c# - How to merge band and column? -

i newbie in devexpress , wpf, need make grid bands. illustrate 2 pict: 1st - i've done, 2nd - have do, don't know how. pay attention first column

here code of first pict grid:

<window xmlns:dxe="http://schemas.devexpress.com/winfx/2008/xaml/editors"  x:class="dbexpresstest.mainview"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"     xmlns:local="clr-namespace:dbexpresstest"     xmlns:dxg="http://schemas.devexpress.com/winfx/2008/xaml/grid"     mc:ignorable="d"     title="mainview" height="350" width="800"> <window.datacontext>     <local:mainviewmodel/> </window.datacontext> <grid>     <dxg:gridcontrol itemssource="{binding path=cars}" autogeneratecolumns="addnew" enablesmartcolumnsgeneration="true">         <dxg:gridcontrol.bands>             <dxg:gridcontrolband>                 <dxg:gridcolumn header="new column"></dxg:gridcolumn>             </dxg:gridcontrolband>              <dxg:gridcontrolband header="cars" horizontalheadercontentalignment="center">                 <dxg:gridcolumn fieldname="name" header="name"/>                 <dxg:gridcolumn fieldname="year" header="year"/>                 <dxg:gridcolumn fieldname="type" header="type"/>             </dxg:gridcontrolband>             <dxg:gridcontrolband>                 <dxg:gridcolumn fieldname="owner" header="owner"></dxg:gridcolumn>             </dxg:gridcontrolband>         </dxg:gridcontrol.bands>         <dxg:gridcontrol.view>             <dxg:tableview allowperpixelscrolling="true" showtotalsummary="true"/>         </dxg:gridcontrol.view>     </dxg:gridcontrol>  </grid> 

i found solution..... add "showcolumnheaders" table view "false" value!

... <dxg:gridcontrol.view>     <dxg:tableview allowperpixelscrolling="true" showtotalsummary="true" showcolumnheaders="false"/> </dxg:gridcontrol.view> ....