This sample shows how to read items of combo boxes in a PDF document using Docotic.Pdf library.
The PdfComboBox class is a child of the PdfWidget class. You can access all the widgets associated with a page by enumerating a read-only collection of PdfWidget objects.
Use the PdfPage.Widgets property to get the collection. Then check if a widget is an instance of the PdfComboBox class. You can read combo box items using the PdfComboBox.Items property.