I have a data bound Listbox as shown below. I want the textblock that holds the data to wrap. And I have not been able to.
What is the problem here?
Here is my code:
<DataTemplate x:Key="policyLbTemplate">
<StackPanel>
<TextBlock Text="{Binding name}" FontWeight="Bold"/>
<TextBlock Text="{Binding description}" TextWrapping="Wrap" />
</StackPanel>
</DataTemplate>
<ListBox VerticalAlignment="Stretch" HorizontalAlignment="Stretch" ItemsSource="{Binding Policies}"
ItemTemplate="{StaticResource policyLbTemplate}"
HorizontalContentAlignment="Stretch" />
You need to add one property to the list box: ScrollViewer.HorizontalScrollBarVisibility="Disabled", then the text will wrap (otherwise it grows offscreen). I have done it in the following code and it works fine for me.
<ListBox Name="lstbIcons" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch"
VerticalAlignment="Stretch" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding UserActionName}" FontWeight="Bold"/>
<TextBlock Text="{Binding Description}" TextWrapping="Wrap" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
This is most likely because there is nothing restricting the width of the TextBlock so that it is growing offscreen. Do Horizontal scrollbars appear?
See the following related questions and try the solutions described:
WP7 TextBlock inside a ListBox not wrapping text
Force TextBlock to wrap in WPF ListBox
windows phone 7 TextBlock TextWrapping not honored in listbox
http://social.msdn.microsoft.com/forums/en-US/wpf/thread/37236ac6-05c3-4acc-baca-abc871ba64e0
Related
I am unable to stretch the textbox horizontally fit its container.
NOTE:
I do set the HorizontalAlignment property.
I also tried binding the width of the textbox to its containers width.
Neither worked for me.
<ListView Grid.Row="1" Grid.Column="0" ItemsSource="{Binding ConsoleLines}" Background="Black" >
<ListView.ItemTemplate>
<DataTemplate>
<TextBox Text="{Binding ElementName=UserControl, Path=DataContext.Command, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
TextChanged="OnTextChanged" KeyDown="OnKeyDown"
HorizontalAlignment="Stretch" Padding="5" Background="Black" Foreground="LightGray" />
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
Try setting the ListView.HorizontalContentAlignment Property to Stretch instead. From the linked page:
... you can set the HorizontalContentAlignment property to Stretch, which stretches the child element to fill the allocated space of the parent element
You must have misunderstood the answer, because it certainly does stretch each item across the entire width of the GridView. Try this:
<ListView Grid.Row="1" Grid.Column="0" ItemsSource="{Binding ConsoleLines}"
Background="Black" HorizontalContentAlignment="Stretch">
<ListView.ItemTemplate>
<DataTemplate>
<TextBox Text="Some simple text" Background="White"
Foreground="LightGray" />
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
you should set the HorizontalContentAlignment="Stretch" of the ListView
<ListView ItemsSource="{Binding Collection, Source={StaticResource viewmodel}}" Background="Black" HorizontalContentAlignment="Stretch" >
<ListView.ItemTemplate>
<DataTemplate>
<TextBox HorizontalAlignment="Stretch" Padding="0" Background="Green" Foreground="White" Text="" />
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
In WPF, I am using the MVVM model.
I have a View with a Dockpanel and I want to add dynamically StackPanels with a Label and TextBox for all Harddisks found over the Binding.
Therefore my XAML looks like:
<DockPanel Grid.Row="1" HorizontalAlignment="Stretch" Margin="5">
<ItemsControl ItemsSource="{Binding Harddisks}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel DockPanel.Dock="Right" HorizontalAlignment="Right" Margin="2.5,0,0,0">
<Label Content="{Binding Path=Label}" />
<TextBox Text="{Binding Path=GB_Free}" Width="100" IsReadOnly="True"/>
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
It should be four Labels and TextBoxes, but only the first Label and TextBox are shown.
Why?
Your items in your ItemsControl are not actually direct children of the DockPanel. You need to change the ItemsControl to specify that the DockPanel is the Panel. The following will cause the ItemsControl to create a DockPanel and place all the items inside it (rather than the StackPanel that ItemsControl uses by default).
More Info: MSDN: ItemsControl.ItemsPanel Property
<ItemsControl ItemsSource="{Binding Harddisks}">
<ItemsControl.ItemsPanel>
<DockPanel Grid.Row="1" HorizontalAlignment="Stretch" Margin="5" />
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel DockPanel.Dock="Right" HorizontalAlignment="Right" Margin="2.5,0,0,0">
<Label Content="{Binding Path=Label}" />
<TextBox Text="{Binding Path=GB_Free}" Width="100" IsReadOnly="True"/>
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
I have a ListBox that contains TextBlocks.
Sometimes the content of a TextBlock is too long and I want the height of this entry to double or triple as needed to accommodate the text.
I tried TextWrapping="Wrap" but it doesn't work. Every TextBlock is still just one line in height.
Is there an easy way to fix the problem in XAML? Thanks.
* Additional info: I tried to simplify the question but perhaps the complete scenario is better.
I have a listbox whose entries are displayed according to a template in code below.
Each entry has 2 pieces of info: a product price followed by product name.
I don't want to use the horizontal scrollbar in the listbox and want the product name to be displayed in 2 or more lines if necessary. The product name is the 2nd TextBlock.
Here's my XAML:
<ListBox Name="listBox1" ItemsSource="{Binding}" Margin="10" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock MinWidth="40" TextAlignment="Right" Text = "{Binding ProductPrice}" />
<TextBlock Text = "{Binding ProductName}" TextWrapping="Wrap" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Disable the listbox horizontal scrollViewer. This way the textBlock will be forced to wrap.
XAML:
<ListBox ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<TextBlock TextWrapping="Wrap"/>
</ListBox>
Example result:
Edit:
From the XAML you added I'm confident that the problem lays in the StackPanel.
Try replacing it with Grid for example:
<ListBox Name="listBox1" ItemsSource="{Binding}" Margin="10" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<TextBlock MinWidth="40" TextAlignment="Right" Text = "{Binding ProductPrice}" />
<TextBlock Grid.Column="1" Text = "{Binding ProductName}" TextWrapping="Wrap" />
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
StackPanel doesn't limit the content size, therefore the textBlock doesn't knows where the space ends , and the wrapping doesn't happens.
You are using StackPanel. Try using DockPanel:
<DockPanel>
<TextBlock DockPanel.Dock="Left" MinWidth ="40" TextAlignment="Right" Text = "11.12" />
<TextBlock Text = "{Binding LongText}" DockPanel.Dock="Right" TextWrapping="Wrap" />
</DockPanel>
For Example:
this will help you do that. Dont Size the TextBlock just size the scroll viewer because texblock needs to be variable so ScrollViewer will apply Scrollbar once it goes beyond the size of ScrollViewer .
<ScrollViewer HorizontalScrollBarVisibility="Auto"
VerticalScrollBarVisibility="Auto">
<TextBlock/>
</ScrollViewer>
For ListBoxItem
<ListBox ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListBox.Items>
<TextBlock Text="{Binding LongText}" TextWrapping="Wrap"/>
</ListBox.Items>
</ListBox>
I have a TextBox in my application that i am developing and the binding is done in the xaml
I want to be able to raise an event when the binding of the TextBox Text Property is completed meaning when the text is loaded/changed through binding into the TextBox how do i achive this?
I tried TextChanged Event also Loaded Event but no luck right after the Binding is complected so how do i do it?
<ListBox x:Name="listBoxCategories" Background="Transparent" BorderThickness="0" Grid.Row="4" Grid.ColumnSpan="2" Margin="0" Padding="0" ItemContainerStyle="{StaticResource ListBoxItemStyle}" ItemsSource="{Binding ElementName=discussion_categoryDomainDataSource, Path=Data}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel x:Name="stackPanelCategory" Orientation="Vertical" Margin="0" VerticalAlignment="Stretch" HorizontalAlignment="Stretch">
<TextBlock x:Name="TextBlockCategoryId" Text="{Binding Path=CategoryID}" />
<toolkit:Expander IsExpanded="True" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Style="{StaticResource ForumExpanderStyleRight}">
<toolkit:Expander.Header>
<TextBlock FontSize="16" FontWeight="Bold" Foreground="White" Margin="4,0,4,0" Text="{Binding CategoryName}" LayoutUpdated="TextBlock_LayoutUpdated" />
</toolkit:Expander.Header>
<ListBox x:Name="listBoxBoards" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Background="Transparent" BorderThickness="0" Margin="0" Padding="0" ItemContainerStyle="{StaticResource ListBoxItemStyle}" ItemsSource="{Binding CategoryBoards}">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Margin="0" HorizontalAlignment="Stretch" x:Name="GridBoard">
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</toolkit:Expander>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
at this line
<TextBlock x:Name="TextBlockCategoryId" Text="{Binding Path=CategoryID}" />
I want an event where when the Binding is completed i want to give a different data source for the list box under the parent stack panel so i need the binding event so when i have the catedory id int he text block which later will be hidden in the xaml ( which now is not collapsed for testing reasons )
This is a slightly peculiar thing to want to do, it might help if you tell us why you are wanting to do this?
However, with no other information to hand, I will propose a solution.
If the TextBox API events do not provide the infomation you need, try handing the LayoutUpdated event. This event fires each time layout occurs, which is typically as elements ae added to the visual tree. WHen this event fires inspect your TextBox.Text property to see if it is set.
This solved the problem for me :)
<TextBlock FontSize="16" FontWeight="Bold" Foreground="White" Margin="4,0,4,0" Text="{Binding CategoryName}" Loaded="TextBlock_Loaded" />
Loaded event in the inner Text block rather than the upper textblock because by the time this is loaded the upper text block's text is already bound so i can retrive the ID :)
I'm trying to create a user control that is a combobox that, when opened, presents a treeview of heirarchal data.
I created the user control and replaced a portion of the template in Popup with:
<ScrollViewer x:Name="ScrollViewer" BorderThickness="0" Padding="1">
<sdk:TreeView x:Name="Tree">
</sdk:TreeView>
</ScrollViewer>
However, I'm not sure how to enable binding on this. The treeview needs to be bound to a different datacontext than the combobox. I tried implementing a DependencyProperty on the user control that would allow me to set the datacontext, but I'm definitely not going about it the right way. At this point, all I get is an empty treeview.
Any help on this would be greatly appreciated.
P.S. One additional caveat is that I need to template the treeview like so:
<sdk:TreeView x:Name="Tree">
<sdk:TreeView.ItemTemplate>
<sdk:HierarchicalDataTemplate ItemsSource="{Binding ChildUnits}">
<StackPanel Orientation="Vertical" Width="200">
<TextBlock x:Name="name" TextWrapping="Wrap" Text="{Binding Name}" FontWeight="Bold" />
<TextBlock x:Name="type" Text="{Binding Id}" FontStyle="Italic" FontSize="10" Foreground="Gray" />
</StackPanel>
</sdk:HierarchicalDataTemplate>
</sdk:TreeView.ItemTemplate>
</sdk:TreeView>