ScrollViewer: Disable Snap (elastic band effect)


I have a ScrollViewer on my MainPage that contains all other elements (except the AppBars of course). Scrolling works fine, but I want to disable the snap behavior (you drag the whole page to the left, release it and it will snap back). See the image (Background of ScrollViewer: Black, Background of Grid: White). So how can I disable this behavior? Also known as overscroll or bounce effect.

I just found out about <em>IsScrollInertiaEnabled</em>, but setting this to false doesn't help.

<ScrollViewer VerticalScrollMode="Disabled" VerticalScrollBarVisibility="Disabled" HorizontalScrollBarVisibility="Visible" ZoomMode="Disabled" HorizontalSnapPointsType="None" VerticalSnapPointsType="None" ZoomSnapPointsType="None"> <VisualStateManager>...</VisualStatemanager> <Grid Style="{StaticResource LayoutRootStyle}"> <Grid.RowDefinitions> <RowDefinition Height="140"/> <RowDefinition Height="*"/> </Grid.RowDefinitions> <!-- Back button and page title --> ... <!-- My content grid --> </Grid> </ScrollViewer>

<img alt="enter image description here" class="b-lazy" data-src="https://i.stack.imgur.com/f1xvO.jpg" data-original="https://i.stack.imgur.com/f1xvO.jpg" src="https://etrip.eimg.top/images/2019/05/07/timg.gif" /><img alt="enter image description here" class="b-lazy" data-src="https://i.stack.imgur.com/YKpOM.jpg" data-original="https://i.stack.imgur.com/YKpOM.jpg" src="https://etrip.eimg.top/images/2019/05/07/timg.gif" />


Sorry misunderstood what you meant.. Post some additional xaml if you can.. scrollviewer container xaml might help

try something like this

<Grid Style="{StaticResource LayoutRootStyle}"> <Grid.RowDefinitions> <RowDefinition Height="140"/> <RowDefinition Height="*"/> </Grid.RowDefinitions> <!-- Back button and page title --> ... <!-- My content grid --> <ScrollViewer Grid.Row="1" VerticalScrollMode="Disabled" VerticalScrollBarVisibility="Disabled" HorizontalScrollBarVisibility="Visible" ZoomMode="Disabled" HorizontalSnapPointsType="None" VerticalSnapPointsType="None" ZoomSnapPointsType="None"> // put your content here directly or in a grid </ScrollViewer> <VisualStateManager>...</VisualStatemanager> </Grid>


To solve the problem set height of the object inside the scroll viewer, let say.. if you have a stack panel, set the Height="2000" or else... and DONE. Note: Don't put any height in scroll viewer.


I have other suggestion, i have faced similar problem, but i wanted to disable bounce, when only 1 element is in flipview.

So i did this:

Created a TemplatedControl:

CustomFlipView and it inherited from FlipView:

public sealed class CustomFlipView : FlipView

Next, i edited the FlipViewStyle to get the style code of FlipView ( yea, that big one ).

And copy-pasted into the Generic.xaml, into generated

<Style TargetType="local:CustomFlipView">

So this gives me an opportunity to add names to such xaml controls, that by default are not named.

I have added a name to ItemsPresenter:

<ScrollViewer x:Name="ScrollingHost" AutomationProperties.AccessibilityView="Raw" BringIntoViewOnFocusChange="{TemplateBinding ScrollViewer.BringIntoViewOnFocusChange}" HorizontalScrollMode="{TemplateBinding ScrollViewer.HorizontalScrollMode}" HorizontalSnapPointsType="MandatorySingle" HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}" IsTabStop="False" IsHorizontalRailEnabled="{TemplateBinding ScrollViewer.IsHorizontalRailEnabled}" IsHorizontalScrollChainingEnabled="{TemplateBinding ScrollViewer.IsHorizontalScrollChainingEnabled}" IsVerticalScrollChainingEnabled="{TemplateBinding ScrollViewer.IsVerticalScrollChainingEnabled}" IsVerticalRailEnabled="{TemplateBinding ScrollViewer.IsVerticalRailEnabled}" IsDeferredScrollingEnabled="{TemplateBinding ScrollViewer.IsDeferredScrollingEnabled}" Padding="{TemplateBinding Padding}" TabNavigation="{TemplateBinding TabNavigation}" VerticalSnapPointsType="MandatorySingle" VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}" VerticalScrollMode="{TemplateBinding ScrollViewer.VerticalScrollMode}" ZoomMode="Disabled"> <ItemsPresenter x:Name="FlipViewItemsPresenter"/> </ScrollViewer>

Next in the code of CustomFlipView i did this:

public sealed class CustomFlipView : FlipView //this line is indented. { private ItemsPresenter itemsPresenter; public CustomFlipView() { this.DefaultStyleKey = typeof(CustomFlipView); } protected override void OnApplyTemplate() { base.OnApplyTemplate(); itemsPresenter = GetTemplateChild("FlipViewItemsPresenter") as ItemsPresenter; FixateItems(); } protected override void OnItemsChanged(object e) { base.OnItemsChanged(e); FixateItems(); } private void FixateItems() { if (itemsPresenter != null) { if (this.Items.Count < 2) { itemsPresenter.ManipulationMode = ManipulationModes.None; } else { itemsPresenter.ManipulationMode = ManipulationModes.System; } } } }

Hope this could give you a hint.


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