public string ReadQrCode(byte[] content)
{
var bitmap = Image.Load(content);
var reader = new ZXing.ImageSharp.BarcodeReader <Rgba32>();
var result = reader.Decode(bitmap);
return(result?.Text ?? "");
}
public async Task <IActionResult> DecodeQrCode(IFormFile qrCodeInput, string returnUrl)
{
if (!qrCodeInput.IsImage())
{
return(await QrCodeError(returnUrl));
}
var vm = new ValidatePersonModel()
{
ReturnUrl = returnUrl
};
using (var bitmap = new System.Drawing.Bitmap(qrCodeInput.OpenReadStream()))
{
var image = BitmapResizer.Resize(bitmap, 600, 800);
var reader = new ZXing.ImageSharp.BarcodeReader <Rgba32>
{
Options = { PossibleFormats = new List <BarcodeFormat> {
BarcodeFormat.QR_CODE
} }
};
var result = reader.Decode(image);
if (result == null)
{
_logger.LogError("QR Code is invalid");
return(await QrCodeError(returnUrl));
}
var user = _userManager.FindByCodeAsync(result.Text);
if (user == null)
{
_logger.LogError("No user found for QR Code");
return(await QrCodeError(returnUrl));
}
vm.User = user;
}
return(View("ValidatePerson", vm));
}
public async Task <IActionResult> DecodeFiles(ICollection <IFormFile> files)
{
ViewData["TextAreaResult"] = "No result.";
foreach (var formFile in files)
{
if (formFile.Length > 0)
{
using (var stream = formFile.OpenReadStream())
{
try
{
using (var image = SixLabors.ImageSharp.Image.Load(stream))
{
var reader = new ZXing.ImageSharp.BarcodeReader <SixLabors.ImageSharp.Rgba32>();
var result = reader.Decode(image);
ViewData["TextAreaResult"] = "ImageSharp: " + result?.Text;
}
}
catch (Exception exc)
{
ViewData["TextAreaResult"] = "ImageSharp: " + exc.Message;
}
try
{
stream.Seek(0, SeekOrigin.Begin);
using (var openCVImage = OpenCvSharp.Mat.FromStream(stream, OpenCvSharp.ImreadModes.GrayScale))
{
var openCVReader = new ZXing.OpenCV.BarcodeReader();
var openCVResult = openCVReader.Decode(openCVImage);
ViewData["TextAreaResult"] = ViewData["TextAreaResult"] + "OpenCV: " + openCVResult?.Text;
}
}
catch (Exception exc)
{
ViewData["TextAreaResult"] = ViewData["TextAreaResult"] + "OpenCV: " + exc.Message;
}
try
{
stream.Seek(0, SeekOrigin.Begin);
using (var coreCompatImage = (System.Drawing.Bitmap)System.Drawing.Bitmap.FromStream(stream))
{
var coreCompatReader = new ZXing.CoreCompat.System.Drawing.BarcodeReader();
var coreCompatResult = coreCompatReader.Decode(coreCompatImage);
ViewData["TextAreaResult"] = ViewData["TextAreaResult"] + "CoreCompat.System.Drawing: " + coreCompatResult?.Text;
}
}
catch (Exception exc)
{
ViewData["TextAreaResult"] = ViewData["TextAreaResult"] + "CoreCompat.System.Drawing: " + exc.Message;
}
try
{
stream.Seek(0, SeekOrigin.Begin);
using (var magickImage = new ImageMagick.MagickImage(stream))
{
var magickReader = new ZXing.Magick.BarcodeReader();
var magickResult = magickReader.Decode(magickImage);
ViewData["TextAreaResult"] = ViewData["TextAreaResult"] + "Magick: " + magickResult?.Text;
}
}
catch (Exception exc)
{
ViewData["TextAreaResult"] = ViewData["TextAreaResult"] + "Magick: " + exc.Message;
}
try
{
stream.Seek(0, SeekOrigin.Begin);
using (var skiaImage = SkiaSharp.SKBitmap.Decode(stream))
{
var skiaReader = new ZXing.SkiaSharp.BarcodeReader();
var skiaResult = skiaReader.Decode(skiaImage);
ViewData["TextAreaResult"] = ViewData["TextAreaResult"] + "SkiaSharp: " + skiaResult?.Text;
}
}
catch (Exception exc)
{
ViewData["TextAreaResult"] = ViewData["TextAreaResult"] + "SkiaSharp: " + exc.Message;
}
}
}
}
ViewData["Message"] = "Your decoding page.";
return(View("Decode"));
}