CalculatorWindow == null)
{
CalculatorWindow = new CalculatorWindow();
}
CalculatorWindow.Show();
}
private void Button_Click_2(object sender, RoutedEventArgs e)
{
if (CalculatorWindow == null)
{
CalculatorWindow = new CalculatorWindow();
}
CalculatorWindow.Show();
}
private void CalculatorMenuItem_Click(object sender, RoutedEventArgs e)
{
CalculatorWindow calculatorWindow = new CalculatorWindow();
calculatorWindow.Show();
}