windows - How to fill the page and adjust text position according to resize -


i'm new xaml , windows 10 gui programming. want design page textblock, listbox , button, centered in page. want textblock , button reside @ top , bottom of page no matter how users resize window. listbox should stretch fill gap between textblock , listbox automatically. have tried set verticalalignment different value, doesn't seem anything.

<page x:class="firstwin10.mainpage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="using:firstwin10" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:ignorable="d">  <stackpanel background="{themeresource applicationpagebackgroundthemebrush}" orientation="vertical">     <textblock x:name="textblock" horizontalalignment="center" margin="10,20,10,0" textwrapping="wrap" verticalalignment="top">         <run text="unkown screen name"/>         <linebreak/>         <run/>     </textblock>     <listbox x:name="listbox" horizontalalignment="center" minwidth="450" minheight="178" margin="50,20,50,0" verticalalignment="stretch">         <stackpanel orientation="horizontal">             <checkbox />             <textbox text="listbox item #1" />         </stackpanel>         <stackpanel orientation="horizontal">             <checkbox />             <textblock>                 <run text="listbox item #2"/>             </textblock>         </stackpanel>         <stackpanel orientation="horizontal">             <checkbox />             <textblock>                 <run text="listbox item #3"/>             </textblock>         </stackpanel>         <stackpanel orientation="horizontal">             <checkbox />             <textblock>                 <run text="listbox item #4"/>             </textblock>         </stackpanel>     </listbox>     <button x:name="button" content="button" horizontalalignment="center" margin="10,20,10,0" verticalalignment="bottom"/> </stackpanel>

consider using grid 3 rows. first , last rows auto stretched size of textblock , button; middle row takes rest of space.

<grid>     <grid.rowdefinitions>         <rowdefinition height="auto" />         <rowdefinition height="*" />         <rowdefinition height="auto" />     </grid.rowdefinitions>     <textblock grid.row="0" horizontalalignment="center" /> <!-- grid.row="0" can removed it's default -->     <listbox grid.row="1" horizontalalignment="center" />     <button grid.row="2" horizontalalignment="center" /> </grid>

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