Can't access textbox in datacontext in hubsection from code behind

Question

 am making a windows phone 8.1 application, i am using hub section template and in that i have a textbox, i want to access its value on an event. I can't find a way to do so, i am not using any binding.

 Here is XAML

<HubSection x:Uid="HubSection4" Header="SEARCH PACKAGE" DataContext="{Binding Groups[2]}" HeaderTemplate="{ThemeResource HubSectionHeaderTemplate}">

                <DataTemplate>

                    <TextBox x:Name="searchBox" IsSpellCheckEnabled="True"  KeyDown="AnyKeyDown"/>
                </DataTemplate>     
  
</HubSection>

Here is code:

 

 private async void AnyKeyDown(object sender, KeyRoutedEventArgs e)
        {

            if (e.Key == Windows.System.VirtualKey.Enter)
            {
                //call the magic function
                var messageDialog = new MessageDialog(searchBox.data);
                // Show the message dialog
                await messageDialog.ShowAsync();

            }
           


          }

Answer 1

If you want to access the TextBox in the AnyKeyDown event handler you could just cast the sender object:

private async void AnyKeyDown(object sender, KeyRoutedEventArgs e)
        {
            TextBox searchBox = sender as TextBox;
            if (e.Key == Windows.System.VirtualKey.Enter)
            {
                //call the magic function
                var messageDialog = new MessageDialog(searchBox.Text);
                // Show the message dialog
                await messageDialog.ShowAsync();

            }
        }

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Answer 2

Thanks, it works now :)