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Editorial Team
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Asked: 2026-05-23T16:49:01+00:00

I am trying to use a simple ScrollViewer in my program, but I’m having

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I am trying to use a simple ScrollViewer in my program, but I’m having a problem.

If I enclose everything in my program in a ScrollViewer, it works fine:

<Window x:Class="WpfTest.MainWindow"         
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow"
        Name="PrimaryWindow">
    <ScrollViewer>
        <StackPanel>
            <Menu Height="21" VerticalAlignment="Top">
                <MenuItem Header="File"/>
                <MenuItem Header="Edit"/>
            </Menu>
            <StackPanel>
                <TextBlock Text="1"/>
                <TextBlock Text="2"/>
                <TextBlock Text="3"/>
                <TextBlock Text="4"/>
                <TextBlock Text="5"/>
                <TextBlock Text="6"/>
                <TextBlock Text="7"/>
                <TextBlock Text="8"/>
                <TextBlock Text="9"/>
                <TextBlock Text="10"/>
            </StackPanel>
        </StackPanel>
    </ScrollViewer>
</Window>

However, the since the menu is part of the ScrollViewer, the menu scrolls off the screen when the user scrolls down. So I put the ScrollViewer only around the controls under the menu:

<Window x:Class="WpfTest.MainWindow"         
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow"
        Name="PrimaryWindow">
    <StackPanel>
        <Menu Height="21" VerticalAlignment="Top">
            <MenuItem Header="File"/>
            <MenuItem Header="Edit"/>
        </Menu>
        <ScrollViewer>
            <StackPanel>
                <TextBlock Text="1"/>
                <TextBlock Text="2"/>
                <TextBlock Text="3"/>
                <TextBlock Text="4"/>
                <TextBlock Text="5"/>
                <TextBlock Text="6"/>
                <TextBlock Text="7"/>
                <TextBlock Text="8"/>
                <TextBlock Text="9"/>
                <TextBlock Text="10"/>
            </StackPanel>
        </ScrollViewer>
    </StackPanel>
</Window>

But this time, the ScrollViewer doesn’t work! i.e. even if I resize my window to be smaller than the height required by the labels, the scrollbar does not get activated.

What am I doing wrong?

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1 Answer

  1. Editorial Team

    The problem is caused by your root StackPanel, the StackPanel is not constraining the vertical height of the ScrollViewer.

    Try using the DockPanel to position the Menu instead:

    <Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300">
<DockPanel>
    <Menu DockPanel.Dock="Top" Height="21" VerticalAlignment="Top">
        <MenuItem Header="File"/>
        <MenuItem Header="Edit"/>
    </Menu>
    <ScrollViewer>
        <StackPanel>
            <TextBlock Text="1"/>
            <TextBlock Text="2"/>
            <TextBlock Text="3"/>
            <TextBlock Text="4"/>
            <TextBlock Text="5"/>
            <TextBlock Text="6"/>
            <TextBlock Text="7"/>
            <TextBlock Text="8"/>
            <TextBlock Text="9"/>
            <TextBlock Text="10"/>
        </StackPanel>
    </ScrollViewer>
</DockPanel>

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