WPH304

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LINQ to SQL LINQ to User Data

LINQ Objects XML SQL User Data OData

Windows Phone Cloud service

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Database Support

Application Settings file App Creates/manages files and settings Application files App Data Folder Package Manager App Root Folder WP7 Isolated Storage APIs Install Database file Database file (r/o) Creates root folder sandboxed to App

Architecture.Call System.Linq.Queryable.Select(.Call System.Linq.Queryable.Where(.Constant(Table(Wines)), '(.Lambda #Lambda1)), '(.Lambda #Lambda2)).Lambda #Lambda1(db.Wines $w) { $w.Country == “USA" }.Lambda #Lambda2(w.Country $w) { $w.Name } var query = from w in db.Wines where w.Country == “USA" select w.Name; select Name from Wines where Country = “USA” Custom data context App objects Identity management Change tracking Update processing Object materialization Core ADO.NET (System.Data) SQLCE ADO.NET Provider (System.Data.SqlServerCe)

Design time Run time Database upgrade Varietals Wines Vineyards WineMakers

Database Creation: Example

Queries: Examples // Create the database form data context, using a connection string DataContext db = new WineDataContext("isostore:/wineDB.sdf"); // Find all wines currently at home, ordered by date acquired var q = from w in db.Wines where w.Varietal.Name == “Shiraz” && w.IsAtHome == true orderby w.DateAcquired select w;

NameLittle Penguin VarietalPinot Noir AtHome False NameLittle Penguin VarietalPinot Noir AtHome True NameLittle Penguin VarietalPinot Noir AtHome False Your app code NameYellow Tail VarietalPinot Noir AtHome True

Inserts/Updates/Deletes Wine newWine = new Wine { WineID = “1768", Name = “Windows Phone Syrah", Description = “Bold and spicy" }; db.Wines.InsertOnSubmit(newWine); db.SubmitChanges(); Wine wine = (from w in db.Wines where w.WineID == “1768" select w).First(); wine.Description = “Hints of plum and melon"; db.SubmitChanges(); Insert Update

Inserts/Updates/Deletes Delete var vineyardsToDelete = from Vineyards v in db.Vineyards where v.Country == “Australia” select v; db.Vineyards.DeleteAllOnSubmit (vineyardsToDelete); db.SubmitChanges(); Foreign key constraint will cause exception here if Wines associated with the Vineyards are not deleted first

Inserts/Updates/Deletes var vineyardsToDelete = from Vineyards v in db.Vineyards where v.Country == “Australia" select v; foreach (Vineyards v in vineyardsToDelete) { db.Wines.DeleteAllOnSubmit(v.Wines); } db.Vineyards.DeleteAllOnSubmit(vineyardsToDelete); db.SubmitChanges();

Database Schema Upgrades WineDataContext wineDC = new WineDataContext(App.WineDBConnectionString); DatabaseSchemaUpdater dsu = wineDC.CreateDatabaseSchemaUpdater(); if (dsu.DatabaseSchemaVersion == 1) { dsu.AddColumn ("BottleType"); dsu.DatabaseSchemaVersion = 2; dsu.Execute(); }

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User Data

AddressChooserTask private AddressChooserTask addressChooserTask; // Constructor public MainPage() { this.addressChooserTask = new AddressChooserTask(); this.addressChooserTask.Completed += new EventHandler ( addressChooserTask_Completed); } private void addressChooserTask_Completed(object sender, AddressResult e) { if (null == e.Error && TaskResult.OK == e.TaskResult) {... = e.DisplayName;... = e.Address; }

Contact name and picture Other contact dataAppointments/events Windows Live SocialYES Windows Live Rolodex (user created and SIM import) YES n/a Exchange accounts (corporate plus Google, etc.) YES Operator Address BooksYES n/a FacebookYESNO Other networks in the People Hub (e.g., Twitter) NO

Contacts: Hello, World! Contacts contacts = new Contacts(); contacts.SearchCompleted += new EventHandler ((sender, e) => {... = e.Results; }); // E.g. search for all contacts contacts.SearchAsync(string.Empty, FilterKind.None, null); filter expression (not a regex) Filter kind: name, , phone or pinned to start) state // E.g. search for all contacts with display name matching "ja" contacts.SearchAsync("ja", FilterKind.DisplayName, null);

Appointments: Hello, World! Appointments appointments = new Appointments(); appointments.SearchCompleted += new EventHandler ((sender, e) => {... = e.Results; }); // E.g. get next appointment (up to 1 week away) appointments.SearchAsync(DateTime.Now, DateTime.Now + TimeSpan.FromDays(7), 1, null); start date and time Maximum items to return state end date and time

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