protected void SendErrors()
{
// Check for errors (do nothing when none)
var errorFiles = LocalErrorStore.List();
if (errorFiles == null || errorFiles.Length == 0)
{
return;
}
// Report all errors
foreach (var errorFile in errorFiles)
{
// Get next error
var error = LocalErrorStore.Get(errorFile);
// Post error to service
using var client = new HttpClient();
using var buffer = new MemoryStream();
var serializer = new DataContractJsonSerializer(typeof(ErrorReportData[]));
serializer.WriteObject(buffer, error);
var json = Encoding.UTF8.GetString(buffer.ToArray(), 0, (int)buffer.Length);
using var content = new StringContent(json, Encoding.UTF8, "application/json");
using var response = client.PostAsync(ErrorReportUri, content).Result;
if (response.IsSuccessStatusCode || response.StatusCode == HttpStatusCode.BadRequest)
{
// Remove when successful or invalid data
LocalErrorStore.Remove(errorFile);
}
}
}
protected void OnSuspending(object sender, SuspendingEventArgs @event)
{
// Validate.
if (@event is null)
{
throw new ArgumentNullException(nameof(@event));
}
// Delay
var deferral = @event.SuspendingOperation.GetDeferral();
try
{
// Save state
SaveState();
}
catch (Exception error)
{
// Log error saving state then continue
LocalErrorStore.Add(error);
}
finally
{
// End delay
deferral.Complete();
}
}
protected static void OnError(object sender, Windows.UI.Xaml.UnhandledExceptionEventArgs @event)
{
// Validate.
if (@event is null)
{
throw new ArgumentNullException(nameof(@event));
}
// Store error to send later
LocalErrorStore.Add(@event.Exception);
}
public async void CheckErrors()
{
// Check for errors (do nothing when none)
var errors = LocalErrorStore.List();
if (errors == null || errors.Length == 0)
{
return;
}
// Prompt user
await ShowSendErrorsDialog().ConfigureAwait(false);
}
protected void OnResuming(object sender, object @event)
{
try
{
// Load state
LoadState();
}
catch (Exception error)
{
// Log error restoring state then create new model
LocalErrorStore.Add(error);
}
}
protected static void DiscardErrors()
{
// Check for errors (do nothing when none)
var errors = LocalErrorStore.List();
if (errors == null)
{
return;
}
// Delete all errors
foreach (var errorFileName in errors)
{
LocalErrorStore.Remove(errorFileName);
}
}
/// <summary>
/// Logs unhandled errors.
/// </summary>
protected static void OnError(object sender, Windows.UI.Xaml.UnhandledExceptionEventArgs @event)
{
// Store error to send later
LocalErrorStore.Add(@event.Exception);
}
