Visual Studio Tools for Office 2008 Ribbon Designer with XLINQ for Yahoo

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Xml.Linq;

namespace WordAddIn1
{
    /// <summary>
    /// Interaction logic for UserControl2.xaml
    /// </summary>
    public partial class ImageSearchWpfUserControl : UserControl
    {
        int startVal = 1;

        public ImageSearchWpfUserControl()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            //Make url for search, with paging support
            string uri = "http://search.yahooapis.com/ImageSearchService/V1/imageSearch?appid=" + Properties.Settings.Default.AppId + "&results=20&query=" + textBox1.Text;
            if((sender as Control).Name.Equals("buttonForward"))
            {
                startVal += 20;
                uri += "&start=" + startVal;
            }
            else if ((sender as Control).Name.Equals("buttonBack"))
            {
                startVal -= 20;
                uri += "&start=" + startVal;
            }
            else
                startVal = 1;

            //Load the result as XDocument
            var xraw = XDocument.Load(uri);
            //Populate array
            var imageArray = from image in xraw.Elements().First().Elements()
                         select new YahooImage
                         {
                             Title = image.Element("{urn:yahoo:srchmi}Title").Value,
                             LargeUrl = image.Element("{urn:yahoo:srchmi}ClickUrl").Value,
                             Thumbnail = image.Element("{urn:yahoo:srchmi}Thumbnail").Element("{urn:yahoo:srchmi}Url").Value,
                             ThumbHeight = int.Parse(image.Element("{urn:yahoo:srchmi}Thumbnail").Element("{urn:yahoo:srchmi}Height").Value),
                             ThumbWidth = int.Parse(image.Element("{urn:yahoo:srchmi}Thumbnail").Element("{urn:yahoo:srchmi}Width").Value),
                             Summary = image.Element("{urn:yahoo:srchmi}Summary").Value
                         };
            //Clear old results
            stackPanel1.Children.Clear();
            foreach (var im in imageArray)
            {
                //Show image on button
                Image image = new Image();
                ImageSourceConverter isc = new ImageSourceConverter();
                image.Source = (ImageSource)isc.ConvertFromString(im.Thumbnail);

                Button b = new Button();
                b.Content = image;
                b.Width = im.ThumbWidth;
                b.Height = im.ThumbHeight;
                b.Tag = im.LargeUrl;
                b.ToolTip = im.Title + "\n\n" + im.Summary;

                b.Click += delegate(object clicked_button, RoutedEventArgs evt_args)
                    {
                        Object missing = System.Reflection.Missing.Value;
                        //On click, add image to word document
                        try
                        {
                            Globals.ThisAddIn.Application.Selection.InlineShapes.AddPicture(
                                (clicked_button as Button).Tag.ToString(), ref missing, ref missing, ref missing);
                        }
                        catch (Exception ex)
                        {
                            MessageBox.Show(ex.Message, ex.GetType().Name);
                            Globals.ThisAddIn.CustomTaskPanes.RemoveAt(0);
                        }
                    };
                stackPanel1.Children.Add(b);
            }
            //Choose paging buttons to display
            if (imageArray.Count() < 20)
                buttonForward.Visibility = Visibility.Collapsed;
            else
                buttonForward.Visibility = Visibility.Visible;
            if (startVal > 1)
                buttonBack.Visibility = Visibility.Visible;
            else
                buttonBack.Visibility = Visibility.Collapsed;

        }

    }
}