BarcodeQRCodeSDK 2.4.0

1D and 2D Barcode SDK

This project provides a .NET wrapper for the Dynamsoft Barcode Reader SDK v9.x, enabling 1D and 2D barcode recognition for .NET and C++ applications. It supports development across multiple platforms, including Windows, Linux, macOS, Android, and iOS. The wrapper is designed to allow complete customization of the .NET API to suit your specific barcode scanning needs.

Note: This project is an unofficial, community-maintained .NET wrapper for the Dynamsoft Barcode SDK. For the most reliable and fully-supported solution, consider using Dynamsoft's official packages: Dynamsoft.DotNet.Barcode for Windows and Linux, and Dynamsoft.BarcodeReaderBundle.Maui for Android and iOS.

About Dynamsoft .NET Barcode SDK

• Get a 30-day FREE trial license to activate the SDK.
• Official .NET Packages:

  • Dynamsoft.DotNet.Barcode: A comprehensive .NET barcode SDK for Windows and Linux platforms.

    dotnet add package Dynamsoft.DotNet.Barcode
    

  • Dynamsoft.BarcodeReaderBundle.Maui: A cross-platform barcode SDK for Android and iOS, optimized for .NET MAUI applications.

    dotnet add package Dynamsoft.BarcodeReaderBundle.Maui
    

Comparison Table

C++ Development

Quick Start

#include <iostream>
#include <fstream>

#include "DynamsoftBarcodeReader.h"
#include "DynamsoftCommon.h"

using namespace dynamsoft::dbr;

typedef struct BarcodeFormatSet
{
	int barcodeFormatIds;
	int barcodeFormatIds_2;
}BarcodeFormatSet;

unsigned long GetTime()
{
#if defined(_WIN64) || defined(_WIN32)
	return GetTickCount64();
#else
	struct timeval timing;
	gettimeofday(&timing, NULL);
	return timing.tv_sec * 1000 + timing.tv_usec / 1000;
#endif
}

void ToHexString(unsigned char* pSrc, int iLen, char* pDest)
{
	const char HEXCHARS[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };

	int i;
	char* ptr = pDest;

	for (i = 0; i < iLen; ++i)
	{
		snprintf(ptr, 4, "%c%c ", HEXCHARS[(pSrc[i] & 0xF0) >> 4], HEXCHARS[(pSrc[i] & 0x0F) >> 0]);
		ptr += 3;
	}
}

void OutputResult(CBarcodeReader& reader, int errorcode, float time)
{
	char* pszTemp = NULL;
	char* pszTemp1 = NULL;
	char* pszTemp2 = NULL;
	int iRet = errorcode;
	pszTemp = (char*)malloc(4096);
	if (iRet != DBR_OK && iRet != DBRERR_MAXICODE_LICENSE_INVALID && iRet != DBRERR_AZTEC_LICENSE_INVALID && iRet != DBRERR_LICENSE_EXPIRED && iRet != DBRERR_QR_LICENSE_INVALID && iRet != DBRERR_GS1_COMPOSITE_LICENSE_INVALID &&
		iRet != DBRERR_1D_LICENSE_INVALID && iRet != DBRERR_PDF417_LICENSE_INVALID && iRet != DBRERR_DATAMATRIX_LICENSE_INVALID && iRet != DBRERR_GS1_DATABAR_LICENSE_INVALID && iRet != DBRERR_PATCHCODE_LICENSE_INVALID &&
		iRet != DBRERR_POSTALCODE_LICENSE_INVALID && iRet != DBRERR_DOTCODE_LICENSE_INVALID && iRet != DBRERR_DPM_LICENSE_INVALID && iRet != DBRERR_IRT_LICENSE_INVALID && iRet != DMERR_NO_LICENSE && iRet != DMERR_TRIAL_LICENSE)
	{
		snprintf(pszTemp, 4096, "Failed to read barcode: %s\r\n", CBarcodeReader::GetErrorString(iRet));
		printf("%s", pszTemp);
		free(pszTemp);
		return;
	}

	TextResultArray* paryResult = NULL;
	reader.GetAllTextResults(&paryResult);

	if (paryResult->resultsCount == 0)
	{
		snprintf(pszTemp, 4096, "No barcode found. Total time spent: %.3f seconds.\r\n", time);
		printf("%s", pszTemp);
		free(pszTemp);
		CBarcodeReader::FreeTextResults(&paryResult);
		return;
	}

	snprintf(pszTemp, 4096, "Total barcode(s) found: %d. Total time spent: %.3f seconds\r\n\r\n", paryResult->resultsCount, time);
	printf("%s", pszTemp);
	for (int iIndex = 0; iIndex < paryResult->resultsCount; iIndex++)
	{
		snprintf(pszTemp, 4096, "Barcode %d:\r\n", iIndex + 1);
		printf("%s", pszTemp);
		snprintf(pszTemp, 4096, "    Type: %s\r\n", paryResult->results[iIndex]->barcodeFormatString);

		printf("%s", pszTemp);
		snprintf(pszTemp, 4096, "    Value: %s\r\n", paryResult->results[iIndex]->barcodeText);
		printf("%s", pszTemp);

		pszTemp1 = (char*)malloc(paryResult->results[iIndex]->barcodeBytesLength * 3 + 1);
		pszTemp2 = (char*)malloc(paryResult->results[iIndex]->barcodeBytesLength * 3 + 100);
		ToHexString(paryResult->results[iIndex]->barcodeBytes, paryResult->results[iIndex]->barcodeBytesLength, pszTemp1);
		snprintf(pszTemp2, paryResult->results[iIndex]->barcodeBytesLength * 3 + 100, "    Hex Data: %s\r\n", pszTemp1);
		printf("%s", pszTemp2);
		free(pszTemp1);
		free(pszTemp2);
	}

	free(pszTemp);
	CBarcodeReader::FreeTextResults(&paryResult);
}

int main(int argc, const char* argv[])
{
	int iIndex = 0;
	int iRet = -1;
	unsigned long ullTimeBegin = 0;
	unsigned long ullTimeEnd = 0;

	char szErrorMsg[256];
	PublicRuntimeSettings runtimeSettings;

	printf("*************************************************\r\n");
	printf("Welcome to Dynamsoft Barcode Reader Demo\r\n");
	printf("*************************************************\r\n");
	printf("Hints: Please input 'Q' or 'q' to quit the application.\r\n");

	iRet = CBarcodeReader::InitLicense("LICENSE-KEY", szErrorMsg, 256);
	if (iRet != DBR_OK)
	{
		printf("InitLicense Failed: %s\n", szErrorMsg);
	}
	CBarcodeReader reader;


	while (1)
	{
		std::string input;
		std::cout << "\r\n>> Step 1: Input your image file's full path:\r\n";
		std::cin >> input;

		if (input._Equal("q") || input._Equal("Q"))
		{
			return true;
		}

		std::ifstream file(input);

		if (!file.good()) {
			std::cout << "Please input a valid path.\r\n" << std::endl;
			continue;
		}

		reader.InitRuntimeSettingsWithString("{\"ImageParameter\":{\"Name\":\"BestCoverage\",\"BarcodeFormatIds\": [\"BF_ALL\"],\"BarcodeFormatIds_2\": [\"BF2_POSTALCODE\", \"BF2_DOTCODE\"] , \"DeblurLevel\":9,\"ExpectedBarcodesCount\":512,\"ScaleDownThreshold\":100000,\"LocalizationModes\":[{\"Mode\":\"LM_CONNECTED_BLOCKS\"},{\"Mode\":\"LM_SCAN_DIRECTLY\"},{\"Mode\":\"LM_STATISTICS\"},{\"Mode\":\"LM_LINES\"},{\"Mode\":\"LM_STATISTICS_MARKS\"}],\"GrayscaleTransformationModes\":[{\"Mode\":\"GTM_ORIGINAL\"},{\"Mode\":\"GTM_INVERTED\"}]}}", CM_OVERWRITE, szErrorMsg, 256);

		reader.GetRuntimeSettings(&runtimeSettings);
		runtimeSettings.barcodeFormatIds = BF_ALL;
		runtimeSettings.barcodeFormatIds_2 = BF2_POSTALCODE | BF2_DOTCODE;
		iRet = reader.UpdateRuntimeSettings(&runtimeSettings, szErrorMsg, 256);
		if (iRet != DBR_OK)
		{
			printf("Error code: %d. Error message: %s\n", iRet, szErrorMsg);
			return -1;
		}

		ullTimeBegin = GetTime();
		iRet = reader.DecodeFile(input.c_str(), "");
		ullTimeEnd = GetTime();
		OutputResult(reader, iRet, (((float)(ullTimeEnd - ullTimeBegin)) / 1000));

	}

	return 0;
}

Please refer to C++ Development for more information.

.NET Development

Quick Start

using System;
using Dynamsoft;

namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            BarcodeQRCodeReader.InitLicense("LICENSE-KEY"); // Get a license key from https://www.dynamsoft.com/customer/license/trialLicense?product=dbr
            BarcodeQRCodeReader? reader = null;
            try {
                reader = BarcodeQRCodeReader.Create();
                Console.WriteLine("Please enter an image file: ");
                string? filename = Console.ReadLine();
                if (filename != null) {
                    Result[]? results = reader.DecodeFile(filename);
                    if (results != null) {
                        foreach (Result result in results) {
                            Console.WriteLine(result.Text);
                        }
                    }
                    else {
                        Console.WriteLine("No barcode found.");
                    }
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
            finally
            {
                if (reader != null)
                {
                    reader.Destroy();
                }
            }
        }
    }
}

Methods

• public static void InitLicense(string license)
• public static BarcodeQRCodeReader Create()
• public Result[]? DecodeFile(string filename)
• public Result[]? DecodeBuffer(byte[] buffer, int width, int height, int stride, ImagePixelFormat format)
• public Result[]? DecodeBase64(string base64string)
• public static string? GetVersionInfo()
• public void SetParameters(string parameters)

Usage

• Set the license key:

  BarcodeQRCodeReader.InitLicense("LICENSE-KEY"); 
  

• Initialize the barcode and QR code reader object:

  BarcodeQRCodeReader? reader = BarcodeQRCodeReader.Create();
  

• Decode barcode and QR code from an image file:

  Result[]? results = reader.DecodeFile(filename);
  

• Decode barcode and QR code from a base64 string:

  Result[]? results = reader.DecodeBase64(base64string);
  

• Decode barcode and QR code from a buffer:

  BitmapData bmpData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height),
  ImageLockMode.ReadWrite, bitmap.PixelFormat);
  
  BarcodeQRCodeReader.ImagePixelFormat format = BarcodeQRCodeReader.ImagePixelFormat.IPF_ARGB_8888;
  
  switch (bitmap.PixelFormat)
  {
      case PixelFormat.Format24bppRgb:
          format = BarcodeQRCodeReader.ImagePixelFormat.IPF_RGB_888;
          break;
      case PixelFormat.Format32bppArgb:
          format = BarcodeQRCodeReader.ImagePixelFormat.IPF_ARGB_8888;
          break;
      case PixelFormat.Format16bppRgb565:
          format = BarcodeQRCodeReader.ImagePixelFormat.IPF_RGB_565;
          break;
      case PixelFormat.Format16bppRgb555:
          format = BarcodeQRCodeReader.ImagePixelFormat.IPF_RGB_555;
          break;
      case PixelFormat.Format8bppIndexed:
          format = BarcodeQRCodeReader.ImagePixelFormat.IPF_GRAYSCALED;
          break;
  }
  
  int length = bitmap.Height * bmpData.Stride;
  byte[] bytes = new byte[length];
  Marshal.Copy(bmpData.Scan0, bytes, 0, length);
  
  Result[]? results = reader.DecodeBuffer(bytes, bitmap.Width, bitmap.Height, bmpData.Stride, format);
  bitmap.UnlockBits(bmpData);
  

• Get SDK version number:

  string? version = BarcodeQRCodeReader.GetVersionInfo();
  

• Customize parameters:

  // Refer to https://www.dynamsoft.com/barcode-reader/parameters/structure-and-interfaces-of-parameters.html?ver=latest
  reader.SetParameters("{\"Version\":\"3.0\", \"ImageParameter\":{\"Name\":\"IP1\", \"BarcodeFormatIds\":[\"BF_QR_CODE\", \"BF_ONED\"], \"ExpectedBarcodesCount\":20}}");
  

Example

• command-line

  dotnet restore
  dotnet run
  

  

• desktop-gui (Windows Only)

  dotnet restore
  dotnet run
  

  

• web

  dotnet restore
  dotnet run
  

  

• Mobile

  

Building NuGet Package from Source Code

#android 
cd android
dotnet build --configuration Release

#desktop
cd desktop
dotnet build --configuration Release

#ios 
cd ios
dotnet build --configuration Release

# package
nuget pack .\BarcodeQRCodeSDK.nuspec

Supported Barcode Symbologies

• Linear Barcodes (1D)

  • Code 39 (including Code 39 Extended)
  • Code 93
  • Code 128
  • Codabar
  • Interleaved 2 of 5
  • EAN-8
  • EAN-13
  • UPC-A
  • UPC-E
  • Industrial 2 of 5

• 2D Barcodes

  • QR Code (including Micro QR Code and Model 1)
  • Data Matrix
  • PDF417 (including Micro PDF417)
  • Aztec Code
  • MaxiCode (mode 2-5)
  • DotCode

• Patch Code

• GS1 Composite Code

• GS1 DataBar

  • Omnidirectional,
  • Truncated, Stacked, Stacked
  • Omnidirectional, Limited,
  • Expanded, Expanded Stacked

• Postal Codes

  • USPS Intelligent Mail
  • Postnet
  • Planet
  • Australian Post
  • UK Royal Mail