Hi, I am currently defining few grids as following:

<Grid.RowDefinitions>
   <RowDefinition Height="{TemplateBinding Height-Height/5}"/>
   <RowDefinition Height="{TemplateBinding Height/15}"/>
   <RowDefinition Height="{TemplateBinding Height/20}"/>
  <RowDefinition Height="{TemplateBinding Height/6}"/>
 </Grid.RowDefinitions>

While the division works fine , the subtraction isn't yielding the output.

Ialso tried like following:

<RowDefinition Height="{TemplateBinding Height-(Height/5)}"/>

Still no result. Any suggestions plz.

Thanks, Subhen

**

Update

** Now In My XAML I tried implementing the IvalueConverter like :

<RowDefinition Height="{TemplateBinding Height, Converter={StaticResource heightConverter}}"/>

Added the reference as

<local:medieElementHeight x:Key="heightConverter"/>

In side generic.cs I have coded as following:

public class medieElementHeight : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            //customVideoControl objVdeoCntrl=new customVideoControl();
            double custoMediaElementHeight = (double)value;//objVdeoCntrl.customMediaPlayer.Height;

            double mediaElementHeight = custoMediaElementHeight - (custoMediaElementHeight / 5);
            return mediaElementHeight;
        }


        #region IValueConverter Members


         object IValueConverter.ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }

        #endregion
    }

But getting the exception Unknown Element Height in the element RowDefination.