Reputation: 2070
A listbox data template doesn't show and I cannot figure out why.
If I don't use a DataTemplate and copy the contents into the control section itself, it's fine.
I don't do very much binding in XAML, I usually do it all in code. What did I do wrong?
XAML
<UserControl x:Class="Cis.CustomControls.CisArrivalsPanel"
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="296" Width="876">
<UserControl.Resources>
<DataTemplate x:Key="DataTemplate">
<ListBoxItem>
<StackPanel>
<TextBlock Background="Blue" Text="{Binding Path=StationName}" />
<TextBlock Background="Brown" Text="{Binding Path=ArrivalPlatform}" />
</StackPanel>
</ListBoxItem>
</DataTemplate>
</UserControl.Resources>
<Grid>
<StackPanel Orientation="Horizontal">
<ListBox Width="487" Margin="0,66,0,33" ItemTemplate="{StaticResource DataTemplate}">
</ListBox>
</StackPanel>
</Grid>
</UserControl>
CS
public partial class CisArrivalsPanel : UserControl
{
public CisArrivalsPanel()
{
InitializeComponent();
this.DataContext = new ArrivalRowItem();
}
}
Model
public class ArrivalRowItem : INotifyPropertyChanged
{
public ArrivalRowItem()
{
this.StationName = "Lincoln";
this.ArrivalPlatform = "1";
}
private string _stationName;
public string StationName
{
get
{
return _stationName;
}
set
{
_stationName = value;
NotifyPropertyChanged("StationName");
}
}
private string _arrivalPlatform;
public string ArrivalPlatform
{
get
{
return _arrivalPlatform;
}
set
{
_arrivalPlatform = value;
NotifyPropertyChanged("ArrivalPlatform");
}
}
private DateTime _arrivalDateTime;
public DateTime ArrivalDateTime
{
get
{
return _arrivalDateTime;
}
set
{
_arrivalDateTime = value;
NotifyPropertyChanged("ArrivalDateTime");
}
}
public event PropertyChangedEventHandler PropertyChanged;
private void NotifyPropertyChanged(string property)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(property));
}
}
}
Upvotes: 2
Views: 50
Reputation: 61349
You have everything set up, but you don't actually have any data.
ListBox
, like other ItemsControl
s acts against a collection of data, and generates an instance of the template for each item it finds.
Given that you haven't set ItemsSource
or populated any collection I can see, you need to create a collection (probably an ObservableCollection
) and set the ItemsSource
to it via binding. Then add some items to it, and the ListBox
will display them!
Upvotes: 2