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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(220.8, 77%, 31%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EEK%3C/text%3E%3C/svg%3E)
.net maui 7.0.81 My app has a ScrollView. On Windows the view doesn't scroll when the mouse wheel is rolled.
VerticalOptions="FillAndExpand"
What can be te reason for that ? It works fine on MacCatalyst.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(22.400000000000002, 3%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EWZ%3C/text%3E%3C/svg%3E)
I created an empty template MAUI project and added several controls in the ScrollView of the MainPage, the ScrollView can scroll when the mouse wheel is rolled. I can't reproduce your issue. Could you share some code snippets about the ScrollView so that I can test?
The .xaml file is shown below. In C# code a lot of frames containing a lot of labels are added to "GlobalStackLayout" BTW: PgUp, PgDn and arrow up/down doesn't work either.
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage
x:Class="MyApp.View.MainPage"
xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:ios="clr-namespace:Microsoft.Maui.Controls.PlatformConfiguration.iOSSpecific;assembly=Microsoft.Maui.Controls"
xmlns:viewmodel="clr-namespace:MyApp.ViewModel"
Title="something Calculator"
ios:Page.UseSafeArea="True"
x:DataType="viewmodel:MainPageViewModel">
<StackLayout
x:Name="TopStack"
Orientation="Vertical">
<StackLayout
Orientation="Horizontal">
<Button
Command="{Binding ControlsButton_ClickedCommand}"
HorizontalOptions="Start"
Text="Controls" />
<Button
Command="{Binding HelpPageCommand}"
HorizontalOptions="Start"
Text="?" />
<ActivityIndicator
HorizontalOptions="FillAndExpand"
IsRunning="{Binding TheActivityIndicatorRunning}"
IsVisible="{Binding TheActivityIndicatorRunning}"
Color="{StaticResource Primary}"
VerticalOptions="FillAndExpand" />
</StackLayout>
<Grid
IsVisible="{Binding HeaderGridIsVisible}"
VerticalOptions="Start">
<Grid.RowDefinitions>
<RowDefinition
Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition
Width="*" />
<ColumnDefinition
Width="*" />
<ColumnDefinition
Width="*" />
<ColumnDefinition
Width="*" />
<ColumnDefinition
Width="*" />
</Grid.ColumnDefinitions>
<Label
x:Name="SelItmsLabel"
Grid.Row="0"
Grid.Column="2"
FontAttributes="Bold"
HorizontalOptions="CenterAndExpand"
Text="Select Item(s):"
VerticalOptions="End" />
<Label
x:Name="DepositLabel"
Grid.Row="0"
Grid.Column="3"
HorizontalOptions="EndAndExpand"
Text="Deposit"
TextDecorations="Underline"
VerticalOptions="End" />
<Label
x:Name="BalanceLabel"
Grid.Row="0"
Grid.Column="4"
HorizontalOptions="End"
Text="Balance"
TextDecorations="Underline"
VerticalOptions="End" />
</Grid>
<ScrollView
x:Name="theXamlScrollView"
VerticalOptions="FillAndExpand"
VerticalScrollBarVisibility="Always">
<StackLayout
x:Name="GlobalStackLayout" />
</ScrollView>
</StackLayout>
</ContentPage>
I test the code snippets you provided, I try many frames like the following code, but I still cannot reproduce the issue. For further investigation, could you share the ViewModel？ What's the detailed VS version? And you can check if ScrollView expands to its full content height and doesn't scroll. Please see Layout behavior changes from Xamarin.Forms - .NET MAUI | Microsoft Learn
<ScrollView
x:Name="theXamlScrollView"
VerticalOptions="FillAndExpand"
VerticalScrollBarVisibility="Always">
<StackLayout
x:Name="GlobalStackLayout">
<Frame>
<Label
Text="Hello, World!"
SemanticProperties.HeadingLevel="Level1"
FontSize="32"
HorizontalOptions="Center" />
</Frame>
......// a lot of frame
</StackLayout>
</ScrollView>
I forgot that the labels inside the frames are inside a grid. That is GlobalStackLayout contains a lot of frames gontaining a grid containing a lot of labels. Do you have the top rows like in my xaml ?
I have the top rows like in your xaml. As you described, I modify the Grid and Frame in the ScrollView, does the page like the following format? (I still cannot reproduce your issue.)
<StackLayout ..>
<StackLayout ..>
<Grid...>
<ScrollView x:Name="theXamlScrollView"...>
<StackLayout ..>// GlobalStackLayout
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
// a lot of rows (one frame as one row)
</Grid.RowDefinitions>
<Frame Grid.Row="0">
<Label... />
</Frame>
<Frame Grid.Row="1">
<Label... />
</Frame>
......// a lot of frames， Grid.Row = 2, 3, 4, 5, 6 .....
</Grid>
</StackLayout>
</ScrollView>
</StackLayout>
Oops. It turns out that the error goes away if I disable X-Mouse Button Control (which I had running to get "natural" scroll direction).
Sorry for the inconvenience!
-- Eigil
Never mind, thanks for your sharing.