c# - How do I create a ProgressBar which is hidden when the Value is 0? -

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the following doesn't quite work (progressvalue value set in datacontext.)

<statusbaritem grid.column="1">     <statusbaritem.resources>         <style targettype="progressbar">             <style.triggers>                 <datatrigger binding="{binding progressvalue}" value="0">                     <setter property="visibility" value="hidden"/>                 </datatrigger>             </style.triggers>         </style>     </statusbaritem.resources>     <progressbar value="{binding progressvalue}" grid.column="1" width="80" height="13">     </progressbar> </statusbaritem>

try specifying minimum (and maximum) value. after setting seems work version of code.

with xaml:

    <statusbaritem x:name="feedback" grid.row="1">         <statusbaritem.resources>             <style targettype="progressbar">                 <style.triggers>                     <datatrigger binding="{binding}" value="0">                         <setter property="visibility" value="hidden"/>                     </datatrigger>                 </style.triggers>             </style>         </statusbaritem.resources>         <progressbar value="{binding mode=oneway}" minimum="0" maximum="10" grid.column="1" width="80" height="13">         </progressbar>     </statusbaritem>

and code in constructor of mainwindows.xaml.cs (for testing purposes only)

    int value = 10;     public mainwindow()     {         initializecomponent();         feedback.datacontext = value;          timer t = new timer(500);         t.elapsed += (s, e) =>             {                 if (value > 0) dispatcher.invoke(new action(() => { feedback.datacontext = --value; }));                 else t.stop();             };          t.start();     }

i progress bar go 10 down 0 @ point progress bar disappears.


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