C# WPF ScrollViewer in UserControl doesn't work

Question

I need some help with my ScollerViewer. Here is my code:

<UserControl x:Class="ConfigUI.Views.ProfileListView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
             xmlns:local="clr-namespace:ConfigUI.Views"
             mc:Ignorable="d" 
             HorizontalAlignment="Center" VerticalAlignment="Top" 
             d:DesignHeight="700" d:DesignWidth="960">
    <Grid Margin="20" Height="500"
          ScrollViewer.CanContentScroll="True"
          ScrollViewer.VerticalScrollBarVisibility="Visible">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>

       <Border ...
       /Border>

       <Border ...  /Border>

       <Border ... /Border>

   </Grid>
</UserControl>

What I want is to show a ScrollBar when this control shows and users can scroll to see the contents.

But now the scrollBar just won't show...

Anybody can help? Thanks.

@Clint, tried that. Still not working.

Ken
– Ken

2020-02-09 05:12:48 +00:00
Commented Feb 9, 2020 at 5:12 — Ken
– Ken, Commented Feb 9, 2020 at 5:12
let me know if the answer below works

Clint
– Clint

2020-02-09 05:21:22 +00:00
Commented Feb 9, 2020 at 5:21 — Clint
– Clint, Commented Feb 9, 2020 at 5:21

Ken · Accepted Answer · 2020-02-09 05:34:13Z

1

You cannot have ScrollViewer on Grid directly

Try this structure


<ScrollViewer VerticalScrollBarVisibility="Visible" CanContentScroll="True">
    <Grid Margin="20" Height="Auto">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>

       <Border ...
       /Border>

       <Border ...  /Border>

       <Border ... /Border>

   </Grid>
</ScrollViewer>

edited Feb 9, 2020 at 5:34

Ken

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answered Feb 9, 2020 at 5:15

Clint

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4 Comments

Ken Over a year ago

Thanks. It still doesn't work. I finally made it work by changing the Height of the Grid to 1000 then it works.

Ken Over a year ago

Now I know the height of the grid has to be longer than the height of the UserControl.

Clint Over a year ago

set the Height to Auto

Clint Over a year ago

so as the grid grows out of the its container then you would see the scollbar appear

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