<ListBox Height="247" HorizontalAlignment="Left" Margin="116,79,0,0" Name="_lstBoxCities" VerticalAlignment="Top" Width="218" Background="#E8FFFFFF" ItemTemplate="{StaticResource cityListTemplate}"
                 ScrollViewer.HorizontalScrollBarVisibility="Auto"/>

<DataTemplate x:Key="cityListTemplate">
    <StackPanel Orientation="Horizontal">
        <TextBlock Text="{Binding idCity}" FontSize="12"/>
        <TextBlock Text="{Binding CityName}" Margin="6,0,0,0" FontSize="12"/>
    </StackPanel>
</DataTemplate>

<Grid Height="368" HorizontalAlignment="Left" Margin="500,34,0,0" Name="_Gridlist" VerticalAlignment="Top" Width="445" Visibility="Hidden">
    <Label Content="List of Cities" FontSize="25" FontWeight="Bold" Foreground="White" Height="50" HorizontalAlignment="Center" Margin="0,0,0,0" Name="_CitiesList" VerticalAlignment="Top" FontStretch="Normal" FontFamily="Magneto" />

    <ListBox Height="237" HorizontalAlignment="Left" Margin="131,120,0,0" Name="_lstBoxCities" VerticalAlignment="Top" Width="218" Background="#E8FFFFFF" ItemTemplate="{StaticResource cityListTemplate}"
                 ScrollViewer.HorizontalScrollBarVisibility="Auto"/>

...
</Grid>

<DataTemplate x:Key="cityListTemplate">
    <StackPanel Orientation="Horizontal">
        <TextBlock Text="{Binding idCity}" FontSize="12"/>
        <TextBlock Text="{Binding CityName}" Margin="6,0,0,0" FontSize="12"/>
    </StackPanel>
</DataTemplate>