The simplest way to check for a form would be to see if the `PdfReader`'s `AcroForm` field is null:

    Dim HasForm = reader.AcroForm IsNot Nothing

**EDIT**

I don't have Adobe Reader laying around but I think that message is generated when usage rights aren't enabled on a form. You should be able to use:

    Dim CanUserSave = reader.HasUsageRights()

I'm trying to collect some metadata about pdf files on our server.  I'd like to know whether or not they are a form, and if so, if they can be saved or must be printed.  Does something like iTextSharp expose that kind of information?

Here's a code sample where I can 



    Private Sub GetPDFInfo(ByVal path As String)
        If File.Exists(path) Then
            Dim reader As New PdfReader(path)
            'sample metadata exposed
            Dim numberOfPages = reader.NumberOfPages

            'what to call to get form info?

        End If
    End Sub

**UPDATE**

Here's what I mean by being able to save or not:
![demo1](http://i.imgur.com/LecozqA.png)
![demo2](http://i.imgur.com/CFfBC9w.png)
I'm not sure where this information lives, but each form has some kind of indication of whether or not the form data can be saved locally.