Generate QR code in Devexpress can't use lowercase ?

Dong Lam Trien

Can't use lowercase letters in Devexpress to generate QR codes? Or is there a library called that can generate lowercase uppercase QR codes with less error ?

6 Replies

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Marvin Reid5y ago
I haven’t tried Spire, but I found the tutorial lightweight, easy to follow and got no errors with the LEADTOOLS link. It gives a small project that you can run in Visual Studio.
Dong Lam Trien5y ago
I read the documentation on the https://www.e-iceblue.com/Knowledgeb...e.BarCode.html net and added the library using Spire.Barcode; into Visual Studio, but got the error below, do you know how to fix this error? library you see attached file https://www.mediafire.com/file/53zu0...rcode.dll/file

warning error:

The currently targeted framework ".NETFramework,Version=v4.0,Profile=Client" does not include "System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" which the referenced assembly "Spire.Barcode, Version=1.2.5.21040, Culture=neutral, PublicKeyToken=663f351905198cb3, processorArchitecture=MSIL" depends on. This caused the referenced assembly to not resolve. To fix this, either (1) change the targeted framework for this project, or (2) remove the referenced assembly from the project.

Have you tried Spire.Barcode and compared with LEADTOOLS SDK which is easier to use and lighter, less error ?
Marvin Reid5y ago
You can use the BarcodeWriter class provided through the LEADTOOLS SDK to create a barcode that has both lowercase and uppercase values. You can set this value through the BarcodeData Value property. You can try the following code to test this.
static void WriteQRBarcode(RasterImage image)
{
   QRBarcodeData data = new QRBarcodeData
   {
      SymbolModel = QRBarcodeSymbolModel.Model1AutoSize,
      Symbology = BarcodeSymbology.QR,
      Value = "TesT",

      Bounds = new LeadRect(10, 250, image.ImageWidth, image.ImageHeight)
   };

   QRBarcodeWriteOptions options = new QRBarcodeWriteOptions
   {
      GroupNumber = 0,
      GroupTotal = 0,
      XModule = 30,
      ECCLevel = QRBarcodeECCLevel.LevelL,
      HorizontalAlignment = BarcodeAlignment.Near,
      VerticalAlignment = BarcodeAlignment.Near
   };

   barcodeEngine.Writer.WriteBarcode(image, data, options);
}
https://www.leadtools.com/help/sdk/v21/tutorials/dotnet-console-write-1d-and-2d-barcodes-to-an-image.html
https://www.leadtools.com/help/sdk/v21/dh/ba/barcodedata-value.html
Rijwan Ansari5y ago
Hi,

Try this

https://www.c-sharpcorner.com/article/barcode-and-qrcode-application-in-winforms/
Dong Lam Trien5y ago
this link i came across, i downloaded their example works fine, i created a new one and followed the instructions on this page it doesn't work and i get the library error using Spire.Barcode; even though i added the library to winform but still getting error warning
Sapna Girish5y ago
Check this link out

https://www.c-sharpcorner.com/UploadFile/38268a/generating-qr-code-in-C-Sharp/