Gets a value that indicate whether a PDF file is encrypted.
public static bool IsEncrypted(
Public Shared Function IsEncrypted( _
ByVal fileName As String _
) As Boolean
static bool IsEncrypted(
The name of the PDF file.
true if the PDF file is encrypted; otherwise, it is false.
This method checks if the PDF file has been encrypted and protected with a password. If this is the case, then you must create a PDFFile object (or set the Password property) to the correct file before you can use the other methods of this object.
To load PDF files, you generally perform this:
Call IsEncrypted to determine whether the file is encrypted (password protected), if so, instruct the user for the password to use with this PDF file.
Finally construct a PDFFile object with the filename and password (if any) and call its methods.
For an example, refer to PDFFile.
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