c# - How to Write a Data Trigger based on Hascode of a Control in WPF -


i'm having property hashcodevalue. based on hashcode in hashcodevalue property need change visibility of control using datatrigger.

the wpf xaml source code:

<style targettype="{x:type datagridcolumnheader}" x:key="dummyfilterdatagridcolumnheader">    <setter property="template">       <setter.value>           <controltemplate targettype="{x:type datagridcolumnheader}">               <button content="super i" visibility="collapsed" />               <button content="super ii" visibility="collapsed" />               <button content="super iii" visibility="collapsed" />               <controltemplate.triggers>                     <datatrigger property="{binding hashcodevalue}" value="???">                         <setter targetname="button" property="visibility" value="visible" />                     </datatrigger>               </controltemplate.triggers>           </controltemplate>       </setter.value>    </setter> </style>

we can't know hashcode in compile time, generates on run time. out of 3 buttons, property holds 1 of buttons hash code in run time. based on value, want change visibility of corresponding button visible.

kindly assist me how write datatrigger scenario.

since hashcode value known @ runtime, think, should use ivalueconverter reach goal. basic idea have hash converter value, additional string converter parameter, getting bool converter output.

so, code might this:

 <controltemplate.triggers>                     <datatrigger property="{binding hashcodevalue,converter={staticresource myconverter,converterparameter=myparameter}}" value="true">                         <setter targetname="button" property="visibility" value="visible" />                     </datatrigger>               </controltemplate.triggers>

this trick give need, if understood correctly.


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