Dot in AcroFormField Name (Textfield) freaks field about pdfsharp HOT 2 CLOSED

This is by convention as the PERIOD character is used for organizing fields into a field-hierarchy.
The Pdf-Reference states in chapter 12.7.3.2:

For a field that is the child of another field, the fully qualified name shall be formed by appending the child field’s partial
name to the parent’s fully qualified name, separated by a PERIOD (2Eh) as shown:
parent’s_full_name.child’s_partial_name

And

Because the PERIOD is used as a separator for fully qualified names, a partial name shall not contain a PERIOD character

In short, a PERIOD character (".") is not permitted in a field-name.
I'd suggest replacing the "." with something else.

from pdfsharp.

Thanks for the answer

from pdfsharp.