StringFormat in GroupBox header binding doesn't seem to work

Question

I'm trying to bind the header text of aGroupBox to a property and display it using StringFormat.

The first part works and it returns the text as expected. But I want the final text to be formatted. For example when I return cm I want it to be displayed as Foundation Height (cm), but the code below only shows cm.

<GroupBox Header="{Binding CurrentTargetUnit, 
    Converter={StaticResource QuantityToTextConverter},
    ConverterParameter={x:Static enumerations:Quantity.Length},
    StringFormat='Foundation Height ({0})'}">
</GroupBox>

Answer 1

Try without quotes

....
StringFormat=Foundation Height ({0})}">

UPDATE

As you have used binding for header you should use HeaderStringFormatinstead.

....
HeaderStringFormat=Foundation Height ({0})}">

Read the documentation for more