A ScrollViewer is a container that can display content that is larger than the ScrollViewer itself. However by default the Scroll Viewer displays a Vertical Scrollbar even if the the content falls within the dimension of the ScrollViewer
<Canvas x:Name="can"> <ScrollViewer Width="200" Height="200" Canvas.Left="30" Canvas.Top="30"> <TextBlock Text="Lorem Ipsum Lorem"> </TextBlock> </ScrollViewer></Canvas>
In order to prevent a vertical scrollbar to be displayed, just set the VerticalScrollBarVisibility property to Auto
<Canvas x:Name="can"> <ScrollViewer Width="200" Height="200" Canvas.Left="30" Canvas.Top="30" VerticalScrollBarVisibility="Auto"> <TextBlock Text="Lorem Ipsum Lorem"> </TextBlock> </ScrollViewer></Canvas>
The Vertical ScrollBar does not appear now.
From DevCurry