Note that even if you specify a smaller version, if the data does not fit, it will automatically be the minimum version that fits the data. The minimum value of version is 1, and the maximum is 40.īy specifying version, you can generate a QR code image larger than the optimal version (minimum size), so it is useful when you want to create multiple QR codes with different data contents with the same size. Information capacity and versions of QR Code | | DENSO WAVEĪs the value of version increases, the number of cells (square black and white dots) included in the QR code increases, and the image size and the information capacity increase.The version of the QR code of the generated image can be set to version.įor the relationship between the information capacity and versions of QR code, refer to the official page of Denso Wave below. QR code version of the generated image: version Generated, but when I scan that QR Code it returns the hash string in text.Each parameter will be described below. Actually, when we are converting the file path(by using has), QR Code are successfully Var hashString = Convert.ToBase64String(hash) Var hash = cryptoService.ComputeHash(fileStream) ![]() Using (var fileStream = new FileStream(filePath, this can be either MD5, SHA1, SHA256, SHA384 or SHA512 create or use the instance of the crypto service provider ![]() String GetHashCode(string filePath, HashAlgorithm cryptoService) qrCodeImage.Save(Server.MapPath("/csharpDemo2/code.jpg")) String strCode = GetHashCode(Server.MapPath("/csharpDemo2/ele.gif"), new SHA256CryptoServiceProvider()) protected void Page_Load(object sender, EventArgs e) The hashed string could generate QR-Code.īelow is my code. Default is true.īelow is my code using hash algorithm and it could hash doc,image files. That is, whether to draw a blank border area of the QR code. Int iconBorderWidth: The border of the watermark iconīool drawQuietZones: A still area, located on a blank border on one side of the QR code, used to prevent the reader from obtaining information that is unrelated to the QR code being viewed. Int iconSizePercent: The size ratio of the watermark icon, which can be set according to your preferences. ![]() Int pixelsPerModule: The pixel size of the generated QR imageĬolor darkColor: Dark color Normally set to Color.Black BlackĬolor lightColor: Bright color is generally set to Color.White whiteīitmap icon : QR code Watermark icon For example: Bitmap icon = new Bitmap(("~/images/zs.png")) The default is NULL, plus an icon will be displayed in the middle of the QR code. Public Bitmap GetGraphic(int pixelsPerModule, Color darkColor, Color lightColor, Bitmap icon = null, int iconSizePercent = 15, int iconBorderWidth = 6, bool drawQuietZones = true) * GetGraphic method parameter description remove qrCodeImage.Save(Server.MapPath("/csharpDemo2/code.jpg")) and write MemoryStream ms = new MemoryStream() qrCodeImage.Save(ms,ImageFormat.Jpeg) ="image/Jpeg" (ms.ToArray()) īelow is the explanation for the method qrcode.GetGraphic. ![]() if you want to write to browser as binary, you could try the code below. QrCodeImage.Save(Server.MapPath("/csharpDemo2/code.jpg")) //write your path where you want to store the qr-code image. QRCodeData qrCodeData = qrGenerator.CreateQrCode(strCode, ) īitmap qrCodeImage = qrcode.GetGraphic(5, Color.Black, Color.White, null, 15, 6, false) QRCodeGenerator qrGenerator = new QRCoder.QRCodeGenerator() string strCode = File.ReadAllText(Server.MapPath("/csharpDemo2/qrcode.txt")) //write your path of the text You could use QRCoder to generate QR-Code in c#,please use nuget, input QRCoder and install it into your project.īelow is sample code.
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