/// <summary>
/// Retrieves / generates a QR code to be displayed to the user for sharing the shared secret and easy input
/// of this code by scanning with a specified size.
/// </summary>
/// <param name="label">The label to identify which account a key is associated with.</param>
/// <param name="secret">The shared secret.</param>
/// <param name="size">The desired size, in pixels (width and height equal), of the QR code.</param>
/// <returns>Returns an image encoded as data uri.</returns>
/// <see href="https://en.wikipedia.org/wiki/Data_URI_scheme"/>
/// <exception cref="ArgumentOutOfRangeException">Thrown when <paramref name="size"/> is less than 0</exception>
public string GetQrCodeImageAsDataUri(string label, string secret, int size)
{
if (size <= 0)
{
throw new ArgumentOutOfRangeException(nameof(size));
}
return("data:"
+ QrCodeProvider.GetMimeType()
+ ";base64,"
+ Convert.ToBase64String(QrCodeProvider.GetQrCodeImage(GetQrText(label, secret), size)));
}
/// <summary>
/// Retrieves / generates a QR code to be displayed to the user for sharing the shared secret and easy input
/// of this code by scanning with a specified size.
/// </summary>
/// <param name="label">The label to identify which account a key is associated with.</param>
/// <param name="secret">The shared secret.</param>
/// <param name="size">The desired size, in pixels (width and height equal), of the QR code.</param>
/// <returns>Returns an image encoded as data uri.</returns>
/// <see href="https://en.wikipedia.org/wiki/Data_URI_scheme"/>
/// <exception cref="ArgumentOutOfRangeException">Thrown when <paramref name="size"/> is less than 0</exception>
#pragma warning disable CA1055 // Uri return values should not be strings
public string GetQrCodeImageAsDataUri(string label, string secret, int size)
#pragma warning restore CA1055 // Uri return values should not be strings
{
if (size <= 0)
{
throw new ArgumentOutOfRangeException(nameof(size));
}
return("data:"
+ QrCodeProvider.GetMimeType()
+ ";base64,"
+ Convert.ToBase64String(QrCodeProvider.GetQrCodeImage(GetQrText(label, secret), size)));
}