PdfChoiceFormField Class

Represents a choice field (a combo box, list box) on a PDF form.

Namespace: DevExpress.Pdf

Assembly: DevExpress.Pdf.v23.2.Core.dll

NuGet Package: DevExpress.Pdf.Core

Declaration

C#

public class PdfChoiceFormField :
    PdfInteractiveFormField

VB.NET

Public Class PdfChoiceFormField
    Inherits PdfInteractiveFormField

Remarks

The code sample below retrieves a combo box form field by name and changes its properties:

C#

using (PdfDocumentProcessor pdfDocumentProcessor = new PdfDocumentProcessor())
{
    pdfDocumentProcessor.LoadDocument("FormDemo.pdf");
    ChangeFormFields(pdfDocumentProcessor);
    pdfDocumentProcessor.SaveDocument("FormDemo.pdf");
    Process.Start(new ProcessStartInfo("FormDemo.pdf")
       { UseShellExecute = true });
}


  private static void ChangeFormFields(PdfDocumentProcessor pdfDocumentProcessor)
  {
      //Change combo box field properties:
      PdfChoiceFormField nationalityFormField = (PdfChoiceFormField)acroForm.GetFormField("Nationality");
      nationalityFormField.Editable = false;
      nationalityFormField.MultiSelect = false;
  }

VB.NET

Using pdfDocumentProcessor As New PdfDocumentProcessor()
  pdfDocumentProcessor.LoadDocument("FormDemo.pdf")
  ChangeFormFields(pdfDocumentProcessor)
  pdfDocumentProcessor.SaveDocument("FormDemo.pdf")
  Process.Start(New ProcessStartInfo("FormDemo.pdf") With {.UseShellExecute = True})
End Using


  private static void ChangeFormFields(PdfDocumentProcessor pdfDocumentProcessor)
    Dim acroForm As PdfInteractiveForm = pdfDocumentProcessor.Document.AcroForm

    'Change combo box field properties:
    Dim nationalityFormField As PdfChoiceFormField = CType(acroForm.GetFormField("Nationality"), PdfChoiceFormField)
    nationalityFormField.Editable = False
    nationalityFormField.MultiSelect = False
    End Sub

Inheritance

Object

DevExpress.Pdf.Native.PdfDocumentItem

DevExpress.Pdf.Native.PdfObject

PdfInteractiveFormField

PdfChoiceFormField