Remove the button border including the 'tab event' in wpf? -

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i manage remove button border using style

    <style x:key="transparentstyle" targettype="{x:type button}">         <setter property="template">             <setter.value>                 <controltemplate targettype="button">                     <border background="transparent">                         <contentpresenter/>                     </border>                 </controltemplate>             </setter.value>         </setter>     </style>

however, how remove dotted black border appears tab key?enter image description here

that focusvisualstyle showing dotted line, try set x:null


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