Code for blog post on DeveloperForce.WindowsPhone.Login NuGet accelerator

accountspage.cs

NavigationService.Navigate(new Uri("/Pages/AccountsPage.xaml", UriKind.Relative));

OnNavigatedTo.cs

var uri =
  Common.FormatAuthUrl(
      AuthorizationEndpointUrl,
      ResponseTypes.Token,
      ConsumerKey,
      CallbackUrl,
      DisplayTypes.Touch);

WebBrowser.Navigate(new Uri(uri, UriKind.Absolute));

PhoneApplicationPage_Loaded.cs

var app = (Application.Current as App);

if (app != null)
{
    if ((!string.IsNullOrEmpty(app.InstanceUrl)) & (!string.IsNullOrEmpty(app.AccessToken)))
    {
        var client = new ForceClient(app.InstanceUrl, app.AccessToken, "v29.0");
        var accounts = await client.QueryAsync<Account>("SELECT id, name, description FROM Account");

        AccountsList.ItemsSource = accounts.records;
    }
}

properties.cs

public string AccessToken { get; set; }
public string RefreshToken { get; set; }
public string InstanceUrl { get; set; }

WebBrowser

<phone:WebBrowser x:Name="WebBrowser" Navigating="WebBrowser_Navigating" />

WebBrowser_Navigating.cs

var app = (Application.Current as App);
var returnUri = System.Net.HttpUtility.UrlDecode(e.Uri.ToString());

if (returnUri.StartsWith("sfdc://success"))
{
    e.Cancel = true;

    var querystring = returnUri.Substring(returnUri.IndexOf("#") + 1);
    var split = querystring.Split('&');

    if (app != null)
    {
        app.AccessToken = split[0].Split('=')[1];
        app.RefreshToken = split[1].Split('=')[1];
        app.InstanceUrl = split[2].Split('=')[1];
    }

    NavigationService.Navigate(new Uri("MainPage.xaml", UriKind.Relative));
}