How can I wrap a long text in a ListBox without using of TextBlock. My code is as follows:
public Sample()
{
InitializeComponent();
quotes.Add("LooooooooooooooooooooooooooongTeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeext");
myListbox.DataContext = quotes;
}
quotes is a list.
XAML:
<ScrollViewer VerticalScrollBarVisibility="Auto" Grid.Row="1" HorizontalScrollBarVisibility="Disabled">
<Grid x:Name="ContentPanel" Margin="12,0,12,0" Grid.Column="1">
<ListBox x:Name="myListbox" ScrollViewer.HorizontalScrollBarVisibility="Disabled" Height="600" ItemsSource="{Binding}" Margin="10,4,10,3">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
</ListBox>
</Grid>
</ScrollViewer>
I have also tried with WrapPanel, but doesn't work.
ItemsPanel controls how ListBox arrange ListBoxItems in certain Layout. Try to define ItemTemplate instead of ItemsPanel, ItemTemplate controls how data in each item displayed, including whether it wrapped or not. Sorry, but I am using TextBlock here, because I can't see why avoid TextBlock. Its even very likely (haven't proved this as for now) that TextBlock is the default ItemTemplate for ListBox.
<ListBox x:Name="myListbox" ScrollViewer.HorizontalScrollBarVisibility="Disabled" Height="600" ItemsSource="{Binding}" Margin="10,4,10,3">
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock TextWrapping="Wrap" Text="{Binding}"/>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Related
I have a WrapPanel that I'm filling in my ViewModel with UserControls:
<WrapPanel Width="250" Orientation="Horizontal" Margin="3">
<ItemsControl ItemsSource="{Binding PlaceableObjectsContent}">
<ItemsControl.ItemTemplate>
<DataTemplate DataType="{x:Type local:PlaceableObjectViewModel}">
<local:PlaceableObjectUserControl>
<local:PlaceableObjectUserControl.InputBindings>
<MouseBinding MouseAction="LeftClick"
Command="{Binding DataContext.OnPlaceableObjectClicked, RelativeSource={RelativeSource AncestorType=ItemsControl}}"
CommandParameter="{Binding}"/>
</local:PlaceableObjectUserControl.InputBindings>
</local:PlaceableObjectUserControl>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</WrapPanel>
When I fill them manuell with random Controls, everything works fine! I already read something about problems because of Using ItemTemplate!?
If its true, how can I manage that?
Thanks
You're putting a single ItemsControl inside a WrapPanel. That won't do anything. If you want your ItemsControl to use a WrapPanel to host its own items, here's how:
<ItemsControl
ItemsSource="{Binding PlaceableObjectsContent}"
Width="250"
Margin="3"
>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Orientation="Horizontal" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<!-- etc. -->
Note that something has to constrain the width of the ItemsControl for this to work: Either it must be limited by the size of its parent, or a Grid Column, or even by setting the Width or MaxWidth properties of the ItemsControl element itself, either directly or via a Style.
I am trying to make a column chart using WPF. For the Y axis I have a list of values which I would like to display on the control.
I have a ListView bound to the collection. How can I get the items to spread over the entire length of the list view rather then squish together at the top? And is the ListViewthe correct control to use for this?
Here is a sample of my Xaml:
<ListView Grid.Row="1" Grid.Column="1" Grid.RowSpan="2"
ItemsSource="{Binding YAxisValues}"
Background="Gray" VerticalContentAlignment="Stretch">
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<Label Content="{Binding Path=Value}"
Foreground="White"
HorizontalAlignment="Left"
FontSize="12" Width="50"/>
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
On the left is the list view as i currently have it.
On the right is my desired result.
How can I change my ListView to get there? Or do I need to use a different control entirely?
with UniformGrid used as ItemsPanel items get equal height
<ListView Name="Axis" Grid.Row="1" Grid.Column="1" Grid.RowSpan="2"
ItemsSource="{Binding YAxisValues}"
Background="Gray" VerticalContentAlignment="Stretch"
ScrollViewer.VerticalScrollBarVisibility="Disabled">
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<UniformGrid Columns="1"/>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemTemplate>
<!--no changes-->
</ListView.ItemTemplate>
</ListView>
there can be a issue when ListView doesn't have enough height for all elements. In that case I would put ListView into ViewBox
Set HorizontalContentAlignment to Stretch for items.
<ListView>
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListView.ItemContainerStyle>
</ListView>
I use a ListBox to show the contents of an ObservableCollection in my view. In my simplified example, I just use an image for each item like that:
<Window>
<Window.Resources>
<DataTemplate DataType="{x:Type viewModel:HealthCriterionViewModel}">
<Image VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Source="Optionsh.png" Stretch="Fill" />
</DataTemplate>
</Window.Resources>
<ListBox ItemsSource="{Binding HealthCriteria}" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Vertical" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" />
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
</ListBox>
</Window>
HealthCriteria is a collection of type HealthCriterionViewModel.
What I get is this:
What I want is this (stretch images to use all available space both vertically and horizontally):
How can I achieve this?
I suggest you can't achieve it with ItemsControl. Because contents presenter size is not fixed, it's scrollable area. So size of each element should be fixed. It can be limited directly in ItemsPanel with "Weight" or "Height" (depends on orientation) properties or limited by content size.
I am new to WPF and as a learning project I opted for a Windows Explorer like File Manager. In this project I want to display the the List view as a icon list that follows flow layout pattern. I tried the solutions given here: WPF: ListView with icons view?. But they are making my icons overlap each other. My icons are basically user controls that are loaded dynamically. This is my code for user control that represents a list view icon:
<UserControl x:Class="MVCP.FileItem"
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"
mc:Ignorable="d" Height="156.767" Width="161.279">
<Grid HorizontalAlignment="Center">
<Image HorizontalAlignment="Center" Height="100" Margin="10,10,10,0" VerticalAlignment="Top" Width="141" Source="fileflat.png"/>
<TextBlock HorizontalAlignment="Center" Margin="10,120,10,5" TextWrapping="Wrap" Text="<Filename>" VerticalAlignment="Center" Height="32" Width="141" FontSize="18" Foreground="White" TextAlignment="Center"/>
</Grid>
</UserControl>
And this is my ListView code:
<ListView x:Name="files" Background="#FF19174B" AllowDrop="True" ScrollViewer.HorizontalScrollBarVisibility="Disabled" PreviewMouseLeftButtonDown="files_PreviewMouseLeftButtonDown" MouseMove="files_MouseMove">
<local:FileItem/>
<local:FileItem/>
<local:FileItem/>
<local:FileItem/>
</ListView>
How can I arrange these user controls so that they can look like Windows Explorer icons?
#AbinMathew gave me a hint for using Panels. So, I changed my code like this and it worked. :)
<ListView x:Name="files" Background="#FF19174B" AllowDrop="True" ScrollViewer.HorizontalScrollBarVisibility="Disabled" PreviewMouseLeftButtonDown="files_PreviewMouseLeftButtonDown" MouseMove="files_MouseMove">
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel/>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemTemplate>
<DataTemplate>
<DockPanel>
<local:FileItem/>
</DockPanel>
</DataTemplate>
</ListView.ItemTemplate>
<local:FileItem/>
<local:FileItem/>
<local:FileItem/>
<local:FileItem/>
</ListView>
Try adding any panel inside your ListView
<ListView x:Name="files" Background="#FF19174B" AllowDrop="True" ScrollViewer.HorizontalScrollBarVisibility="Disabled" PreviewMouseLeftButtonDown="files_PreviewMouseLeftButtonDown" MouseMove="files_MouseMove">
<StackPanel>
<local:FileItem/>
<local:FileItem/>
<local:FileItem/>
<local:FileItem/>
</StackPanel>
</ListView>
In my WPF document i have something like:
<ListBox x:Name="lbNames" Height="400" Width="400">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Element[Icon].Value}" />
<TextBlock Text="{Binding Element[Name].Value}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
But I want this list horizontal and if there is not enough space, I want the next item in a new line.
At the end it should look like a grid.
Optional: If there is not enough space vertically, I want a scrollbar.
You need change items panel to WrapPanel
<ListBox x:Name="lbNames" Height="400" Width="400" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Element[Icon].Value}" />
<TextBlock Text="{Binding Element[Name].Value}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
What you are describing is a WrapPanel. This element will place your TextBlock's in a Grid format, and if they exceed the width of the WrapPanel, then the next element will be forced onto a new line.
See this tutorial.
To make list horizontal, use
Orientation="Horizontal"
in stackpanel. And for vertical scrollbar if it goes higher than it should, use
ScrollViewer.VerticalScrollBarVisibility="Visible".