ScrollViewer ContentScroll is missing - xaml

my ScrollViewer doesn't work.
scrolling isn't possible.
<ScrollViewer>
<StackPanel>
<ListView> </ListView>
<Grid> </Grid>
<ListView> </ListView>
</StackPanel>
</ScrollViewer>
i have tried different possibilities with setting of height (for ScrollViewer and StackPanel).
how to scroll the content ?
EDIT: VerticalScrollBarVisibility="Visible" and CanContentScroll="True" already used
jeff

It's probably because you have your scrollviewer inside something like a stackpanel. Try a grid instead.

Related

Apply Parallax effect into GridView

https://learn.microsoft.com/en-us/windows/uwp/design/motion/parallax
this is microsoft instruction to use the paralax they use the ListView to demo the effect
but my data is stored inside the Grid.View so can anyone show me how to implement into it ?
Microsoft said that we can use this with any element that contain the scrollviewer
ParallaxView works with GridView. The Source property of ParallaxView is for setting the element that either is or contains the ScrollViewer that controls the parallax operation. Here in your code snippet it bind the ForegroundElement to Source property but no such an element in. You need to name the GridView as ForegroundElement .
<GridView
x:Name="ForegroundElement"
IsItemClickEnabled="True"
ItemClick="Grid_Clicked"
ItemsSource="{x:Bind Icons}">
...
</GridView>
Besides this, the code snippet should work well. If you still cannot see the effects it may be caused by items count is not enough. ScrollViewer inside the GridView or ListView only be shown when the host control's layout space is being constrained smaller than the expanded content size, details please see ScrollViewer in a control template. You could try to add more items to check the effects.
Additionally, edit the question to add more details and avoid to put it as an answer.
<GridView Grid.Row="1" ItemsSource="{x:Bind Icons}" IsItemClickEnabled="True" ItemClick="Grid_Clicked">
<GridView.ItemTemplate>
<DataTemplate x:DataType="data:Icon">
<StackPanel>
<Image Width="200" Height="200" HorizontalAlignment="Center" Source="{x:Bind ImageCover}"/>
<TextBlock FontSize="16" VerticalAlignment="Center" Text="{x:Bind Title}"/>
<TextBlock FontSize="10" VerticalAlignment="Center" Text="{x:Bind Room}"/>
</StackPanel>
</DataTemplate>
</GridView.ItemTemplate>
</GridView>
this is where the data stored
and this is the parallax
<ParallaxView Source="{x:Bind ForegroundElement}" VerticalShift="50">
<!-- Background element -->
<Image x:Name="BackgroundImage" Source="Assets/turntable.png"
Stretch="UniformToFill"/>
</ParallaxView>

Scrollview inside pivot item doesn't full scroll

Hello I have this Page XAML. The problem its that the text inside each PivotItem doesn't scroll correctly, just scroll a bit but no to the end. Pivot works correctly, you can flip Items Horizontally. How can i achieve the correct behavior on the scrolls?
<StackPanel>
<Pivot>
<PivotItem>
<ScrollViewer VerticalScrollMode="Enabled">
<StackPanel Margin="0,0,12,0">
<TextBlock HorizontalAlignment="Left"
TextWrapping="WrapWholeWords"
Foreground="#5D5B5D"
FontWeight="Light"
TextAlignment="Justify"
Margin="0,0,12,0"
Padding="0,0,4,0"
Text="Change for this a very large text so it can scroll!!! "></TextBlock>
<Button Content="OK"
HorizontalAlignment="Center"
Margin="0,18"
Padding="42,4"></Button>
</StackPanel>
</ScrollViewer>
</PivotItem>
<PivotItem>
<ScrollViewer VerticalScrollMode="Enabled">
<StackPanel Margin="0,0,12,0">
<TextBlock HorizontalAlignment="Left"
TextWrapping="WrapWholeWords"
Foreground="#5D5B5D"
FontWeight="Light"
TextAlignment="Justify"
Margin="0,0,12,0"
Padding="0,0,4,0"
Text="Change for this a very large text so it can scroll!!! "></TextBlock>
<Button Content="OK"
HorizontalAlignment="Center"
Margin="0,18"
Padding="42,4"></Button>
</StackPanel>
</ScrollViewer>
</PivotItem>
</Pivot>
From your code I saw that you use a StackPanel outside of the Pivot control, and you didn't set the orientation property, so by default the StackPanel stacks items vertically from top to bottom in the order they are declared. This will influence the Vertical-scroll-mode ScrollViewer inside of it.
A ScrollViewer works when its content's size bigger than the ScrollViewer's size, when a ScrollViewer is inside of a StackPanel, it has no limit of size, the size will fit the child inside of it, so can't a ScrollViewer work correctly.
In this case, you can change the StackPanel outside of your Pivot to Grid, it will solve the problem, or you can give your ScrollViewers a limit height like <ScrollViewer VerticalScrollMode="Enabled" Height="300">, this can also solve the problem.

Align content of HubSection to Bottom

I have a HubSection with StackPanel inside. i would like to move StackPanel to the Bottom of Hub Section.
Here is my XAML:
<HubSection Width="783">
<DataTemplate>
<StackPanel VerticalAlignment="Bottom">
<TextBlock ...
</StackPanel>
But I have StackPanel on the Top of the HubSection. How can I fix it ?
You simply need to place your StackPanel inside another container that will fill the entire HubSection, leaving your StackPanel able to align to the bottom of that container:
<HubSection Width="783" VerticalContentAlignment="Stretch">
<DataTemplate>
<Grid>
<StackPanel VerticalAlignment="Bottom">
<TextBlock ...
</StackPanel>
</Grid>

ScrollViewer on ItemsControl is always disabled

This is my UserControl file:
<StackPanel>
<StackPanel HorizontalAlignment="Left" Margin="80,0,0,0">
<Grid Width="1110">
...
</Grid>
</StackPanel>
<ScrollViewer VerticalScrollBarVisibility="Visible" Margin="0 0 90 0">
<ItemsControl MinHeight="400" BorderThickness="0" ItemsSource="{Binding MyObjects}" ItemTemplateSelector="{StaticResource myObjectItemsTemplateSelector}" />
</ScrollViewer>
</StackPanel>
Even though the ItemsControl element has a lot of items, the scrollbar is diabled. Why? What am I doing wrong?
The scrollviewer is inside of a stack panel which will size to as much room as the it's child elements need. You can either set a max height on the scrollviewer or switch the parent container to a grid with verticalalignment of stretch which will size to as much room as available.

Scrolling on an ItemsControl

I have created info inside a PivotItem but for some reason the items do not scroll, I've tried scrolling but it creates a sort of compressed effect and not scrolling down.
I have tried wrapping it with a ScrollViewer and also tried
<ItemsControl.Template>
<ControlTemplate>
<ScrollViewer VerticalScrollBarVisibility="Visible" VerticalScrollMode="Enabled">
<ItemsPresenter />
</ScrollViewer>
</ControlTemplate>
</ItemsControl.Template>
With no luck - can anyone identify what could be wrong?
<PivotItem Header="unread">
<ItemsControl ItemsSource="{Binding Categories}" >
<ItemsControl.Template>
<ControlTemplate>
<ScrollViewer VerticalScrollBarVisibility="Visible" VerticalScrollMode="Enabled" BringIntoViewOnFocusChange="True">
<ItemsPresenter />
</ScrollViewer>
</ControlTemplate>
</ItemsControl.Template>
<ItemsControl.ItemTemplate>
<DataTemplate>
// ---
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</PivotItem>
Just put the ScrollViewer around the ItemsControl, not inside it. Something like this:
<Pivot TabNavigation="Once">
<PivotItem Header="unread">
<ScrollViewer>
<ItemsControl ItemsSource="{Binding Categories}">
//Some ItemsControl properties and stuff
</ItemsControl>
</ScrollViewer>
</PivotItem>
</Pivot>
Solved
For everyone reading this - the problem was that the Pivot was in a StackPanel. And ScrollViewers do not work inside of StackPanels, because these panels have unlimited height (or width, depending on the Orientation), and then there's nothing to scroll as everything fits. You could use a StackPanel inside a ScrollViewer, though.