c# - Combination of ScrollViewer and Grid not working as expected -

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i defined following dialogwindow:

<ui:dialogwindow x:class="codeelementratingwindow"         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         xmlns:ui="clr-namespace:microsoft.visualstudio.platformui;assembly=microsoft.visualstudio.shell.12.0"         title="codeelementratingwindow" height="600" width="800">     <grid name="root">         <grid.rowdefinitions>             <rowdefinition height="60px"></rowdefinition>             <rowdefinition height="510px"></rowdefinition>             <rowdefinition height="30px"></rowdefinition>         </grid.rowdefinitions>         <label grid.columnspan="2" grid.row="0" grid.column="0" name="titlelabel" content="please rate difficulty perceived while working each of following code elements (1 = ''very easy'' / 6 = ''very difficult'')"></label>         <scrollviewer minheight="510px">             <grid grid.columnspan="2" grid.row="1" grid.column="1" name="elementcontainer">                 <grid.columndefinitions>                     <columndefinition width="*"></columndefinition>                     <columndefinition width="150"></columndefinition>                 </grid.columndefinitions>             </grid>         </scrollviewer>         <grid grid.row="2" grid.column="0" grid.columnspan="2">             <grid.columndefinitions>                 <columndefinition width="*"></columndefinition>                 <columndefinition width="*"></columndefinition>             </grid.columndefinitions>             <button content="ok" grid.column="0" click="ok_button_click"></button>             <button content="cancel" grid.column="1" click="cancel_button_click"></button>         </grid>     </grid> </ui:dialogwindow>

the layout consists of 3 rows. first row has title label, bottom row 2 buttons , in middle, want have list of ui elements add dynamically in code grid there. since don't know in advance how many items are, want display them in scrollviewer.

i can see scrollviewer drawn, problem is, scrollviewer overlaps title label , clumsy. when remove scrollviewer, not case. doing wrong?

just change grid.row=1 scrollviewer. work. refer below code.

<grid name="root">         <grid.rowdefinitions>             <rowdefinition height="60px"></rowdefinition>             <rowdefinition height="510px"></rowdefinition>             <rowdefinition height="30px"></rowdefinition>         </grid.rowdefinitions>         <label grid.columnspan="2" grid.row="0" grid.column="0" name="titlelabel" content="please rate difficulty perceived while working each of following code elements (1 = ''very easy'' / 6 = ''very difficult'')"></label>         <scrollviewer minheight="510px" grid.columnspan="2" grid.row="1" grid.column="1">             <grid  name="elementcontainer">                 <grid.columndefinitions>                     <columndefinition width="*"></columndefinition>                     <columndefinition width="150"></columndefinition>                 </grid.columndefinitions>             </grid>         </scrollviewer>         <grid grid.row="2" grid.column="0" grid.columnspan="2">             <grid.columndefinitions>                 <columndefinition width="*"></columndefinition>                 <columndefinition width="*"></columndefinition>             </grid.columndefinitions>             <button content="ok" grid.column="0" click="ok_button_click"></button>             <button content="cancel" grid.column="1" click="cancel_button_click"></button>         </grid>     </grid>

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