Scroll

VirtualizingPanel.ScrollUnit="Pixel" を設定する。

MainWindow.xaml

<Window x:Class="WpfApp19.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp19"
        mc:Ignorable="d"
        Title="MainWindow" Height="250" Width="400">
    <Grid>
        <ListView x:Name="lstView" Margin="30" ItemsSource="{Binding arrayString}" VirtualizingPanel.ScrollUnit="Pixel">
            <ListView.ItemTemplate>
                <DataTemplate>
                    <Button Height="50" Width="100" Content="{Binding}"/>
                </DataTemplate>
            </ListView.ItemTemplate>
        </ListView>
    </Grid>
</Window>