wpf - How to set a default empty binding unless the value is different from 0? -

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when set binding <textblock text="{binding position}"..> ui gives 0 int defaults 0. first, how stop showing result unless position not 0 ? second, if position = 5, ui shows result, if goes 0 again, stop showing result again

in c#, int value type, meaning can never null. can use nullable<int> transform nullable, defaults null.

a shortcut question mark. if define position int? position should result you're after.

edit: didn't see request value disappearing after position = 0 again.

a alternative use ivalueconverter proposed in comments.

otherwise, use trigger, so:

<style targettype="textblock"        text="{binding position}">         <style.triggers>             <trigger property="text" value="0">                 <setter property="visibility" value="collapsed" />             </trigger>         </style.triggers> </style>

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