Binding to element in WPF: can the Path expression do math?

Question

Hi

I'm trying to bind a control to the parent's Height/width property using ElementName and a Path. However, I don't want to bind to the actual height, but to exactly half the height. Can the Path expression do the math?

e.g. Path={ActualHeight/2}

I couldn't find a way to do that. IS there any other clever approach?

Thanks!

Answer 1

No it can't you should use binding converters

public class MyConverter : IValueConverter
{
public object Convert(object value, Type  targetType,
      object parameter, CultureInfo culture)
  {
      return (int)value/2;
  }

  public object ConvertBack(object value, Type targetType,
      object parameter, CultureInfo culture)
  {
    return null;
  }
}