Getting a concrete event from WP7 calendar - windows-phone-7

Question

I'm working on a WP7 application and I need it to play the song in the first link if the current event on the calendar is "Meeting". However, with the current code, it plays the second song instead if the first one even though the event is set correctly.
Here is my code:
public partial class MainPage : PhoneApplicationPage
{
// Constructor
public MainPage()
{
InitializeComponent();
// Set the data context of the listbox control to the sample data
DataContext = App.ViewModel;
this.Loaded += new RoutedEventHandler(MainPage_Loaded);
}
// Load data for the ViewModel Items
private void MainPage_Loaded(object sender, RoutedEventArgs e)
{
if (!App.ViewModel.IsDataLoaded)
{
App.ViewModel.LoadData();
}
}
private void button1_Click(object sender, RoutedEventArgs e)
{
Appointments appts = new Appointments();
//Identify the method that runs after the asynchronous search completes.
appts.SearchCompleted += new EventHandler<AppointmentsSearchEventArgs>(Appointments_SearchCompleted);
DateTime start = DateTime.Now;
DateTime end = DateTime.Now;
int max = 1;
//Start the asynchronous search.
appts.SearchAsync(start, end, max, "Appointments Test #1");
textBlock3.Text = DateTime.Now.ToString("hh:mm:ss tt");
}
void Appointments_SearchCompleted(object sender, AppointmentsSearchEventArgs e)
{
try
{
AppointmentResultsDataLINQ.DataContext =
from Appointment appt in e.Results
where appt.IsAllDayEvent == false
select appt;
}
catch (System.Exception)
{
}
}
private void button2_Click(object sender, RoutedEventArgs e)
{
if ((AppointmentResultsDataLINQ.DataContext).Equals("Meeting"))
{
mediaElement1.Source = new Uri("http://www.opendrive.com/files/NV8zNTMwNDYwX2hxRXZR/Crystallize.mp3", UriKind.Absolute);
}
else
{
mediaElement1.Source = new Uri("https://www.opendrive.com/files/NV8zMjAxODY0X0VBNDJY/Hetken%20tie%20on%20kevyt%20(piano%20cover)%20-%20YouTube.mp3", UriKind.Absolute);
}
mediaElement1.Play();
}
}

Answer 1

The problem appears to be this line:
if ((AppointmentResultsDataLINQ.DataContext).Equals("Meeting"))
You're comparing the result of calling the ToString() method on the Appointment instance with the string "Meeting".
You probably want:
if ((AppointmentResultsDataLINQ.DataContext as Appointment).Subject.Equals("Meeting"))
Update
You're actually checking an Enumerable of Appointments.
Here's how to check if any of them are "Meeting":
if ((AppointmentResultsDataLINQ.DataContext as IEnumerable<Appointment>).Any(app => app.Subject.Equals("Meeting")))