Develop Reference

WPF listbox template horizontal with line break

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".

XAML Element Alignment issue

I have a list view that will contain notes that I input. I am having trouble figuring out how to have the list view item look how I want it to.
Below is how it should look:
And this is what it currently looks like:
How do I write the list view item in XAML so that the Date and time appear to the very top-right of each list view item, with the text of the note to the left?
<ListView x:Name="list" ItemsSource="{Binding Note}" BorderBrush="{x:Null}" BorderThickness="0">
<DataTemplate>
<ListViewItem>
<StackPanel Orientation="Horizontal">
</StackPanel>
</ListViewItem>
</DataTemplate>
</ListView>
Any help at all is much appreciated!

You are missing a number of elements required in order to get your screen to look the way you want.
You need to define the ItemTemplate for the ListView. You're on the right track here, it is a DataTemplate declared in XAML, you just have to apply it to the ListView.ItemTemplate property.
You need to set the HorizontalContentAlignment of the ListView to Stretch (the default is Left, which means your items will not fill the entire content area).
You need to use a DockPanel (or other similar panel) inside your DataTemplate to place your date content on the right, and the remainder of your content on the left.
You need to disable Horizontal Scrolling (ScrollViewer.HorizontalScrollBarVisbility) on the ListView in order to make your content wrap (otherwise it will just happily draw it all on one line).
I've included a sample ListView that should get you started.
<ListView
ItemsSource="{Binding Items}"
HorizontalContentAlignment="Stretch"
ScrollViewer.HorizontalScrollBarVisibility="Disabled">
<ListView.ItemTemplate>
<DataTemplate>
<DockPanel>
<TextBlock
TextWrapping="Wrap"
Text="{Binding Date}"
Background="Magenta"
DockPanel.Dock="Right" />
<TextBlock Text="{Binding Content}" Background="Lime" />
</DockPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>

Scroll Vertically inside ListView when ListView is VerticalAlignment="Stretch"

How do we get the ListView to behave properly? I am trying to scroll vertically inside my ListView, and I was eventually able to get something to scroll vertically, but the ListView keeps expanding in height! and setting MaxHeight doesn't do anything.
<StackPanel x:Name="ActivityLog" Margin="0, 201, 0, 0" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<ScrollViewer ScrollViewer.VerticalScrollBarVisibility="Visible">
<ListView x:Name="ActivityList" ItemsSource="{Binding Activities}" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" BorderBrush="{x:Null}" HorizontalContentAlignment="Center" FontSize="14">
<ListView.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Message}" Background="{x:Null}" HorizontalAlignment="Stretch" Padding="5" TextAlignment="Center" ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.CanContentScroll="True" />
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</ScrollViewer>
</StackPanel>
I am at a loss. Please help. How do I get the listview to just scroll vertically only, and never change in height, and never display the horizontal scrollbars?

Remove the StackPanel. That prevents the ListView (or any other children) to have a delimited size. That's why you're not getting any scrollbars, because the ListView has an infinite height, as layout-ed by the StackPanel.
Besides, having a StackPanel with only 1 child makes no sense. It's supposed to "stack" its children.
Edit: Also remove the ScrollViewer, as the ListView already has a ScrollViewer inside of it as per the default Template. Unless of course you had changed the Default ControlTemplate for that.

ScrollViewer in a listbox

I´m filling a listbox with a specific data, the code works fine, but I need to add a scrollviewer to the listbox because there are many elements inside, I tried to use a ScrolViewer and put inside the listbox, but doesn't work, here is the code
<StackPanel x:Name="Sites" Grid.Row="1" Orientation="Vertical">
<ListBox x:Name="ListSites" >
<ListBox.ItemTemplate>
<DataTemplate>
<Button Width="460" Height="120" Click="click" Name="btn">
<Button.Content>
<StackPanel Orientation="Vertical" Height="100" Width="460">
<TextBlock Width="460" Name="txtname" FontSize="22" Text="{Binding name}" Height="40" Foreground="CadetBlue" />
<TextBlock Width="460" Name="txtUrl" FontSize="22" Text="{Binding Url}" Height="60"/>
</StackPanel>
</Button.Content>
</Button>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>

I fixed it, simply adding the Height property in the ListBox control

If the ListBox is not given infinite space for height then it should automatically scroll when items overflow its boundaries. For instance, if the second Grid row outside your stackpanel has explicit or 'star' height set, the scrollbar in the listbox will show up automatically.
See also: Silverlight: Difficulty with ScrollViewer

You shouldn't need to add a ScrollViewer to your ListBox. It will start scrolling when it runs out of room.
However, because you've put the ListBox inside a StackPanel it won't ever think it's run out of room because the StackPanel grows infinitely in the direction of it's orientation to accommodate its contents.
You'll need to use a different container for your ListBox.

<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Vertical"/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>

Listbox extending off the page

I have a listbox inside of a stack panel inside of a border in a silverlight application and when ever I add anything to the listbox it increases in height so the scrollbar is never used and it extends beyond the boundaries of the border element. I have tried explicitly setting the height attribute of the listbox, the border and the stack panel and it still goes beyond this.
Here is my code:
<Border x:Name="articlePane">
<StackPanel>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Top">
<Button Content="Latest" MouseEnter="HandleRollInAnimation" MouseLeave="HandleRollOutAnimation" />
<Button Content="Pending" MouseEnter="HandleRollInAnimation" MouseLeave="HandleRollOutAnimation" />
<Button Content="Done" MouseEnter="HandleRollInAnimation" MouseLeave="HandleRollOutAnimation" />
</StackPanel>
<ListBox x:Name="articleList" Margin="5" Background="Transparent" ItemsSource="{Binding}"
ScrollViewer.VerticalScrollBarVisibility="Visible">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Vertical" VerticalAlignment="Top" HorizontalAlignment="Center">
<Image x:Name="articleImage" />
<TextBlock x:Name="articleTitle" Text="{Binding Path=Title}" FontSize="18" FontWeight="Bold"
Margin="5"/>
<TextBlock x:Name="articleDate" Text="{Binding Path=Date}" FontSize="14" Foreground="Gray"
Margin="5"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</Border>

I have a feeling that the StackPanel just keeps on adding height forever. I think in this instance you'd be better off with a Grid layout within your Border. Put the Button StackPanel in one height defined row, and the ListBox in an autosizing * height row. This way Grid will stick within the confines of your form.