Unable to cast Annot to widget

[nintexkj]

Product: PDFTron.NET.x64 C#

Product Version: 9.0.0 and 9.1.0

Please give a brief summary of your issue:
Unable to cast Annot back to widget

Please describe your issue and provide steps to reproduce it:
I having issue in the code. When I open a pdf document with form, I cannot cast the annot into widget to get the field information, even though it is a widget type.

Please provide a link to a minimal sample where the issue is reproducible:
Here is the sample code:

using (PDFDoc doc = new PDFDoc("some document with form and text field") {
	var page = doc.GetPage(1);
	var annot = page.GetAnnot(0);
	if (annot.GetType() == Annot.Type.e_Widget)
	{
        var widget = annot as Widget; // ** Cannot cast back to widget

        var field = widget.GetField();
	    .....
    }
}

[system]

Hello, I’m Ron, an automated tech support bot

While you wait for one of our customer support representatives to get back to you, please check out some of these documentation pages:

Guides:

• Flatten PDF annotations on Cross-Platform (Core) - About annotation flattening
• API for Annotating PDFs on Cross-Platform (Core)
• APIs for PDF form filling on Cross-Platform (Core)
• Convert between different coordinates on Cross-Platform (Core) - Understanding coordinates

APIs:

• AnnotsCompat.Widget - public static long Create (long doc, long pos, long field)
• Widget - public Widget (Annot annot)
• TextSearch - public boolean begin (PDFDoc doc, String pattern, int mode, int start_page, int end_page)

Forums:

• How do I get a field name from a Widget annotation?
• How do I extract text from PDF forms?
• Adding Javascript to PDF files generated with Adobe Livecycle Designer

[Ryan]

Please use the following pattern to convert an Annot to a Widget (or any other Annot types).

var widget = new Widget(annot);