3. 3

4. 4 private void loadButton_Click(object sender, RoutedEventArgs e) { string url = "http://twitter.com/statuses/user_timeline/" + nameTextBox.Text + ".xml"; client.DownloadStringAsync(new Uri(url)); }

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8. 8 NameAddressBank DetailsCustomer ID Rob18 Pussycat MewsNut East Bank123456 Jim10 Motor DriveBig Fall Bank654322 Ethel4 Funny AddressStrange bank111111

9. 9 Customer IDProduct IDOrder DateStatus 123456100121/10/2010Shipped 111111100210/10/2010Shipped 654322100301/09/2010On order Product IDProduct NameSupplierPrice 1001 Windows Phone 7 Microsoft200 1002Cheese grater Cheese Industries 2 1003Boat hook John’s Dockyard 20

10. 10

11. 11 SELECT * FROM Orders WHERE CustomerID = "123456"

12. 12 public class Customer { public string Name {get; set;} public string Address { get; set; } string BankDetails { get; set; } public int ID { get; set; } }

13. 13 List Customers = new List ();

14. 14 public List FindCustomerOrders(int CustomerID) { List result = new List (); foreach ( Order order in Orders ) { if (order.CustomerID == CustomerID) { result.Add(order); } } return result; }

15. 15

16. 16 var orderQueryResult = from order in db.Orders where order.CustomerID == "123456" select order;

17. 17 var orderQueryResult = from order in db.Orders where order.CustomerID == "123456" select order;

18. 18 var orderQueryResult = from order in db.Orders where order.CustomerID == "123456" select order;

19. 19 var orderQueryResult = from order in db.Orders where order.CustomerID == "123456" select order;

20. 20 var orderQueryResult = from order in db.Orders where order.CustomerID == "123456" select order;

21. 21

22. 22 Tue Oct 12 11:57:37 +0000 2010 Hello from Twitter. 2479801 Rob Miles http://s.twimg.com/a/1286/images/themes/theme1/bg.png

23. 23 XElement TwitterElement = XElement.Parse(twitterText);

24. 24

25. 25 public class TwitterPost { public string PostText { get; set; } public string DatePosted { get; set; } public string UserImage { get; set; } }

26. 26 var postList = from tweet in twitterElements.Descendants("status") select new TwitterPost { UserImage = tweet.Element("user"). Element("profile_image_url").Value, PostText = tweet.Element("text").Value, DatePosted = tweet.Element("created_at").Value };

27. 27 var postList = from tweet in twitterElements.Descendants("status") select new TwitterPost { UserImage = tweet.Element("user"). Element("profile_image_url").Value, PostText = tweet.Element("text").Value, DatePosted = tweet.Element("created_at").Value };

28. 28 var postList = from tweet in twitterElements.Descendants("status") select new TwitterPost { UserImage = tweet.Element("user"). Element("profile_image_url").Value, PostText = tweet.Element("text").Value, DatePosted = tweet.Element("created_at").Value };

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44. TwitterPost p1 = new TwitterPost { DatePosted = "Tue Oct 12 11:57:37 +0000 2010", UserImage = http://a3.twimg.com/1501/me2_normal.jpg", PostText = "This is a test post from Rob" }; TwitterPost p2 = new TwitterPost { DatePosted = "Wed Oct 13 14:21:04 +0000 2010", UserImage = http://a3.twimg.com/1501/me2_normal.jpg", PostText = "This is another test post from Rob" }; List posts = new List (); posts.Add(p1); posts.Add(p2); 44

45. TwitterPost p1 = new TwitterPost { DatePosted = "Tue Oct 12 11:57:37 +0000 2010", UserImage = http://a3.twimg.com/1501/me2_normal.jpg", PostText = "This is a test post from Rob" }; TwitterPost p2 = new TwitterPost { DatePosted = "Wed Oct 13 14:21:04 +0000 2010", UserImage = http://a3.twimg.com/1501/me2_normal.jpg", PostText = "This is another test post from Rob" }; List posts = new List (); posts.Add(p1); posts.Add(p2); 45

46. TwitterPost p1 = new TwitterPost { DatePosted = "Tue Oct 12 11:57:37 +0000 2010", UserImage = http://a3.twimg.com/1501/me2_normal.jpg", PostText = "This is a test post from Rob" }; TwitterPost p2 = new TwitterPost { DatePosted = "Wed Oct 13 14:21:04 +0000 2010", UserImage = http://a3.twimg.com/1501/me2_normal.jpg", PostText = "This is another test post from Rob" }; List posts = new List (); posts.Add(p1); posts.Add(p2); 46

47. 47 tweetsListBox.ItemsSource = posts;

48. 48 tweetsListBox.ItemsSource = postList;

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