IsOwnerPassword Method (GdPicturePDF)

In This Topic

Returns if the password provided with the SetPassword method was the owner password. You only need to provide the correct password once when using the SetPassword method. Any other subsequent attempt to set a password using this method will fail.

Please read more about the password and permissions security in the IsEncrypted method and in the SetPassword method.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Function IsOwnerPassword() As Boolean

public bool IsOwnerPassword()

public function IsOwnerPassword(): Boolean;

public function IsOwnerPassword() : boolean;

public: bool IsOwnerPassword();

public:
bool IsOwnerPassword();

Return Value

true if the password provided with the SetPassword method is the owner password, otherwise false. The GetStat method can be subsequently used to determine if this method has been successful.

Remarks

This method is only allowed for use with non-encrypted documents.

It is recommend to use the GetStat method to identify the specific reason for the method's failure, if any.

Example

How to check if you have provided the correct owner password.

VB.NET
C#

Dim caption As String = "Example: IsOwnerPassword"
Dim gdpicturePDF As New GdPicturePDF()
'Please see the example in the SetPassword method for creating this file.
If gdpicturePDF.LoadFromFile("encrypted.pdf", False) = GdPictureStatus.OK Then
    Dim PassOk As Boolean = False
    Dim isEncrypted As Boolean = gdpicturePDF.IsEncrypted()
    Dim status As GdPictureStatus = gdpicturePDF.GetStat()
    If status = GdPictureStatus.OK Then
        If isEncrypted Then
            If gdpicturePDF.SetPassword("") = GdPictureStatus.OK Then
                PassOk = True
            Else
            'Try this call also with the "owner" password.
                If gdpicturePDF.SetPassword("user") = GdPictureStatus.OK Then
                    PassOk = True
                    If PassOk = True Then
                        Dim isOwner As Boolean = gdpicturePDF.IsOwnerPassword()
                        status = gdpicturePDF.GetStat()
                        If status = GdPictureStatus.OK Then
                            If isOwner Then
                                MessageBox.Show("The password you have provided is the owner password.", caption)
                            Else
                                MessageBox.Show("The password you have provided is the user password.", caption)
                            End If
                        End If
                    End If
                End If
            End If
            If PassOk = False Then
                MessageBox.Show("You have provided a wrong password.", caption)
            End If
        Else
            MessageBox.Show("This PDF is not encrypted.", caption)
        End If
    End If
Else
    MessageBox.Show("The file can't be loaded.", caption)
End If
gdpicturePDF.Dispose()

string caption = "Example: IsOwnerPassword";
GdPicturePDF gdpicturePDF = new GdPicturePDF();
//Please see the example in the SetPassword method for creating this file.
if (gdpicturePDF.LoadFromFile("encrypted.pdf", false) == GdPictureStatus.OK)
{
    bool PassOk = false;
    bool isEncrypted = gdpicturePDF.IsEncrypted();
    GdPictureStatus status = gdpicturePDF.GetStat();
    if (status == GdPictureStatus.OK)
    {
        if (isEncrypted)
        {
            if (gdpicturePDF.SetPassword("") == GdPictureStatus.OK)
            {
                PassOk = true;
            }
            else
            {
                //Try this call also with the "owner" password.
                if (gdpicturePDF.SetPassword("user") == GdPictureStatus.OK)
                {
                    PassOk = true;
                    if (PassOk == true)
                    {
                        bool isOwner = gdpicturePDF.IsOwnerPassword();
                        status = gdpicturePDF.GetStat();
                        if (status == GdPictureStatus.OK)
                        {
                            if (isOwner)
                            {
                                MessageBox.Show("The password you have provided is the owner password.", caption);
                            }
                            else
                            {
                                MessageBox.Show("The password you have provided is the user password.", caption);
                            }
                        }
                    }
                }
            }
            if (PassOk == false)
            {
                MessageBox.Show("You have provided a wrong password.", caption);
            }
        }
        else
        {
            MessageBox.Show("This PDF is not encrypted.", caption);
        }
    }
}
else
{
    MessageBox.Show("The file can't be loaded.", caption);
}
gdpicturePDF.Dispose();

Reference

GdPicturePDF Class
GdPicturePDF Members
IsEncrypted Method
SetPassword Method
GetEncryptionMode Method
GetEncryptionScheme Method
GetRight Method
LoadFromFile Method
SaveToFile(String) Method
LoadFromStream Method
SaveToStream(Stream) Method