Recognize Barcode from Word Document

In this article, we will recognize barcode from a Word document using Aspose.BarCode and Aspose.Words.

We will follow the below steps for reading barcode from the Word document:

Extract image from Word document using Aspose.Words for .NET
Save the extracted image as stream
Pass the image in form of stream to Aspose.BarCode for .NET
Read barcode from the image

Below are the details and sample code snippet for each step:

Use Aspose.Words.Document class to open the Word document. Call Document.GetChildNodes() method to get a collection of all the shapes (including images) in the Word document.

In a foreach loop on the collection, check if the shape has an image using Shape.HasImage property and call Shape.ImageData.Save() method and save the image to stream. Initialize Aspose.BarCodeRecognition.BarCodeReader class with the stream and symbology type and then call BarCodeReader.Read() method to read the barcodes from the stream (image).

The sample code snippet is given below:

[C#]

// Load the word document
Document wordDocument = new Document("Invitation.doc");
// get all the shapes
NodeCollection shapes = wordDocument.GetChildNodes(NodeType.Shape, true, false);
// loop through all the shapes
foreach (Shape shape in shapes)
{
    // check if it has an image
    if (shape.HasImage)
    {
        // save the image in memory stream
        MemoryStream imgStream = new MemoryStream();
        shape.ImageData.Save(imgStream);

        // recognize the barcode from the image stream above
        BarCodeReader reader = new BarCodeReader(new Bitmap(imgStream), BarCodeReadType.Code39Standard);
        while(reader.Read())
        {
            Console.WriteLine("Codetext found: " + reader.GetCodeText());
        }
        // close the reader
        reader.Close();
    }

[VB.NET]

' Load the word document
Dim wordDocument As Document = New Document("Invitation.doc")
' get all the shapes
Dim shapes As NodeCollection = wordDocument.GetChildNodes(NodeType.Shape, True, False)
' loop through all the shapes
For Each shape As Shape In shapes
   ' check if it has an image
   If shape.HasImage Then
      ' save the image in memory stream
      Dim imgStream As MemoryStream = New MemoryStream()
      shape.ImageData.Save(imgStream)

      ' recognize the barcode from the image stream above
      Dim reader As BarCodeReader = New BarCodeReader(New Bitmap(imgStream), BarCodeReadType.Code39Standard)
      Do While reader.Read()
         Console.WriteLine("Codetext found: " & reader.GetCodeText())
      Loop
      ' close the reader
      reader.Close()
   End If
Next shape

The evaluation version of Aspose.BarCode for .NET can only recognize Code39 barcodes. If the image contains barcode of other than Code39 symbology type, a valid license must be set. For getting temporary license for 30 days, please visit http://www.aspose.com/corporate/purchase/temporary-license.aspx for more details.

Recognize Barcode from Word Document

Below are the details and sample code snippet for each step:

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