从图像中读取二维条码

Question

我需要一个库来从C#项目(windows Forms)上的图像中读取二维条码(datamatrix).我尝试使用一些SDK,但我尝试的SDK不是免费的.

有没有免费的SDK用于从图像中读取2d条形码？

Answer 1

有一个可用的例子：

  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();
  }

您需要DataMatrix.net！