发送内存流，其中包含捕获图像到parse.com按钮单击

Question

我正在尝试捕获图像，然后在图像上发送到parse.com，包括其他对象值。 要使它短暂，我一旦我捕获图像，就会将图像发送到Parse.com。它正在工作，但不是我想要的。我想保存内存流，然后使用已保存的流在Parse.com上发送按钮，单击其他对象变量。

这是我捕获图像并将其发送到parse.com的代码

  private async void cameraCapture_Completed(object sender, PhotoResult e)
    {
        if (e.TaskResult != TaskResult.OK) return;

        var capturedPhoto = new BitmapImage();
        capturedPhoto.SetSource(e.ChosenPhoto);
        ImgView.Source = capturedPhoto;

        PictureFileName = today.ToString();
        {
            using (var memoryStream = new MemoryStream())
            {
                // Get a stream of the captured photo
                var writableBitmap = new WriteableBitmap(capturedPhoto);
                writableBitmap.SaveJpeg(memoryStream, capturedPhoto.PixelWidth, capturedPhoto.PixelHeight, 0, 100);

                PhotoResult photoResult = e as PhotoResult;

                photoResult.ChosenPhoto.CopyTo(memoryStream);

                memoryStream.Position = 0; // Rewind the stream

                byte[] myPicArray = memoryStream.ToArray();

                ParseFile ImageFile = new ParseFile(PictureFileName, myPicArray);
                await ImageFile.SaveAsync();


                var image = new ParseObject("ImageUpload");
                image["photo"] = ImageFile;
                image["description"] = TextBox.Text;

                await image.SaveAsync();
            }
        }
    }

.

这是我的按钮单击代码，我要在拍摄时发送该映像，而不是在捕获后直接发送它。如果可能，我想保存图像流，然后将其发送到parse.com上按钮单击。

private async void Btn_Click(object sender, RoutedEventArgs e)
    {
        var image = new ParseObject("ImageUpload");
        image["photo"] = imageFile; //how to bring that memory stream here ???
        image["description"] = TxtBox.Text;

        await image.SaveAsync();
    }

.

Answer 1

private void cameraCapture_Completed(object sender, PhotoResult e)
    {

        if (e.TaskResult != TaskResult.OK) return;

        var capturedPhoto = new BitmapImage();
        capturedPhoto.SetSource(e.ChosenPhoto);
        ImgView.Source = capturedPhoto;

        FileName = today.ToString();


        {
            using (var memoryStream = new MemoryStream())
            {
                // Get a stream of the captured photo
                var writableBitmap = new WriteableBitmap(capturedPhoto);
                writableBitmap.SaveJpeg(memoryStream, capturedPhoto.PixelWidth, capturedPhoto.PixelHeight, 0, 50);

                PhotoResult photoResult = e as PhotoResult;

                photoResult.ChosenPhoto.CopyTo(memoryStream);

                memoryStream.Position = 0; // Rewind the stream

                myPic = memoryStream.ToArray(); //  byte[] myPic; has been decleared in inital
            }
        }
    }

.

在按钮上单击

private async void BtnPost_Click(object sender, RoutedEventArgs e)
    {

        ParseFile ImageFile = new ParseFile(FileName, myPic);
        await ImageFile.SaveAsync();

        var imageUpload = new ParseObject("ImageUpload ");
        imageUpload["photo"] = ImageFile;

        await imageUpload.SaveAsync();

    }

.