Using iTextSharp to check checkboxes.

[sizzlefire]

Hello everyone, I am currently working on a project for a friend and have encountered some issues. I am attempting to fill out a form with a library called iTextsharp: http://itextpdf.com/ The form that I am attempting to fill out is http://www.copyright.gov/forms/formco2d.pdf and I have been able to fill out the text input fields, however I have not been able to figure out how to check the checkboxes. The code I am using is as follows:

string formFile = @"C:\Users\Owner\Documents\formco2d.pdf";
            string newFile = @"C:\Users\Owner\Documents\formco2dfilledout.pdf";
            PdfReader reader = new PdfReader(formFile);
            PdfStamper stamper = new PdfStamper(reader, new FileStream(newFile, FileMode.Create));
            AcroFields fields = stamper.AcroFields;

            // set form fields
            fields.SetField("serial_1a", "True");
            fields.SetField("f1b", "Title Of Work");
            fields.SetField("f1cv", "Volume");
            fields.SetField("f1cn", "Number");
            fields.SetField("f1ci", "Issue");

            stamper.Close();
            button1.Text = "Done";

That code fills out the fields just fine, but has no effect on the actual checkboxes. I have tried sending True, 1, Active, etc to them but nothing makes them active.

Does anyone have any ideas on what I might be able to do about this?

[nick.crane]

The default Checkbox field export value is "Yes". Did you try this?

[sizzlefire]

I have tried yes, however it does not take that either, the box stays unchecked.

[sizzlefire]

Sorry to bump, but this is still causing me major problems, does anyone have any experience with iTextSharp and can maybe help?

[Vitaliy_1]

the pdf filed has an Export Value on Options tab. To set a check box with iTextSharp you should pass this value as a second parameter into the SetField method (for CheckBox default is On)

[Hamza_25]

You can use PDFEscape to get the Export value you need.

You upload your PDF file, you right click on a check box, you unlock it, then you right click again to get the object properties. It will open a window with the name of check box and the export value needed.

It avoids you to pay for an adobe license :)

[TexasPrd]

Sorry to resurrect an old thread, but this thread gets about the closest I've seen to the question/issue I'm having (I've not been able to find a definite answer).

My question is - is the export value case-sensitive? For a checkbox - if the export value is "Yes", will supplying a value of "yes" or "YES" in the SetField statement cause the checkbox to be checked?

Thanks for any help - again, sorry to bring up an old thread

[Fernando_28]

try this:

Dim MyPDFFormCheckBoxField As Fields.PdfFormField = myform.GetField("myCheckBox")
MyPDFFormCheckBoxField.SetCheckType(PdfFormField.TYPE_CHECK)
MyPDFFormCheckBoxField.SetValue("", If(myCheckBox.IsChecked = True, True, False))

This:
If(myCheckBox.IsChecked = True, True, False)
is what actually check or not the checkbox on the PDF, notice this is the second paramenter of SetValue!