IsEncrypted Method

public static bool IsEncrypted( 
   string fileName
)

'Declaration
 
Public Shared Function IsEncrypted( _
   ByVal fileName As String _
) As Boolean

'Usage
 
Dim fileName As String
Dim value As Boolean
 
value = PDFFile.IsEncrypted(fileName)

public:
static bool IsEncrypted( 
   String^ fileName
) 

Parameters

fileName

The name of the PDF file.

Return Value

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 perfrom this:

1. Call GetPDFFileType with pdfTypesOnly set to true and check if the return value is not PDFFileType.Unknown meaning a valid PDF file of any version.

2. Call IsEncrypted to check if the file is encrypted (password protected), if so, instruct the user for the password to use with this PDF file.

3. Finally construct a PDFFile object with the file name and password (if any) and call its methods.

For an example, refer to PDFFile.

Target Platforms

Reference

PDFFile Class
PDFFile Members