Upload Images to Azure Blob Storage

ImageSelectionPage.xaml.cs

private async void UploadImagesButton_Clicked(object sender, EventArgs e)
{
    // Get the list of images we have selected.
    List<string> imagePaths = ImgCarouselView.ItemsSource as List<string>;

    // If user is using Android, compress the images. (Optional)
    if (Device.RuntimePlatform == Device.Android)
    {
        imagePaths = CompressAllImages(imagePaths);
    }

    // Retrieve storage account from connection string.
    CloudStorageAccount storageAccount = CloudStorageAccount.Parse("DefaultEndpointsProtocol=https;AccountName=your_account_name_here;AccountKey=your_account_key_here");

    // Create the blob client.
    CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();

    // Retrieve reference to a previously created container.
    CloudBlobContainer container = blobClient.GetContainerReference("multiimagepickercontainer");

    // Create the container if it doesn't already exist.
    await container.CreateIfNotExistsAsync();

    // Set the container access permissions (Optional)
    BlobContainerPermissions blobPermissions = new BlobContainerPermissions();
    blobPermissions.PublicAccess = BlobContainerPublicAccessType.Blob;
    await container.SetPermissionsAsync(blobPermissions);

    // Change info text. (Optional)
    InfoText.Text = "Uploading to Azure Blob Storage...";

    // Upload all the selected images to Azure Blob Storage.
    int count = 1;
    foreach (string img in imagePaths)
    {
        // Retrieve reference to a blob named "newphoto#.jpg".
        CloudBlockBlob blockBlob = container.GetBlockBlobReference("newphoto" + count + ".jpg");

        // Create the "newphoto#.jpg" blob with the current image in our list.
        await blockBlob.UploadFromFileAsync(img);

        count++;
    }

    // Change info text. (Optional)
    InfoText.Text = "Upload complete.";

    // Clear temp files after upload.
    if (Device.RuntimePlatform == Device.Android)
    {
        DependencyService.Get<IMediaService>().ClearFileDirectory();
    }
    if (Device.RuntimePlatform == Device.iOS)
    {
        GMMultiImagePicker.Current.ClearFileDirectory();
    }
}