c# - Windows 8 XAML ListView Header not same size -

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currently having issue header of listview larger listview items, header doesn't line properly. use margin on header hack fix it, surely there's proper way fix this?

why header bigger??

<datatemplate  x:key="headertemplate" >     <grid height="36" background="#99999999" margin="0,0,5,0">         <grid.columndefinitions>             <columndefinition width="3*"/>             <columndefinition width="*"/>             <columndefinition width="3*"/>             <columndefinition width="*"/>         </grid.columndefinitions>         <textblock x:uid="name" textwrapping="wrap" horizontalalignment="left" text="project" grid.column="0" style="{staticresource bodytextblockstyle}" />         <textblock x:uid="qty" textwrapping="wrap" horizontalalignment="left" text="qty" grid.column="1" style="{staticresource bodytextblockstyle}" />         <textblock x:uid="subtotal" textwrapping="wrap" horizontalalignment="left" text="sub total" grid.column="2" style="{staticresource bodytextblockstyle}" />         <textblock x:uid="total" textwrapping="wrap" horizontalalignment="left" text="total" grid.column="3" style="{staticresource bodytextblockstyle}" />     </grid> </datatemplate>  // ...  <listview x:name="cartgridview" itemssource="{binding cartitmes}" headertemplate="{staticresource headertemplate}"     grid.row="1" verticalalignment="stretch" width="auto" itemcontainerstyle="{staticresource simplelistviewitemstyle}">      <listview.itemtemplate>         <datatemplate>             <grid height="auto" margin="0">                 <grid.columndefinitions>                     <columndefinition width="3*"/>                     <columndefinition width="*"/>                     <columndefinition width="3*"/>                     <columndefinition width="*"/>                 </grid.columndefinitions>                 <textblock grid.column="0" style="{staticresource bodytextblockstyle}" horizontalalignment="left"                             text="{binding name, mode=twoway}"/>                 <textblock grid.column="1" style="{staticresource bodytextblockstyle}" horizontalalignment="center"                             text="{binding qty, mode=twoway}"/>                 <textblock grid.column="2" style="{staticresource bodytextblockstyle}" horizontalalignment="left"                             text="{binding subtotal, mode=twoway}"/>                 <textblock grid.column="3" style="{staticresource bodytextblockstyle}" horizontalalignment="center"                             text="{binding total, mode=twoway}"/>                 </grid>             </datatemplate>         </listview.itemtemplate>     </listview>

add following listview definition

<listview.itemcontainerstyle>    <style targettype="listviewitem">     <setter property="horizontalcontentalignment" value="stretch" />   </style> </listview.itemcontainerstyle>

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