private async void TakePictureButton_Click(object sender, RoutedEventArgs e)
{
MediaCapture capture = null;
try
{
capture = new MediaCapture();
await capture.InitializeAsync();
}
catch (TypeLoadException ex)
{
Log.WriteLine(ex.Message);
}
if (capture != null)
{
var preview = new PreviewImage(capture);
this.Picture.Source = preview;
await preview.StartAsync();
var outputFile = Utilities.AccountPictureFilePath();
TakePicture(capture, preview, outputFile, 3);
}
}
private async void TakePicture(MediaCapture capture, PreviewImage preview, string outputFile, int delay)
{
if (!File.Exists(outputFile))
{
File.Create(outputFile).Close();
}
StorageFile file = await StorageFile.GetFileFromPathAsync(outputFile);
ImageEncodingProperties imgFormat = ImageEncodingProperties.CreatePng();
new Thread(delegate()
{
Thread.CurrentThread.IsBackground = true;
Stopwatch stopwatch = Stopwatch.StartNew();
long millisecondsToWait = delay * 1000;
int i = delay;
while (true)
{
long now = stopwatch.ElapsedMilliseconds;
if (now >= millisecondsToWait)
{
// take photo in async
IAsyncAction action = capture.CapturePhotoToStorageFileAsync(imgFormat, file);
while (true)
{
if (action.Status == AsyncStatus.Completed || action.Status == AsyncStatus.Error)
{
break;
}
Thread.Sleep(1);
}
Dispatcher.Invoke(new Action(() => {
this.CountDown.Visibility = Visibility.Hidden;
Task _ = preview.StopAsync();
capture.Dispose();
if (action.Status == AsyncStatus.Completed)
{
this.PictureFile = file.Path;
}
else
{
DeletePicture();
}
LoadPicture();
ResetMessage();
ValidateField(this.Picture);
}));
break;
}
Dispatcher.Invoke(new Action(() => {
this.CountDown.Visibility = Visibility.Visible;
this.CountDown.Text = i.ToString();
}));
i--;
Thread.Sleep(1000);
}
}).Start();
}
