c# - WPF DataGrid | Hiding Row Validation Column -

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i have wpf datagrid has 4 columns, of datagrid template columns. when grid renders there column added automatically on left, understand used displaying row validation errors , it's bound template rowvalidationerrortemplate.

my question is, dont want column displayed, , want hidden. how can set on datagrid?

please note i'm using .net 3.5.

my grid style below:

 <style x:key="gridstyle" targettype="{x:type controls:datagrid}">                 <setter property="verticalgridlinesbrush" value="#7ba0cd"/>                 <setter property="horizontalgridlinesbrush" value="#7ba0cd"/>                 <setter property="alternatingrowbackground" value="#d3dfee"/>                 <setter property="canuserresizerows" value="false"/>                 <setter property="canuserreordercolumns" value="false"/>                 <setter property="canuserresizecolumns" value="false"/>                 <setter property="canusersortcolumns" value="false"/>                 <setter property="autogeneratecolumns" value="false"/>             </style>

found how this:

<setter property="rowheaderstyle">             <setter.value>                 <style targettype="primitives:datagridrowheader">                     <setter property="background" value="transparent" />                 </style>             </setter.value>         </setter>

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