diff options
Diffstat (limited to 'Xamarin.Forms.Platform.WinRT/TaskExtensions.cs')
-rw-r--r-- | Xamarin.Forms.Platform.WinRT/TaskExtensions.cs | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.WinRT/TaskExtensions.cs b/Xamarin.Forms.Platform.WinRT/TaskExtensions.cs new file mode 100644 index 00000000..332e8a64 --- /dev/null +++ b/Xamarin.Forms.Platform.WinRT/TaskExtensions.cs @@ -0,0 +1,40 @@ +using System; +using System.Threading; +using System.Threading.Tasks; +using Windows.Foundation; + +#if WINDOWS_UWP + +namespace Xamarin.Forms.Platform.UWP +#else + +namespace Xamarin.Forms.Platform.WinRT +#endif +{ + internal static class TaskExtensions + { + public static void WatchForError(this IAsyncAction self) + { + self.AsTask().WatchForError(); + } + + public static void WatchForError<T>(this IAsyncOperation<T> self) + { + self.AsTask().WatchForError(); + } + + public static void WatchForError(this Task self) + { + SynchronizationContext context = SynchronizationContext.Current; + if (context == null) + return; + + self.ContinueWith(t => + { + Exception exception = t.Exception.InnerExceptions.Count > 1 ? t.Exception : t.Exception.InnerException; + + context.Post(e => { throw (Exception)e; }, exception); + }, CancellationToken.None, TaskContinuationOptions.OnlyOnFaulted, TaskScheduler.Default); + } + } +}
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