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Binding parameter to a nested ListView using SelectedItem

I'm pretty new to coding in c# and I'm trying on a wpf app to transfer data between different folders.
To visualize the folders and subfolders I've got a tabcontrol with different mainfolders, and under each tab a ListView with information on the subfolders.
All data is gathered in a BindingList 'Klinieken', which is filled with objects 'Kliniek' (mainfolders) which contains objects 'Patient' (subfolders) which is filled with information about said folder. Here is the .xaml file for the mainwindow:
<Grid x:Name="LayoutRoot" Background="#555555">
<Grid.RowDefinitions>
<RowDefinition Height="420" />
<RowDefinition Height="116" />
</Grid.RowDefinitions>
<Grid x:Name="KliniekTabs" Background="#555555" Grid.Row="0" Margin="10 10 10 10">
<TabControl ItemsSource="{Binding Klinieken}"
SelectedItem="{Binding BronKliniek}"
TabStripPlacement="Top">
<TabControl.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding KliniekNaam}" />
</DataTemplate>
</TabControl.ItemTemplate>
<TabControl.ContentTemplate>
<DataTemplate>
<ListView ItemsSource="{Binding Path=Patienten}"
SelectedItem="{Binding Path=SelectedPatient}">
<ListView.Resources>
<Style TargetType="{x:Type GridViewColumnHeader}">
<Setter Property="HorizontalContentAlignment" Value="Left"/>
</Style>
</ListView.Resources>
<ListView.View>
<GridView>
<GridViewColumn Header="Patientnaam"
Width="250"
DisplayMemberBinding="{Binding PatientNaam}"/>
<GridViewColumn Header="Zisnr"
Width="250"
DisplayMemberBinding="{Binding PatientZis}"/>
<GridViewColumn Header="Aanmaakdatum"
Width="250"
DisplayMemberBinding="{Binding AanmaakDatum}"/>
</GridView>
</ListView.View>
</ListView>
</DataTemplate>
</TabControl.ContentTemplate>
</TabControl>
</Grid>
<Grid x:Name="WindowControls" Background="#777777" Grid.Row="1" Margin="100 5 100 10">
<StackPanel Orientation="Vertical">
<Label Margin="-80 0 0 0" HorizontalAlignment="Center">Doel kliniek</Label>
<ComboBox ItemsSource="{Binding Path=Klinieken}"
x:Name="doelKliniekDD"
SelectedItem="{Binding DoelKliniek}"
Margin="-120 0 0 0"
HorizontalAlignment="Center">
<ComboBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=KliniekNaam}"/>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>
<StackPanel Orientation="Horizontal" Margin="20 0 0 0" Height="50" VerticalAlignment="Bottom" HorizontalAlignment="Center">
<Button Height="25" Style="{StaticResource Button_Orange}" Command="{Binding TransferButtonCommand}" CommandParameter="{Binding ElementName=window, Mode=OneWay}" Margin="0 0 10 0">Transfer</Button>
<Button Height="25" Style="{StaticResource Button_Orange}" Command="{Binding CopyButtonCommand}" CommandParameter="{Binding ElementName=window, Mode=OneWay}" Margin="10 0 20 0">Kopieer</Button>
<Button Height="25" Style="{StaticResource Button_Grey}" Command="{Binding CloseCommand}" CommandParameter="{Binding ElementName=window, Mode=OneWay}" Margin="20 0 0 0">Cancel</Button>
</StackPanel>
</StackPanel>
</Grid>
</Grid>
And here is the MainViewModel that is referenced in the .xaml:
//attributen
string monacoDirectory;
List<string> aanwezigeClinics;
Installation installation;
//constructor
public MainViewModel()
{
monacoDirectory = ConfigurationManager.AppSettings["monacoDirectory"];
aanwezigeClinics = new List<string>(Directory.GetDirectories(monacoDirectory, "*", SearchOption.TopDirectoryOnly));
aanwezigeClinics.Remove(monacoDirectory + #"\defaults");
aanwezigeClinics.Remove(monacoDirectory + #"\physics");
installation = new Installation(aanwezigeClinics);
Klinieken = new BindingList<Kliniek>();
foreach (var kliniek in installation.Klinieken)
{
Klinieken.Add(kliniek);
}
}
private Kliniek _doelKliniek;
private Kliniek _bronKliniek;
private Patient _selectedPatient;
private BindingList<Kliniek> _klinieken = new BindingList<Kliniek>();
public BindingList<Kliniek> Klinieken
{
get { return _klinieken; }
set { _klinieken = value; }
}
public Kliniek DoelKliniek
{
get { return _doelKliniek; }
set
{
_doelKliniek = value;
OnPropertyChanged();
}
}
public Kliniek BronKliniek
{
get { return _bronKliniek; }
set
{
_bronKliniek = value;
OnPropertyChanged();
}
}
public Patient SelectedPatient
{
get { return _selectedPatient; }
set
{
_selectedPatient = value;
MessageBox.Show("hoi");
OnPropertyChanged();
}
}
The data shows up in the gui just fine, which i was quite happy with. And using SelectedItem on the TabControl and the ComboBox i use later worked out beautifully aswell, but I just cant seem to get the SelectedItem on the ListView to work. I have added a button to test the output of the fields and SelectedPatient always returns as null.
If i check the 'Live Visual Tree' in VS and go to the properties of the ListView i can see the Patient as SelectedItem, so that tells me its not a selection but a binding problem. Furthermore ive tried to google for nested bindings, but the suggestions there didnt change anything about my situation.
Is a nested binding like this possible, or should i take a whole different approach?

Had a similar problem quite a while ago. The suggestions below solved it for me at the time.
Use SelectedValue instead of SelectedItem. This is because SelectedItem doesn't change until the control has been validated. SelectedValue changes whenever the user selects an item. The code you could use is as follows:
SelectedValue="{Binding BronKliniek, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
For the button part, try to provide CommandParameter="{Binding}" instead of CommandParameter="{Binding ElementName=window, Mode=OneWay}". This way, you'll get the value of the current DataContext of the button, which you can then use to extract the data you want from this DataContext.

Tabcontrol with different pages (included in xaml or extern page) as tabcontent

Hello and thanks for reading and maybe helping :-)
My Code below with statements.
I have my MainWindow.xaml in which I have my CheckBox and TabControl.
<CheckBox Grid.Column="8" Grid.Row="2" Name="checkBoxCommon" HorizontalAlignment="Right" VerticalAlignment="Center" IsChecked="{Binding IsCheckedCommon}"/>
<Grid Grid.Column="0" Grid.ColumnSpan="10" Grid.Row="4">
<TabControl ItemsSource="{Binding Path=DpConfigCol>
<TabControl.ItemTemplate>
<DataTemplate>
<ContentControl Content="{Binding Path=DpConfigName}>
<ContentControl.Resources>
<DataTemplate DataType="types:ConfigCommon">
</DataTemplate>
<DataTemplate DataType="types:ConfigAdress">
</DataTemplate>
</ContentControl.Resources>
</ContentControl>
</DataTemplate>
</TabControl.ItemTemplate>
<TabControl.ContentTemplate>
<DataTemplate>
<ContentControl>
<ContentControl.Resources>
<DataTemplate DataType="types:ConfigCommon">
<TextBlock Text="hallo" Width="150"/>
</DataTemplate>
<DataTemplate DataType="types:ConfigAdress">
</DataTemplate>
</ContentControl.Resources>
</ContentControl>
</DataTemplate>
</TabControl.ContentTemplate>
</TabControl>
If I tick my checkbox it will add a new model to my ObservableCollection().
private bool _isCheckedCommon;
public bool IsCheckedCommon
{
get { return _isCheckedCommon; }
set
{
_isCheckedCommon = value;
if (_isCheckedCommon == true)
{
DpConfigCol.Add(new ConfigCommon("Common"));
}
else
{
foreach (object item in DpConfigCol)
{
if (item.GetType().ToString()==typeof(ConfigCommon).FullName.ToString())
{
DpConfigCol.Remove(item);
break;
}
}
}
return;
}
}
I made a binding to my tabcontrol with this Collection called DpConfigCol.
And now my question:
How do I make the properties (from my model: ConfigCommon) visible in my tabcontrol.ContentTemplate? If there are more than one checkbox with even more Models?
Is there a way to implement in that Tabcontrol.contentTemplate more than one Template for more than one model?

TLDR; (read only the title)
I also had to develop an app that used tabs once. You can use <Frame> inside your tabs and set its Content to what ever XAML page you want

Issue binding grouped data to cvs for semantic zoom

I'm having some trouble getting my semantic zoom bind correctly to my CollectionViewSource. I'm pretty new to MVVM, so I'm not sure i have stuff setup correctly.
View Model
private async void GetData()
{
// Simulate pulling data from api
string response;
StorageFile file = await StorageFile.GetFileFromApplicationUriAsync(new Uri(#"ms-appx:///DesignData/GetLive.json"));
using (StreamReader sRead = new StreamReader(await file.OpenStreamForReadAsync()))
response = await sRead.ReadToEndAsync();
// Deserialize data to class
LiveStreamModel liveGames = JsonConvert.DeserializeObject<LiveStreamModel>(response);
Schedules = liveGames.schedule;
// Group data by event
var groupData = liveGames.schedule.GroupBy(a => a.#event);
// Set cvs source to grouped data
ScheduleSource = new CollectionViewSource() { IsSourceGrouped = true, Source = groupData };
}
private CollectionViewSource scheduleSource;
public CollectionViewSource ScheduleSource
{
get
{
return scheduleSource;
}
set
{
scheduleSource = value;
RaisePropertyChanged("ScheduleSource");
}
}
View
Page.Resources>
<DataTemplate x:Key="ZoomedInTemplate">
<StackPanel Orientation="Horizontal" MinWidth="200" Margin="12,6,0,6">
<!--<Image Source="{Binding ImagePath}" Height="80" Width="80"/>-->
<StackPanel Margin="20,0,0,0">
<TextBlock Text="{Binding homeTeam}" Style="{StaticResource BaseTextBlockStyle}"/>
<TextBlock Text="{Binding awayTeam}" TextWrapping="Wrap" HorizontalAlignment="Left" Width="300"
Style="{StaticResource BodyTextBlockStyle}"/>
</StackPanel>
</StackPanel>
</DataTemplate>
<DataTemplate x:Key="ZoomedInGroupHeaderTemplate">
<TextBlock Text="{Binding event}" Foreground="{ThemeResource ApplicationForegroundThemeBrush}"
Style="{StaticResource SubtitleTextBlockStyle}"/>
</DataTemplate>
<DataTemplate x:Key="ZoomedOutTemplate">
<TextBlock Text="{Binding event}" Style="{StaticResource SubtitleTextBlockStyle}"/>
</DataTemplate>
</Page.Resources>
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<SemanticZoom x:Name="GetLiveZoom" >
<SemanticZoom.ZoomedInView>
<GridView x:Name="GetLiveGrid" ItemsSource="{Binding ScheduleSource.View}" ItemTemplate="{StaticResource ZoomedInTemplate}" SelectionMode="Single"
ScrollViewer.IsHorizontalScrollChainingEnabled="False">
<GridView.GroupStyle>
<GroupStyle HeaderTemplate="{StaticResource ZoomedInGroupHeaderTemplate}" />
</GridView.GroupStyle>
</GridView>
</SemanticZoom.ZoomedInView>
<SemanticZoom.ZoomedOutView>
<GridView x:Name="GetLiveList" ItemsSource="{Binding ScheduleSource.View.CollectionGroups}" ItemTemplate="{StaticResource ZoomedOutTemplate}" SelectionMode="None"
ScrollViewer.IsVerticalScrollChainingEnabled="False"/>
</SemanticZoom.ZoomedOutView>
</SemanticZoom>
</Grid>
When debugging, my data is getting grouped properly by #event, but setting the source of the cvs to the grouped data and binding that to the semantic zoom control results in nothing showing up.

You need to fix the following data binding:
1) For ZoomedInGroupHeaderTemplate, because the Source is grouped data, so if you want to show the group name in ZoomedInView, set data binding for Key property:
<DataTemplate x:Key="ZoomedInGroupHeaderTemplate">
<TextBlock Text="{Binding Key}" Foreground="{ThemeResource ApplicationForegroundThemeBrush}"
Style="{StaticResource SubtitleTextBlockStyle}"/>
</DataTemplate>
2) For ZoomedOutTemplate, the Source is ICollectionView.CollectionGroups, ref MSDN -> ICollectionViewGroup interface
We need to use ICollectionViewGroup.Group property to get group name in ZoomedOutView:
<DataTemplate x:Key="ZoomedOutTemplate">
<TextBlock Text="{Binding Group.Key}" Style="{StaticResource SubtitleTextBlockStyle}"/>
</DataTemplate>
Check my completed sample in Github
Screenshot for ZoomedInView:
Screenshot for ZoomedOutView:

Combo box add item from template

Im trying to add items to the combo box from the code behind to the item template but im getting null. This is what I have so far:
XAML:
<ListBox x:Name="lsbCiertoYFalsoInsideTemplate" Margin="40,0,0,0" ItemTemplate="{StaticResource CiertoYFalsoExcerciseDataTemplate}"/>
App.xaml:
<DataTemplate x:Key="CiertoYFalsoExcerciseDataTemplate">
<Grid>
<StackPanel x:Name="stckCiertoYFalsoInsideTemplate" Margin="0" Orientation="Vertical" Width="1100">
<StackPanel x:Name="stckPreguntasCiertoYFalso" Orientation="Horizontal">
<Grid Height="50" Width="65" DataContext="{Binding CustomValueList}" VerticalAlignment="Top">
<ComboBox x:Name="cbExercises" Style="{StaticResource SA_ComboBoxStyle}" ItemsSource="{Binding CustomOption}" BorderBrush="#CC8C8C8C" VerticalAlignment="Top">
</ComboBox>
</Grid>
<TextBlock HorizontalAlignment="Center" Margin="5,3,0,0" TextWrapping="Wrap" Text="{Binding QuestionNumber}" VerticalAlignment="Top" FontWeight="Bold" Foreground="Black" Width="26" FontFamily="{Binding FontFamily, Source={StaticResource TextBlockStyleManager}}" FontSize="{Binding FontSize, Source={StaticResource TextBlockStyleManager}}"/>
<TextBlock TextWrapping="Wrap" Text="{Binding Question}" Foreground="Black" VerticalAlignment="Top" FontSize="{Binding FontSize, Source={StaticResource TextBlockStyleManager}}" Margin="10,3,0,0" Width="968" FontFamily="{Binding FontFamily, Source={StaticResource TextBlockStyleManager}}"/>
</StackPanel>
</StackPanel>
</Grid>
</DataTemplate>
The error im getting is object out of range.
Code:
private void ComboBoxExercises()
{
ComboBox comboBox = new ComboBox();
ComboboxItem item = new ComboboxItem();
item.Text = "A";
comboBox = (ComboBox)lsbCiertoYFalsoInsideTemplate.FindName("cbExercises");
comboBox.SelectedIndex = 0;
comboBox.Items.Add(item);
}
public class ComboboxItem
{
public string Text { get; set; }
public override string ToString()
{
return Text;
}
}

There's a disconnect in what you're trying to do here. You've specified an ItemTemplate - which defines how each item in the list will look.
But then you're trying to get one single ComboBox back out via the FindName function. Which leads me to believe that you're really intending to set the Template, not the ItemTemplate.
That said, I think the error you're getting is because you're setting the SelectedIndex to 0 when the ComboBox has no items in it. You're telling it to select the first one, but there's nothing to select. You should add the item first, then select it.

wpf check list box

I m new to wpf.In order to get check list box functionality ,I have added below xaml to my code,but there is no output in my screen.only blank,what it could be?
<TabItem Header="Samples" >
<ListBox Margin="10" Width="373" Height="236">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="MyText"/>
<CheckBox IsChecked="False"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</TabItem>

just have a look at this basic sample
http://merill.net/2009/10/wpf-checked-listbox/

List box is a bit wired for such task..Have a look at ItemsControl.
Here is the code i use:
<ItemsControl
ItemsSource="{Binding ***}" IsTabStop="False">
<ItemsControl.ItemTemplate>
<DataTemplate>
<CheckBox
Content="{Binding Name}"
IsChecked="{Binding IsSelected}" />
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>

Replace your code with this
<TabItem Header="Roles" >
<ListBox Margin="10" Width="373" Height="236">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="MyText"/>
<CheckBox IsChecked="False"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
<ListBoxItem>Hi</ListBoxItem>
</ListBox>
</TabItem>
and tell us if it still shows blank

Better still, just use the new CheckListBox control in the Extended WPF Toolkit
http://wpftoolkit.codeplex.com/wikipage?title=CheckListBox&referringTitle=Home

This might help
1.Inorder to work datatemplate you must specify itemsource, here i have bounded a Stateslist a collection of items into it.
2.Also set the Datacontext to ViewModel or the CodeBehind as datacontext.
3.Datacontext will distribute the StateList properties collection to the listbox itemsource
using codebehind -
public Window1()
{
InitializeComponent();
this.DataContext = this;
LoadData();
}
using viewmodel
public Window1()
{
InitializeComponent();
DataContext = new Window1ViewModel();
LoadData();
}
//MyItemsource Property for listbox
private ObservableCollection<States> _stateslist;
public ObservableCollection<States> StatesList
{
get { return _stateslist; }
set
{
_stateslist = value;
RaisePropertyChanged(() => StatesList);
}
}
// Sample Data Loading
public void LoadData()
{
StatesList = new ObservableCollection<States>();
StatesList.Add(new States
{
StateName = "Kerala"
});
StatesList.Add(new States
{
StateName = "Karnataka"
});
StatesList.Add(new States
{
StateName = "Goa"
});
}
Window1.Xaml
<ListBox ItemsSource="{Binding StatesList}" >
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<CheckBox IsChecked="{Binding IsSelected"} Content="{Binding StateName}" />
<TextBox Text="{Binding TextBoxValue}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>

Check this out it isworking..you are using TabItem but you didnt define it in TabControl
<TabControl>
<TabItem Header="Tab1">
<ListBox Margin="10" Width="373" Height="236">
<ListBox.Items>
<StackPanel Orientation="Horizontal">
<TextBlock Text="MyText"/>
<CheckBox IsChecked="False"/>
</StackPanel>
</ListBox.Items>
</ListBox>
</TabItem>
</TabControl>
If you are new in WPF use XamlPadX it will give you great help to practice out on it..