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VB.NET PowerPoint - Guide for Barcode Scanning

How to Read & Scan 1D & 2D Barcode Images from PPT Slide Using VB.NET

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Home > .NET Imaging SDK > VB.NET > PowerPoint: Barcode Decoding
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This VB.NET PowerPoint barcode reader SDK, which combines independent PPT (.pptx) reading APIs and advanced barcode decoding functions into several compact RasterEdge dlls, offers developers a professional .NET solution to read and scan 1d & 2d barcode images from PowerPoint slide. This VB.NET PPT barcode scanning tutorial page will introduce mature 1d & 2d barcode detecting and reading functions from two main aspects.
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  • What APIs will be used in VB.NET PowerPoint barcode reading and decoding applications?
  • How many barcode types are supported by this VB.NET PPT barcode scanner & reader control SDK?
PPT Barcode Reading APIs
Following VB.NET APIs are used to read and recognize 1d and 2d barcode images from source PowerPoint slide.
Private Function ToImage() As BaseImage Implements REPage.ToImage
End Function
Private Function Scan(img As REImage, type As BarcodeType) As [String]() Implements BarcodeScanner.Scan
End Function
Private Function ScanRegions(img As REImage, type As BarcodeType, setting As Setting) As [String]() Implements BarcodeScanner.ScanRegions
End Function
API Explanations: To avoid unnecessary confusion, we here specifically introduce some VB.NET programming classes and methods that you may use in the process of PPT barcode detection and recognition.
  • PPTXDocument: this class is used as an abstraction to represent one in-memory PowerPoint document file and it is derived from super class REDocument.
  • PPTXPage: this class is defined to display one PPT slide in Visual Basic .NET programming application.
  • ToImage(): as this VB.NET PowerPoint barcode reader control can only read barcode from image object, it will render source PPT slide to image object using ToImage method first.
  • Scan(): this barcode reading method will direct VB.NET PPT barcode scanner to detect barcode image(s) from scanning whole PPT slide.
  • ScanRegions(): if you just want to detect barcode image(s) from scanning defined slide area, please use this method to customize your VB.NET PPT barcode scanning process.
Supported Barcode Types
We list all supported 1d & 2d barcode types here. If you want to see detailed Visual Basic .NET programming code for reading certain barcode image from PPT (.pptx) slide, just follow attached link.
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