Linking inside item list itemtemplate

Question

I have two separate problems with list binding with the itemtemplate element that contains texbox.

1) One list is attached to a list of strings. How can I display each line inside the created text fields and simultaneously allow two-way binding? Bilateral binding is not allowed without specifying a path or XPath.

<ListBox Height="231" HorizontalAlignment="Left" Margin="0,167,0,0" Name="listBoxKeys" VerticalAlignment="Top" Width="219" ItemsSource="{Binding Path=SelectedPlatform.Keys}" SelectedItem="{Binding Path=SelectedKey,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}">
         <ListBox.ItemTemplate>
              <DataTemplate>
                  <StackPanel Orientation="Horizontal" Margin="0,0,0,0">
                     <TextBox Text="{Binding Mode=OneWay}" Margin="0,0,0,0" Height="Auto" MinWidth="80" MaxWidth="80" HorizontalAlignment="Left" VerticalAlignment="Center"/>
                   </StackPanel>
               </DataTemplate>
          </ListBox.ItemTemplate>
 </ListBox>

And 2) I use another list that binds to some generic list of the custom KeyValuePair class. The itemmemplate element contains a text box and a combo box. The text of the text field is bound to the key property of each KeyValuePair object, and the combobox selecteditem to the value property. My problem is that I want the combo to be populated with the list of strings declared in my view model, which will change at runtime. The datacontext window is the viewmodel where the list is declared. I do not know the exact syntax that I need to use to bind combobox itemssource objects to them. Here is my code:

<ListBox Height="393" HorizontalAlignment="Left" Margin="0,72,0,0" Name="listBoxActions" VerticalAlignment="Top" Width="254" ItemsSource="{Binding Path=SelectedPlayer.ControlProfile.MappedActions}">
    <ListBox.ItemTemplate>
      <DataTemplate>
        <StackPanel Orientation="Horizontal" Margin="0,0,0,0">
          <TextBox Text="{Binding Key, Mode=TwoWay,UpdateSourceTrigger=LostFocus}" Margin="10,0,0,0" Height="Auto" MinWidth="80" MaxWidth="80" HorizontalAlignment="Left" VerticalAlignment="Center"/>
          <ComboBox Margin="10,0,0,0" Height="Auto" MinWidth="80" MaxWidth="80" HorizontalAlignment="Left" VerticalAlignment="Center" ItemsSource="{Binding ?}" SelectedItem="{Binding Value, Mode=TwoWay}"/>
         </StackPanel>
        </DataTemplate>
       </ListBox.ItemTemplate>
</ListBox>

Answer 1

, , , (), , , , , . .

( , ) Value :

<ListBox Height="231" HorizontalAlignment="Left" Margin="0,167,0,0" 
         Name="listBoxKeys" VerticalAlignment="Top" Width="219" 
         ItemsSource="{Binding Path=SelectedPlatform.KeyViewModels}" 
         SelectedItem="{Binding Path=SelectedKey,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}">
        <ListBox.ItemTemplate>
             <DataTemplate>
                 <StackPanel Orientation="Horizontal" Margin="0,0,0,0">
                    <TextBox Text="{Binding Value, Mode=TwoWay}" Margin="0,0,0,0" Height="Auto" MinWidth="80" MaxWidth="80" HorizontalAlignment="Left" VerticalAlignment="Center"/>
                  </StackPanel>
              </DataTemplate>
         </ListBox.ItemTemplate>
</ListBox>

Answer 2

1) , ,

2) DataContext ComboBox, , ViewModel. , , , - RelativeSource parent ItemsControl.

RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}

- :

<ListBox Height="393" HorizontalAlignment="Left" Margin="0,72,0,0" Name="listBoxActions" VerticalAlignment="Top" Width="254" ItemsSource="{Binding Path=SelectedPlayer.ControlProfile.MappedActions}">
    <ListBox.ItemTemplate>
      <DataTemplate>
        <StackPanel Orientation="Horizontal" Margin="0,0,0,0">
          <TextBox Text="{Binding Key, Mode=TwoWay,UpdateSourceTrigger=LostFocus}" Margin="10,0,0,0" Height="Auto" MinWidth="80" MaxWidth="80" HorizontalAlignment="Left" VerticalAlignment="Center"/>
          <ComboBox Margin="10,0,0,0" Height="Auto" MinWidth="80" MaxWidth="80" HorizontalAlignment="Left" VerticalAlignment="Center" ItemsSource="{Binding DataContext.Keys,  RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}" SelectedItem="{Binding Value, Mode=TwoWay}"/>
         </StackPanel>
        </DataTemplate>
       </ListBox.ItemTemplate>
</ListBox>