FAQs

How to format a field as a currency?

I use iTextSharp to populate a form with data. I just learned [/question/how-format-field-percentage](how to format a field as a percentage). Now I need to learn how to format numbers.

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How to insert a "linked rectangle" with iText?

I want to insert a hyperlink into an existing PDF at a position I know in advance: I already have the coordinates of a rectangle on a given page. I want to link this rectangle to another page of the same PDF (which I also know in advance). How do I achieve this?

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How to add an onMouseOver javaScript action to a TextField?

How can I add javascripts to iTextsharp created textfields?

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How to set the BaseUrl of an existing PDF document?

We're having trouble setting a BaseUrl using iTextSharp.

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How to make a field not required?

I am trying to make a field not required using iText.

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Why are the AcroFields in my document empty?

I have a PDF form with filled out fields. I can change the values and save them.
But when I try to read the AcroFields, they are empty.

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How to underline a portion of text in a text field?

I have an application that uses iText to fill PDF form fields.
One of these fields has some text with tags. I need the text enclosed in -tag to be underlined. How could I do that?

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How to check a check box?

I've tried so many different ways, but I can't get the check box to be checked!

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How to fill XFA form using iText without breaking usage rights?

If I choose the XML manually by clicking 'Import data' from Adobe Reader, form is filled properly, so I guess there is no error in the XML.

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How to tell iText which fields to flatten first?

How do I change the order on the page of these fields with iText?

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