Question

I need a library to read 2D barcode (datamatrix) from images on C# project (windows Forms).
I tried using some SDKs, but the SDKs I tried are not free.

Is there any free SDK for reading 2d Barcode from images?

Answer 1

There’s an example available:

  using DataMatrix.net;               // Add ref to DataMatrix.net.dll
  using System.Drawing;               // Add ref to System.Drawing.
  [...]

  // ---------------------------------------------------------------
  // Date      180310
  // Purpose   Get text from a DataMatrix image.
  // Entry     sFileName - Name of the barcode file (PNG, + path).
  // Return    The text.
  // Comments  See source, project DataMatrixTest, Program.cs.
  // ---------------------------------------------------------------
  private string DecodeText(string sFileName)
  {
      DmtxImageDecoder decoder = new DmtxImageDecoder();
      System.Drawing.Bitmap oBitmap = new System.Drawing.Bitmap(sFileName);
      List<string> oList = decoder.DecodeImage(oBitmap);

      StringBuilder sb = new StringBuilder();
      sb.Length = 0;
      foreach (string s in oList)
      {
          sb.Append(s);
      }
      return sb.ToString();
  }

You’ll need DataMatrix.net!