WPF-xaml Calculating Total of text box values

Question

I have a wpf xaml form which has 5 text boxes shows order price. Below the 5 text boxes i have another textbox:[subTotal] which displays the subtotal of order price\'s.\"Su

Answer 1

Using this converter:

public class SumConverter : IMultiValueConverter
{
    public object Convert(object[] values, Type targetType,
        object parameter, System.Globalization.CultureInfo culture)
    {
        double _Sum = 0;
        if (values == null)
            return _Sum;
        foreach (var item in values)
        {
            double _Value;
            if (double.TryParse(item.ToString(), out _Value))
                _Sum += _Value;
        }
        return _Sum;
    }

    public object[] ConvertBack(object value, Type[] targetTypes,
        object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

Do this:

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