我正在开发一个 WP7 应用程序，如果日历上的当前事件是“会议”，我需要它来播放第一个链接中的歌曲。但是，使用当前代码，即使事件设置正确，它也会播放第二首歌曲而不是第一首歌曲。
这是我的代码：
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();
}
}