WPF: ItemsControl with scrollbar (ScrollViewer)

Question

I followed this small "tutorial" on how to add a scrollbar to an ItemsControl, and it works in Designer view, but not when I compile and execute the program (only the first few items show up, and no scrollbar to view more - even when VerticalScrollbarVisibility is set to "Visible" instead of "Auto").

Any idea on how to solve this?

This is the code I use to show my items (normally I work with Databinding, but to see the items in my Designer I added them manually):

<ItemsControl x:Name="itemCtrl" Style="{DynamicResource UsersControlStyle}">
    <ItemsControl.ItemsPanel>
        <ItemsPanelTemplate>
            <StackPanel Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Top">
            </StackPanel>
        </ItemsPanelTemplate>
    </ItemsControl.ItemsPanel>

    <uc:UcSpeler />
    <uc:UcSpeler />
    <uc:UcSpeler />
    <uc:UcSpeler />
    <uc:UcSpeler />
</ItemsControl>

And this is my Template:

<Style x:Key="UsersControlStyle" TargetType="{x:Type ItemsControl}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type ItemsControl}">
                <Border SnapsToDevicePixels="true" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}">
                    <ScrollViewer VerticalScrollBarVisibility="Visible">
                        <ItemsPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                    </ScrollViewer>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Drew Noakes · Accepted Answer · 2012-10-29 22:01:03Z

306

To get a scrollbar for an ItemsControl, you can host it in a ScrollViewer like this:

<ScrollViewer VerticalScrollBarVisibility="Auto">
  <ItemsControl>
    <uc:UcSpeler />
    <uc:UcSpeler />
    <uc:UcSpeler />
    <uc:UcSpeler />
    <uc:UcSpeler />
  </ItemsControl>
</ScrollViewer>

edited Oct 29, 2012 at 22:01

Drew Noakes

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answered Jan 8, 2010 at 15:34

Oskar

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8 Comments

Christoffer Lette Over a year ago

It's so obvious when you see it... As I'm coming from Windows Forms, I often find myself stuck in the wrong mindset. It seems that WPF rights a lot of wrongs... +1.

itsmatt Over a year ago

Thanks -very helpful. I agree with Lette that my WinForms brain doesn't "get" this initially.

Ristogod Over a year ago

I just tried this right here and it still did not work. The ItemsControl flows right off its parent container and no ScrollBar is visible at all.

Oskar Over a year ago

@Ristogod If you host the ScrollViewer inside something that lets its content grow as much as needed, for example a StackPanel, scrolling will not work. What's the parent container? Try setting a fixed height on either the ScrollViewer or the parent, does that help?

Oskar Over a year ago

@Rod You can host the ScrollViewer in a DockPanel or a Grid instead of a StackPanel to achieve this.

|

Andrii Shvydkyi · Accepted Answer · 2010-01-08 15:31:41Z

101

You have to modify the control template instead of ItemsPanelTemplate:

<ItemsControl >
    <ItemsControl.Template>
        <ControlTemplate>
            <ScrollViewer x:Name="ScrollViewer" Padding="{TemplateBinding Padding}">
                <ItemsPresenter />
            </ScrollViewer>
        </ControlTemplate>
    </ItemsControl.Template>
</ItemsControl>

Maybe, your code does not working because StackPanel has own scrolling functionality. Try to use StackPanel.CanVerticallyScroll property.

answered Jan 8, 2010 at 15:31

Andrii Shvydkyi

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4 Comments

Xuntar Over a year ago

The StackPanel CanVerticallyScroll property didn't work, I'm afraid.

Souvik Basu Over a year ago

StackPanel CanVerticallyScroll didnt work but the code example given here worked for me. Thanks

HelloSam Over a year ago

This works. I am looking for making scrollviewer inside instead of outside, because github.com/punker76/gong-wpf-dragdrop requires it.

Sandwich Over a year ago

I had to add a maxheight to my itemscontrol for this to work

Lou · Accepted Answer · 2019-03-20 17:57:55Z

3

Put your ScrollViewer in a DockPanel and set the DockPanel MaxHeight property

[...]
<DockPanel MaxHeight="700">
  <ScrollViewer VerticalScrollBarVisibility="Auto">
   <ItemsControl ItemSource ="{Binding ...}">
     [...]
   </ItemsControl>
  </ScrollViewer>
</DockPanel>
[...]

answered Mar 20, 2019 at 17:57

Lou

4671 gold badge7 silver badges16 bronze badges

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