datatemplate listbox selected item - wpf

Question

here's my xaml:
<Window x:Class="WpfTest.Search"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Search" Height="600" Width="1024">
<Window.Resources>
<DataTemplate x:Key="listBoxTemplate" xmlns:ns="clr-namespace:MyConverters">
<StackPanel Orientation="Horizontal">
<StackPanel.Resources>
<ns:ImageConverter x:Key="MyImageConverter" />
</StackPanel.Resources>
<Image Source="{Binding Path=thumb, StringFormat=/WpfTest;component/Images/{0}, Converter={StaticResource MyImageConverter}}" Height="100" Width="130" Margin="5"></Image>
<StackPanel Orientation="Vertical" Width="247">
<TextBlock Text="{Binding recipeName}" Height="60" Padding="15" FontSize="16" HorizontalAlignment="Stretch" VerticalAlignment="Center"></TextBlock>
<TextBlock Text="{Binding cuisine}" Height="60" Padding="15" FontSize="16" HorizontalAlignment="Stretch" VerticalAlignment="Center"></TextBlock>
</StackPanel>
</StackPanel>
</DataTemplate>
</Window.Resources>
<Grid>
<ListBox Margin="12,96,0,0" Name="lstSearchResult" HorizontalAlignment="Left"
VerticalAlignment="Top" Width="704" Height="445" ItemsSource="{Binding Tables[0]}" ItemTemplate="{StaticResource listBoxTemplate}" SelectionChanged="lstSearchResult_SelectionChanged">
</ListBox>
<TextBox Height="31" HorizontalAlignment="Left" Margin="12,49,0,0" Name="txtSearchRecipe" VerticalAlignment="Top" Width="518" FontSize="16" />
<Button Content="Search" Height="31" HorizontalAlignment="Left" Margin="555,49,0,0" Name="btnSearchRecipe" VerticalAlignment="Top" Width="161" Click="btnSearchRecipe_Click" />
</Grid>
</Window>
now i want to open a new form based on the item I clicked on the listbox, passing the new form the data from the selected item's textblock. how do i do that?

Answer 1

If I'm reading this correctly you don't need to do anything special to access the TextBlock controls in the DataTemplate. You just need to take advantage of your bindings by adding a SelectedItem binding using TwoWay binding to your ListBox.
If you're using MVVM, I would suggest you map a Command on your button click event to your View Model passing the SelectedItem as the command parameter. Then, in the command handler, cast the SelectedItem to the type you expect (this should be the type of object in the collection you've bound to your ListBox ItemsSource). You can then send the properties bound to the TextBlocks to the view model of your new window. If setup propertly these items should exist in your SelectedItem. Then set the window's DataContext to the corresponding window viewmodel and show it.
If you're just using code behind, simply cast the SelectedItem to the type used in the ListBox ItemsSource collection. Then pass the properties bound to the TextBlocks to the new window. Then show the window.