XEncryption CanChange Property. Whether a user can modify the document. ABCpdf .NET PDF Library. From ABCpdf .net previous page next page CanChange Property Type Default Value Read Only Description [C#] bool [Visual Basic] Boolean true No Whether a user can modify the document. Notes This property determines if people who supply the user password can change the document. Changing is defined as modifying the document in any way other than those controlled by the CanEdit, CanFillForms or CanAssemble properties. This property is only applied if the Type is set to 1 or higher. Example See the Doc.Encryption property. previous page start next page