wpf - Reuse element defined further up in App.xaml -

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i declare several converters in app.xaml follows repeating myself avoid:

<c:converterchain x:key="isnotnull">   <c:isnullconverter />   <c:invertboolconverter /> </c:converterchain>  <c:converterchain x:key="hidewhennull">   <c:isnullconverter />   <c:invertboolconverter />   <c:booltofromvisibilityconverter falseequivalent="hidden" /> </c:converterchain>  <c:converterchain x:key="collapsewhennull">   <c:isnullconverter />   <c:invertboolconverter />   <c:booltofromvisibilityconverter falseequivalent="collapsed" /> </c:converterchain>

as can see isnotnull reused in 2 following converter chains, possible declare somehow? i'm thinking of like:

<c:converterchain x:key="hidewhennull">   <reference name="isnotnull" />   <c:booltofromvisibilityconverter falseequivalent="hidden" /> </c:converterchain>

is there wpf concept out there cover use case?

<c:converterchain x:key="hidewhennull">   <dynamicresource  resourcekey="isnotnull"/>   <c:booltofromvisibilityconverter falseequivalent="hidden" /> </c:converterchain>

as long converterchain class supports nesting.


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