🛠️ .NET Framework 4.5 Integration Example

This example shows how to use the ATS CodeCheck native shared library from a .NET Framework 4.5 application using P/Invoke to call native functions like ATS_Init, ATS_Activate, ATS_CheckCode, and ATS_GetVersion.

🧱 Native Function Signatures

Make sure to use the correct function signatures defined in the native library:

extern int ATS_Init(char* jsonResponseBuffer, int bufferSize);
extern int ATS_CheckCode(const char* jsonRequest, char* jsonResponseBuffer, int bufferSize);
extern int ATS_GetVersion(char* versionBuffer, int bufferSize);
extern int ATS_Activate(const char* jsonRequest, char* jsonResponseBuffer, int bufferSize);

📄 C# Declaration

using System;
using System.Runtime.InteropServices;
using System.Text;

class Program
{
  [DllImport("atscodecheck.dll", CallingConvention = CallingConvention.Cdecl)]
  public static extern int ATS_Init(StringBuilder jsonResponseBuffer, int bufferSize);

  [DllImport("atscodecheck.dll", CallingConvention = CallingConvention.Cdecl)]
  public static extern int ATS_GetVersion(StringBuilder versionBuffer, int bufferSize);

  [DllImport("atscodecheck.dll", CallingConvention = CallingConvention.Cdecl)]
  public static extern int ATS_CheckCode(string jsonRequest, StringBuilder jsonResponseBuffer, int bufferSize);

  [DllImport("atscodecheck.dll", CallingConvention = CallingConvention.Cdecl)]
  public static extern int ATS_Activate(string jsonRequest, StringBuilder jsonResponseBuffer, int bufferSize);

  static void Main()
  {
      StringBuilder initResponse = new StringBuilder(2048);
      if (ATS_Init(initResponse, initResponse.Capacity) != 0)
      {
          Console.WriteLine("❌ Initialization failed");
          return;
      }
      else
      {
          Console.WriteLine("✅ Initialization successful: " + initResponse.ToString());
      }

      // Get library version
      StringBuilder version = new StringBuilder(256);
      if (ATS_GetVersion(version, version.Capacity) == 0)
      {
          Console.WriteLine("📦 Library Version: " + version.ToString());
      }

      // Activate license
      string activationJson = "{"licenseKey": "REPLACE_WITH_ACTIVATION_KEY"}";
      StringBuilder activationResponse = new StringBuilder(2048);
      int activationResult = ATS_Activate(activationJson, activationResponse, activationResponse.Capacity);

      if (activationResult == 0)
      {
          Console.WriteLine("🔓 Activation successful: " + activationResponse.ToString());
      }
      else
      {
          Console.WriteLine("❌ ATS_Activate failed with code: " + activationResult);
      }

      // Create request
      string base64Barcode = "REPLACE_WITH_VALID_BASE64";
      string json = $"{}";

      StringBuilder response = new StringBuilder(2048);
      int result = ATS_CheckCode(json, response, response.Capacity);

      if (result == 0)
      {
          Console.WriteLine("✅ Response: " + response.ToString());
      }
      else
      {
          Console.WriteLine("❌ ATS_CheckCode failed with code: " + result);
      }
  }
}

⚠️ Note:

• Ensure atscodecheck.dll and libatscodecheck.h are placed in your build output directory.

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📬 Questions?

Contact support@atscodecheck.dev for help.