How to Highlight the result from context sensitive search in windows phone 7?

Question

I need to to Highlight the search result according to the text that is entered in the text box in windows phone 7,

Answer 1

I Did it with the help from this

Xaml code:

c# Code:

            private void contactFilterString_TextChanged(object sender, TextChangedEventArgs e)
    {
       // ContactListing();
        SearchVisualTree(ContactList);
        if (contactFilterString.Text == "")
        {
            ContactListing();
        }
    }

    private void SearchVisualTree(Action ContactListing)
    {
        SearchVisualTree(ContactList);
    }

    private void SearchVisualTree(DependencyObject targetElement)
    {

        var count = VisualTreeHelper.GetChildrenCount(targetElement);

        for (int i = 0; i < count; i++)
        {
            var child = VisualTreeHelper.GetChild(targetElement, i);
            if (child is TextBlock)
            {
                textBlock1 = (TextBlock)child;
                HighlightText();
                break;
            }
            else
            {
                //ContactListing();
                SearchVisualTree(child);
            }
        }
    }

    private void HighlightText()
    {
        if (textBlock1 != null)
        {
            string text = textBlock1.Text;
            textBlock1.Text = text;
            textBlock1.Inlines.Clear();

            int index = text.IndexOf(contactFilterString.Text);
            int lenth = contactFilterString.Text.Length;


            if (!(index < 0))
            {
                Run run = new Run() { Text = text.Substring(index, lenth), FontWeight = FontWeights.ExtraBold };
                run.Foreground = new SolidColorBrush(Colors.Orange);
                textBlock1.Inlines.Add(new Run() { Text = text.Substring(0, index), FontWeight = FontWeights.Normal });
                textBlock1.Inlines.Add(run);
                textBlock1.Inlines.Add(new Run() { Text = text.Substring(index + lenth), FontWeight = FontWeights.Normal });

                textBlock1.FontSize = 30;
                textBlock1.Foreground = new SolidColorBrush(Colors.Black);
            }
            else
            {
                //textBlock1.Text = "No Match";

            }
        }

    }

     /// 

    /// To List all the Contacts. . .
    /// 
    private void ContactListing()
    {
        ContactList.DataContext = null;
        Contacts cons = new Contacts();
        cons.SearchCompleted += new EventHandler(Contacts_SearchCompleted);
        cons.SearchAsync(contactFilterString.Text, FilterKind.DisplayName, "Contacts");
    }

    /// 

    /// To Fetch All Contacts from Mobile Contacts. . .
    /// 
    /// 
    /// 
    public void Contacts_SearchCompleted(object sender, ContactsSearchEventArgs e)
    {
        try
        {

            ContactList.DataContext = e.Results;

        }
        catch (Exception)
        {
            throw;
        }
    }

Thanks for the help!