c# - How set same height in group of listbox? -


i have problem generating listbox.
have dataset many rows , need split 1 big table 2 or more depends on rowslimit. 1 table 100 rows became 2 tables 50 rows , on. these blocks display next each other.
use listbox grouping (in code behind set property filtering) , works well. each row has different height , need last row in group fills remaining space in every group. tried use dock panel, changes nothing.

also need create , set groupstyle.headertemplate in runtime, because have in dataset number of columns, width, bordercolor, , other properties. how can replace datatemplate "headergroupstyle" new?

<listbox name="lbtable" >     <listbox.resources>         <datatemplate x:key="headergroupstyle">             <stackpanel orientation="horizontal">                 <textbox width="100" text="header 1" />                 <textbox width="100" text="header 2" />                 <textbox width="100" text="header 3" />                 <textbox width="100" text="header 4" />             </stackpanel>         </datatemplate>         <style targettype="{x:type groupitem}">             <setter property="template">                 <setter.value>                     <controltemplate targettype="{x:type groupitem}">                         <dockpanel>                             <contentpresenter dockpanel.dock="top"/>                             <itemspresenter margin="0,0,0,0" dockpanel.dock="top"/>                         </dockpanel>                     </controltemplate>                 </setter.value>             </setter>         </style>     </listbox.resources>     <listbox.itemcontainerstyle>         <style targettype="listboxitem">             <setter property="padding" value="0"/>         </style>     </listbox.itemcontainerstyle>     <listbox.itemtemplate>         <datatemplate>             <stackpanel orientation="horizontal" dockpanel.dock="top">                 <textbox width="100" text="{binding path=cell[0].value}" />                 <textbox width="100" text="{binding path=cell[1].value}" />                 <textbox width="100" text="{binding path=cell[2].value}" />                 <textbox width="100" text="{binding path=cell[3].value}" />             </stackpanel>         </datatemplate>     </listbox.itemtemplate>     <listbox.groupstyle>         <groupstyle headertemplate="{staticresource headergroupstyle}">             <groupstyle.panel>                 <itemspaneltemplate>                     <stackpanel orientation="horizontal" />                 </itemspaneltemplate>             </groupstyle.panel>         </groupstyle>      </listbox.groupstyle> </listbox>

this have enter image description here , want enter image description here


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