PDFViewer clear active PDF

Ignition
1

I’m using the Vision -> Reporting -> PDF Viewer to display PDF’s loaded from a SQL Database as bytes.

I can load a PDF without issue, but I’m trying to figure out how to actually then clear out the loaded PDF at runtime.

I’ve tried this:

emptyPDF = system.file.getTempFile('pdf')
pdfByes = system.file.readFileAsBytes(emptyPDF)
try:
	event.source.parent.getComponent('pdfViewer').loadPDFBytes(pdfByes,'')
except:
	#This will create an error. That's ok.
	pass

However I get an ICEpdf error popup that I can’t seem to avoid. I’m fine with it throwing an error, I just don’t want to see it in this instance.

Is there any good way to do clear out the loaded PDF?

2

Have you tried using an empty list instead of an empty string?

3

Same error. This is what it displays

image

Which I get because it’s an empty file. I just don’t want to see the exception when I do this.

4

event.source.parent.controller.closeDocument(), maybe?

5

event.source.parent.getComponent(‘PDF Viewer’).getController().closeDocument()

@PGriffith was correct first.

His suggestion also works:
event.source.parent.getComponent(‘PDF Viewer’).controller.closeDocument()

1 Like
6

This worked like a charm.

Thanks!