I'm trying to achieve the following effect: a scrollable (vertically) list of items; each item should be scrollable horizontally if there is such need. I tried the following code:
<ScrollViewer x:Name="historyViewer"
VerticalScrollMode="Enabled" VerticalScrollBarVisibility="Hidden"
HorizontalScrollMode="Disabled" HorizontalScrollBarVisibility="Hidden">
<ItemsControl ItemsSource="{Binding History}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Vertical" HorizontalAlignment="Stretch">
<ScrollViewer VerticalScrollMode="Disabled" VerticalScrollBarVisibility="Hidden"
HorizontalScrollMode="Enabled" HorizontalScrollBarVisibility="Hidden">
<TextBlock Foreground="{ThemeResource PhoneMidBrush}" FontSize="{ThemeResource TextStyleExtraLargeFontSize}" HorizontalAlignment="Left" Text="{Binding Expression}" />
</ScrollViewer>
<ScrollViewer x:Name="resultScroll" VerticalScrollMode="Disabled" VerticalScrollBarVisibility="Hidden"
HorizontalScrollMode="Enabled" HorizontalScrollBarVisibility="Hidden">
<TextBlock FontSize="{ThemeResource TextStyleExtraLargePlusFontSize}" HorizontalAlignment="Right" Text="{Binding Result}" />
</ScrollViewer>
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</ScrollViewer>
The problem is, that if list items are too wide, they extend width of the main scrollviewer instead of becoming scrollable - even though its horizontal alignment is set to stretch.
How can I fix that?
Related
I have the following StackPanel inside a ScrollViewer that shows User Control elements Whenever a specific event occurs:
Note: many UserControls might appear in the StackPanel that's why I added a Scrollviewer
<ScrollViewer
VerticalScrollBarVisibility="Auto"
Grid.Row="2"
CanContentScroll="True"
Grid.ColumnSpan="2">
<StackPanel Orientation="Vertical">
<ItemsControl ItemsSource="{Binding UserControls}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<views:UserControl/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</StackPanel>
</ScrollViewer>
Although, the StackPanel is still going out of range and the scroll bars doesn't show and doesn't work!
I tried fixing the height of both the StackPanel and the ItemsControl but it does't seem to work either...
Window Layout containing the ScrollViewer:
<Grid Margin="0,15,0,0">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Label
Content="This is a Label"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Margin="5,5,0,0"
FontSize="15"
Grid.Row="0" Grid.ColumnSpan="2">
</Label>
<StackPanel Grid.Row="1" Orientation="Horizontal" Grid.ColumnSpan="2">
<ComboBox
ItemsSource="{Binding Something}"
Text="Confirm with..."
SelectedItem="{Binding Something}"/>
<Button
HorizontalAlignment="Left"
Margin="5"
Content="Add new UserControl"
Command="{Binding Path=AddUserControl}"/>
</StackPanel>
<ScrollViewer
VerticalScrollBarVisibility="Auto"
Grid.Row="2"
CanContentScroll="True"
HorizontalScrollBarVisibility="Auto">
<StackPanel Orientation="Vertical">
<ItemsControl ItemsSource="{Binding UserControls}" Height="300">
<ItemsControl.ItemTemplate>
<DataTemplate>
<views:UserControl/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</StackPanel>
</ScrollViewer>
</Grid>
Here's my UserControl that is added to the StackPanel Inside the ScrollViewer:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<StackPanel
Orientation="Horizontal"
Grid.Row="0">
<Button
Name="DeleteFilter"
HorizontalAlignment="Left"
Margin="5"
Content="-"/>
<ComboBox
Margin="5"
IsEditable="False"
IsReadOnly="True"
Width="150"
ItemsSource="{Binding SomeObject}"
DisplayMemberPath="Name"
SelectedItem="{Binding SomeObjectProperty}"/>
<ComboBox
Margin="5"
IsEditable="False"
IsReadOnly="True"
Width="150"
ItemsSource="{Binding AnotherObject}"
DisplayMemberPath="Name"
SelectedItem="{Binding AnotherObjectProperty}"/>
<TextBox
x:Name="Value"
Text="{Binding TextBoxValueString}"
TextAlignment="Center"
Width="100"
Margin="5"
Visibility="{Binding TextBoxVisibility}"/>
</StackPanel>
</Grid>
I'm new to XAML and WPF.
Any Suggestions?
ScrollViewers and StackPanel don't work well together. This is because a StackPanel measures its child elements with infinite horizontal space if its Orientation property is set to Horizontal and infinite vertical space if it is set to Vertical. Please refer to my answer here for more information:
How to scroll the datagrid in stackpanel?
So you should replace the StackPanel with another Panel or remove it altogether:
<ScrollViewer
VerticalScrollBarVisibility="Auto"
Grid.Row="2"
CanContentScroll="True"
HorizontalScrollBarVisibility="Auto">
<ItemsControl ItemsSource="{Binding UserControls}" Height="300">
<ItemsControl.ItemTemplate>
<DataTemplate>
<views:UserControl/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</ScrollViewer>
I was able to get it run with this setting:
<ScrollViewer HorizontalScrollBarVisibility="Disabled"
VerticalScrollBarVisibility="Auto"
Grid.RowSpan="10">
<StackPanel Orientation="Vertical"
Grid.RowSpan="6"
Name="SPanel"
Margin="0,0,-0.4,1.4"
CanVerticallyScroll="True">
<Border BorderBrush="Black"
BorderThickness="1"
Margin="3"
Grid.Row="0"
Name="ChartHolder0">
<dvc:Chart Cursor="Cross"
Background="#FFFFFCF2" />
</Border>
<Border BorderBrush="Black"
BorderThickness="1"
Margin="3"
Grid.Row="0"
Name="ChartHolder0">
<dvc:Chart Cursor="Cross"
Background="#FFFFFCF2" />
</Border>
<Border BorderBrush="Black"
BorderThickness="1"
Margin="3"
Grid.Row="0"
Name="ChartHolder0">
<dvc:Chart Cursor="Cross"
Background="#FFFFFCF2">
</dvc:Chart>
</Border>
</StackPanel>
</ScrollViewer>
And this is what I get:
Was looking for a fix for this problem and Mishka's answer worked for me.
I don't have enough reputation to comment on an answer, but wanted to say that Background="White" fix from Mishka does work for me on Silverlight (didn't try WPF).
<ScrollViewer Background="White">
<StackPanel Margin="5" Background="White">
Works, if I only put Background on the StackPanel the 5 pixel Margin on the stackpanel doesn't scroll. If I don't put Background on either then both the 5 pixel margin and any margins on controls inside the stackpanel dont scroll.
You are missing a Background for either the StackPanel or ItemsControl(Your choise).
Default Background is Null.
With Background Null, the ScrollViewer doesn't get mouse events for the mouse wheel,
and doesn't scroll.
Got this XAML for my Data Binded Label:
<ItemsControl
Name="itClblArtiksel"
ItemsSource="{Binding ArtikelInfo}"
Margin="925,45,0,0"
Width="89"
Height="31"
HorizontalAlignment="Left"
VerticalAlignment="Top"
BorderThickness="1"
BorderBrush="Black"
FontWeight="Bold"
>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Label
x:Name="lblArtikelNr"
Content="{Binding ArtNr}"
/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
i already tried to set the VerticalContentAlignment of the ItemsControl and Label to Center but the content dont get centered... any ideas?
EDIT
Picture to demonstrate the situation:
as you can see the bold one (so the one with <itemcontrol>) are in the air
EDIT 2
The accepted answer gave me the final solution:
<ItemsControl Name="itClblArtiksel" ItemsSource="{Binding ArtikelInfo}" VerticalContentAlignment="Center" Height="37" Margin="925,45,236,38" BorderThickness="1" BorderBrush="Black" FontWeight="Bold">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid Height="37">
<Label
VerticalAlignment="Center"
x:Name="lblArtikelNr"
Content="{Binding ArtNr}"
/>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
setting a Grid around the Label with the same Height as the ItemsControland setting then the VerticalAlignment to Center was the workaround.
This will center the labels vertically within their parents. In your case, this will have no effect because the items are only as tall as their content.
<DataTemplate>
<Label
VerticalAlignment="Center"
x:Name="lblArtikelNr"
Content="{Binding ArtNr}"
/>
</DataTemplate>
If you want them to be visibly centered vertically, you need to give them room for that to happen:
<DataTemplate>
<Grid Height="100">
<Label
VerticalAlignment="Center"
x:Name="lblArtikelNr"
Content="{Binding ArtNr}"
/>
</Grid>
</DataTemplate>
But since your ItemsControl has a fixed height of 31, this will simply make the items larger than their parent, pushing the label out of sight. You need to remove that. I also urge you to consider getting accustomed to using StackPanel and Grid for layout, rather than setting very large margins on everything. The margins method makes it hard to rearrange your UI.
How about setting the VerticalAlignment property of the Label to Center?
<Label x:Name="lblArtikelNr" Content="{Binding ArtNr}" VerticalAlignment="Center" />
This works for me:
<ItemsControl
BorderThickness="1"
BorderBrush="Black"
FontWeight="Bold">
<ItemsControl.Items>
<system:String>wefwefwefwe</system:String>
<system:String>wefwefwefwe</system:String>
<system:String>wefwefwefwe</system:String>
<system:String>wefwefwefwe</system:String>
</ItemsControl.Items>
<ItemsControl.ItemTemplate>
<DataTemplate DataType="{x:Type system:String}">
<Label Height="50" Foreground="Black" Content="{Binding}" BorderThickness="1"
BorderBrush="Black" VerticalContentAlignment="Center" />
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
I am using WrapPanel for dynamic content display line by line order like windows explorer windows, its working but when the horizontal and vertical ScrollBar enabled the WrapPanel display the contents are single line. Here we have contents less than 4 it shows perfect otherwise display single line.
Here is my xaml code
<ScrollViewer VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Disabled" Margin="0,10">
<ItemsControl ItemsSource="{Binding Designs}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<TextBlock HorizontalAlignment="Left" Margin="200,11,0,0" TextWrapping="Wrap" Text="{Binding DsnName}" VerticalAlignment="Top" FontSize="16" FontFamily="Segoe UI Semibold" Foreground="#FF878787"/>
<Image Source="{Binding Image,FallbackValue={StaticResource Lost},TargetNullValue={StaticResource Lost},Mode=TwoWay}" Stretch="Fill" RenderOptions.BitmapScalingMode="HighQuality" HorizontalAlignment="Left" Margin="10,10,0,10" Width="174"/>
<CheckBox HorizontalAlignment="Right" Margin="0,14,12,0" VerticalAlignment="Top" Width="16"/>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
</ScrollViewer>
How can fix this issue
Set height of WrapPanel or disable scrolling
I have the below ItemsControl which wraps items perfectly but it does not have a vertical scrollbar to see the wrapped items. How can I get the scrollbar to show?
<ItemsControl x:Name="tStack" Grid.Column="0" Grid.Row="1"
ItemsSource="{Binding Shows.View}"
HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
BorderThickness="0.5">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Orientation="Horizontal" HorizontalAlignment="Left"
VerticalAlignment="Top"/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Viewbox HorizontalAlignment="Left" Height="250">
<Controls1:MyShowsUserControl Padding="10"/>
</Viewbox>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
ItemsControl by default does not wrap ItemsPresenter in ScrollViewer so you have to do it manually like so:
<ScrollViewer Grid.Column="0" Grid.Row="1">
<ItemsControl x:Name="tStack" ... >
<!-- .... -->
</ItemsControl>
</ScrollViewer>
Wrap your ItemsControl in a ScrollViewer control.
<ScrollViewer VerticalScrollBarVisibility="Auto">
<ItemsControl ...
</ScrollViewer>
Remember to put the Grid.Column="0" Grid.Row="1" attributes in the ScrollViewer instead of in your ItemControl.
Use ScrollViewer and set the property "VerticalScrollBarVisibility" true.
< ScrollViewer VerticalScrollBarVisibility="Auto">
Here your ItemsControl
< /ScrollViewer>
I have a collection of elements, each one with a name and a subcollection of image blobs.
I want to display an Accordion, with each item representing each of the MainElements. inside each element, I display the images in the subcollecion of said MainElement.
The Accordion gets resized by the user, so I use a wrappanel for presenting the images. When the accordion is wide enough, the images reorder themselves fitting as many as posible in each row.
the problem comes when the wrappanel only displays one image per row (because there's no space enough for more), the image list continues, but I can't see all the images, because they don't fit inside the control's height.
I need a vertical scrollbar to be displayed inside the AccordionItem so I can scroll down the image list.
So, here's my code:
<layoutToolkit:Accordion Width="Auto" Height="Auto" ItemsSource="{Binding MainElementCollection}">
<layoutToolkit:Accordion.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding MainElementName}" />
</DataTemplate>
</layoutToolkit:Accordion.ItemTemplate>
<layoutToolkit:Accordion.ContentTemplate>
<DataTemplate>
<ItemsControl ItemsSource="{Binding SubElementCollection}" ScrollViewer.VerticalScrollBarVisibility="Auto" >
<ItemsControl.Template>
<ControlTemplate>
<controlsToolkit:WrapPanel />
</ControlTemplate>
</ItemsControl.Template>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid>
<Image Margin="2" Width="150" Source="{Binding PreviewImage, Converter={StaticResource ImageConverter}}" />
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</DataTemplate>
</layoutToolkit:Accordion.ContentTemplate>
</layoutToolkit:Accordion>
http://www.silverlightshow.net/tips/How-to-add-scrollbars-to-ItemsControl.aspx suggests that I should surround my wrappanel with a scrollviewer, like this
<ItemsControl.Template>
<ControlTemplate>
<scrollviewer>
<controlsToolkit:WrapPanel />
</scrollviewer>
</ControlTemplate>
</ItemsControl.Template>
But then my wrappanel gets really small and I can only see a small vertical scrollbar
Any ideas?
Thanks a lot.
Edit: I figured thatthe wrappanel loses its width when used in the controltemplate
It should be used as follows:
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<controlsToolkit:WrapPanel ScrollViewer.VerticalScrollBarVisibility="Visible" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
Anyway, I tried adding the ScrollViewer.VerticalScrollBarVisibility="Visible" line but I'm stuck again.
Edited again:
Now my wrappanel looks like this:
<ItemsControl ItemsSource="{Binding StageVideos}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<controlsToolkit:WrapPanel />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Image Margin="2" Width="150" Cursor="Hand" MouseLeftButtonDown="videoPreview_MouseLeftButtonDown" Tag="{Binding}" Source="{Binding PreviewImage, Converter={StaticResource ImageConverter}}" />
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.Template>
<ControlTemplate>
<ScrollViewer VerticalScrollBarVisibility="Visible">
<ItemsPresenter />
</ScrollViewer>
</ControlTemplate>
</ItemsControl.Template>
</ItemsControl>
I'm using a wrappanel as the items panel, and I'm using the ControlTemplate to surround the presenter with a scrollviewer. Still, no luck :/
It's working perfectly. i had two different Accordions on the same page, and I was checking my code changes in the one whose code I wasn't touching.
Sometimes you need to pause, go for a walk and then look at the whole screen.
The right code is the last one:
<ItemsControl ItemsSource="{Binding StageVideos}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<controlsToolkit:WrapPanel />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Image Margin="2" Width="150" Cursor="Hand" MouseLeftButtonDown="videoPreview_MouseLeftButtonDown" Tag="{Binding}" Source="{Binding PreviewImage, Converter={StaticResource ImageConverter}}" />
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.Template>
<ControlTemplate>
<ScrollViewer VerticalScrollBarVisibility="Visible">
<ItemsPresenter />
</ScrollViewer>
</ControlTemplate>
</ItemsControl.Template>
</ItemsControl>