1. Feedback
  2. WinForms
  3. 35869

Welcome to the WinForms feedback portal. We’re happy you’re here! If you have feedback on how to improve the WinForms, we’d love to hear it!

  • Check out the features or bugs others have reported and vote on your favorites. Feedback will be prioritized based on popularity.
  • If you have feedback that’s not listed yet, submit your own.

Thanks for joining our community and helping improve Syncfusion products!

1
Vote

PdfEan13Barcode and PdfEan8Barcode: error when calling ToImage() on base class

PdfEan13Barcode ean13Code = new PdfEan13Barcode();

ean13Code.Text = "5901234123457";

// works

ean13Code.ToImage();

PdfUnidimensionalBarcode unidimensionalCode = ean13Code;

// doesn't work

unidimensionalCode.ToImage();

throws

System.ArgumentException: Invalid parameter.

   at System.Drawing.Bitmap..ctor(Int32 width, Int32 height, PixelFormat format)

   at Syncfusion.Pdf.Barcode.PdfUnidimensionalBarcode.ToImage()


I assume this is because PdfEan13Barcode and PdfEan8Barcode declare a virtual ToImage() method

public class PdfEan13Barcode : PdfUnidimensionalBarcode 

{

...

public virtual Image ToImage();

...

}


instead of an override ToImage() method to override the base class' virtual method ToImage()


public class PdfUnidimensionalBarcode : PdfBarcode

{

...

public virtual Image ToImage();

...

}