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warren
665
percent conversion with xamnumeric editor
posted

Does anyone have an example with percent conversion with xamnumeric editor? Converting to/from .xx (database) to xx% .

  • 54937
    Offline posted

    When you put a binding on the Value property to bind to your underling object property, you can set the Converter to a class that you create that implements IValueConverter. Here's a simple version that uses 2 numeric editors:

        <StackPanel>
            <StackPanel.Resources>
                <local:PercentConverter x:Key="PctConverter" />
            </StackPanel.Resources>
            <igEditors:XamNumericEditor x:Name="originalPct" />
            <igEditors:XamNumericEditor 
                x:Name="numPercent" 
                Value="{Binding ElementName=originalPct, Path=Value, Converter={StaticResource PctConverter}}" />
        </StackPanel>

    "local" will need to be mapped to whatever clr namespace you put the IValueConverter in.

        public class PercentConverter : IValueConverter
        {
            public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
            {
                if (value == null)
                    return value;
     
                double dbl = ((IConvertible)value).ToDouble(culture);
                dbl *= 100d;
                return dbl;
            }
     
            public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
            {
                if (value == null)
                    return value;
     
                double dbl = ((IConvertible)value).ToDouble(culture);
                dbl = dbl / 100d;
                return dbl;
            }
        }