How to do MediaCapture in UWP application but not store in local machine - camera

Question

I am developing an UWP application with a camera feature, I have studied this sets of codes,
https://github.com/Microsoft/Windows-universal-samples/tree/master/Samples/CameraStarterKit
And successfully developed a camera feature on my application. However, in my application, I wish to not store the picture into my local machine as the application is actually like a kiosk system whereby everyone will be using the same machine to take the picture.
What I am planning to do is actually to allow users to send the picture that they have taken to their own email address via the kiosk system. When they have taken a photo, a preview will be shown, and only if the user want to send the picture, then will the picture be "save"
The codes for my take photo function is something like this:
rivate async Task TakePhotoAsync()
{
var stream = new InMemoryRandomAccessStream();
Debug.WriteLine("Taking photo...");
await _mediaCapture.CapturePhotoToStreamAsync(ImageEncodingProperties.CreateJpeg(), stream);
try
{
var file = await _captureFolder.CreateFileAsync("SimplePhoto.jpg", CreationCollisionOption.GenerateUniqueName);
Debug.WriteLine("Photo taken! Saving to " + file.Path);
var photoOrientation = CameraRotationHelper.ConvertSimpleOrientationToPhotoOrientation(_rotationHelper.GetCameraCaptureOrientation());
await ReencodeAndSavePhotoAsync(stream, file, photoOrientation);
Debug.WriteLine("Photo saved!");
}
catch (Exception ex)
{
// File I/O errors are reported as exceptions
Debug.WriteLine("Exception when taking a photo: " + ex.ToString());
}
}
And to get the preview of the picture will be:
private async Task GetPreviewFrameAsSoftwareBitmapAsync()
{
// Get information about the preview
var previewProperties = _mediaCapture.VideoDeviceController.GetMediaStreamProperties(MediaStreamType.VideoPreview) as VideoEncodingProperties;
// Create the video frame to request a SoftwareBitmap preview frame
var videoFrame = new VideoFrame(BitmapPixelFormat.Bgra8, (int)previewProperties.Width, (int)previewProperties.Height);
// Capture the preview frame
using (var currentFrame = await _mediaCapture.GetPreviewFrameAsync(videoFrame))
{
// Collect the resulting frame
SoftwareBitmap previewFrame = currentFrame.SoftwareBitmap;
// Show the frame information
FrameInfoTextBlock.Text = String.Format("{0}x{1} {2}", previewFrame.PixelWidth, previewFrame.PixelHeight, previewFrame.BitmapPixelFormat);
// Create a SoftwareBitmapSource to display the SoftwareBitmap to the user
var sbSource = new SoftwareBitmapSource();
await sbSource.SetBitmapAsync(previewFrame);
// Display it in the Image control
PreviewFrameImage.Source = sbSource;
}
}

Answer 1

There are (at least) two ways:
1) "Better" one:
Create a backend that sends email using SmtpClient
Post your image from UWP to backend using HttpClient
2) "Easier" one: launch Mail app
The downside is that users will be able to edit the message, receiver and things like that.
Also you can try to use SmtpClient directly from UWP client (may be now with .Net Standard 2.0 it would be possible but I guess no one yet tried) or third-party open-source replacement (which might be a bit outdated as it was created for Windows 8) or even try to launch your backend as Windows Service on the client machine.