If u provide ur code then it will be more clear.
Here is some sample code
<grid>
<grid.rowdefinitions>
<rowdefinition height="Auto" />
<rowdefinition height="Auto" />
<rowdefinition height="Auto" />
</grid.rowdefinitions>
<grid.columndefinitions>
<columndefinition width="Auto" />
<columndefinition width="Auto" />
</grid.columndefinitions>
<label grid.row="0" />
<Label Grid.Row="1"/>
<Label Grid.Row="2"/>
</grid
>
Hope it will help u.