xaml - vertical scrollbar not apearing in datagrid inside usercontrol in wpf -


i have user control in wpf has datagrid. add user control in window inside tabitem of tabcontrol. vertical scrollbar not getting visible. resized window , seems user control taking complete height after considering height of datagrid.

how make vertical scrollbar appear , still keep height of datagrid auto depending on height available per height of user control , window ?

edit: main window:

<window>   <grid>     <tabcontrol name="tc"                 selectionchanged="tc_selectionchanged">       <tabitem header="abc">         <local:uc1 />       </tabitem>       <tabitem header="def">         <local:uc2 />       </tabitem>     </tabcontrol>   </grid> </window>

user control:

<usercontrol>   <grid>     <grid.rowdefinitions>       <rowdefinition height="auto"></rowdefinition>       <rowdefinition height="30"></rowdefinition>     </grid.rowdefinitions>     <grid.columndefinitions>       <columndefinition width="2*"></columndefinition>       <columndefinition width="*"></columndefinition>     </grid.columndefinitions>      <stackpanel grid.row="0"                 grid.column="0"                 orientation="vertical">       <stackpanel orientation="horizontal">         <button>add</button>         <button>remove</button>         <button>refresh</button>       </stackpanel>        <label name="lbltopmessage">some message</label>        <datagrid name="dg"                 isreadonly="true">         <datagrid.columns>           <datagridtextcolumn binding="{binding name}"                               header="name"                               width="*"></datagridtextcolumn>           <datagridtextcolumn binding="{binding value}"                               header="value"                               width="130"></datagridtextcolumn>           <datagridtextcolumn binding="{binding list}"                               header="list"                               width="*"></datagridtextcolumn>         </datagrid.columns>       </datagrid>      </stackpanel>     <grid grid.row="0"           grid.column="1"           name="gridts">       <grid.rowdefinitions>         <rowdefinition height="auto"></rowdefinition>         <rowdefinition height="auto"></rowdefinition>         <rowdefinition height="auto"></rowdefinition>         <rowdefinition height="auto"></rowdefinition>         <rowdefinition height="auto"></rowdefinition>         <rowdefinition height="auto"></rowdefinition>       </grid.rowdefinitions>       <grid.columndefinitions>         <columndefinition width="100"></columndefinition>         <columndefinition width="*"></columndefinition>       </grid.columndefinitions>       <textblock name="lblnewsource"                  grid.row="0"                  grid.columnspan="2"                  horizontalalignment="center"                  padding="0 5 0 0"                  fontweight="bold">new source</textblock>       <textblock grid.row="1"                  grid.column="0"                  padding="10 10 0 0">name:</textblock>       <textblock grid.row="2"                  grid.column="0"                  padding="10 10 0 0">value:</textblock>       <textblock grid.row="3"                  grid.column="0"                  padding="10 10 0 0">list:</textblock>        <textbox grid.row="1"                grid.column="1"                name="txtname"                isenabled="false"></textbox>       <combobox grid.row="2"                 grid.column="1"                 name="cbvalue"></combobox>       <listbox grid.row="3"                grid.column="1"                name="lblist">         <listbox.itemtemplate>           <datatemplate>             <checkbox margin="3 5 0 3"                       content="{binding name}"                       ischecked="{binding isactive}" />           </datatemplate>         </listbox.itemtemplate>       </listbox>        <button name="btnsave"               click="btnsave_click"               grid.row="4"               grid.column="1">save</button>       <textblock textwrapping="wrapwithoverflow"                  name="lblmessage"                  grid.row="5"                  grid.column="1"                  margin="0 10 10 0"></textblock>     </grid>   </grid> </usercontrol>

updated: took datagrid out of stackpanel. try code:

<grid>   <grid.rowdefinitions>     <rowdefinition height="45.361"></rowdefinition>     <rowdefinition height="102.639" />     <rowdefinition height="30"></rowdefinition>   </grid.rowdefinitions>   <grid.columndefinitions>     <columndefinition width="2*"></columndefinition>     <columndefinition width="*"></columndefinition>   </grid.columndefinitions>    <stackpanel grid.row="0"               grid.column="0"               orientation="vertical">     <stackpanel orientation="horizontal">       <button>add</button>       <button>remove</button>       <button>refresh</button>     </stackpanel>      <label name="lbltopmessage">some message</label>    </stackpanel>    <datagrid grid.row="1"             name="dg"             isreadonly="true">     <datagrid.columns>       <datagridtextcolumn binding="{binding name}"                           header="name"                           width="*"></datagridtextcolumn>       <datagridtextcolumn binding="{binding value}"                           header="value"                           width="130"></datagridtextcolumn>       <datagridtextcolumn binding="{binding list}"                           header="list"                           width="*"></datagridtextcolumn>     </datagrid.columns>   </datagrid>    <grid grid.row="0"         grid.column="1"         name="gridts"         grid.rowspan="2">     <grid.rowdefinitions>       <rowdefinition height="auto"></rowdefinition>       <rowdefinition height="auto"></rowdefinition>       <rowdefinition height="auto"></rowdefinition>       <rowdefinition height="auto"></rowdefinition>       <rowdefinition height="auto"></rowdefinition>       <rowdefinition height="auto"></rowdefinition>     </grid.rowdefinitions>     <grid.columndefinitions>       <columndefinition width="100"></columndefinition>       <columndefinition width="*"></columndefinition>     </grid.columndefinitions>     <textblock name="lblnewsource"                grid.row="0"                grid.columnspan="2"                horizontalalignment="center"                padding="0 5 0 0"                fontweight="bold">new source</textblock>     <textblock grid.row="1"                grid.column="0"                padding="10 10 0 0">name:</textblock>     <textblock grid.row="2"                grid.column="0"                padding="10 10 0 0">value:</textblock>     <textblock grid.row="3"                grid.column="0"                padding="10 10 0 0">list:</textblock>      <textbox grid.row="1"              grid.column="1"              name="txtname"              isenabled="false"></textbox>     <combobox grid.row="2"               grid.column="1"               name="cbvalue"></combobox>     <listbox grid.row="3"              grid.column="1"              name="lblist">       <listbox.itemtemplate>         <datatemplate>           <checkbox margin="3 5 0 3"                     content="{binding name}"                     ischecked="{binding isactive}" />         </datatemplate>       </listbox.itemtemplate>     </listbox>      <button name="btnsave"             grid.row="4"             grid.column="1">save</button>     <textblock textwrapping="wrapwithoverflow"                name="lblmessage"                grid.row="5"                grid.column="1"                margin="0 10 10 0"></textblock>   </grid> </grid>

i hope helps.


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