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();

Example

How to check if you have provided the correct owner password. 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
SetPassword Method
SetPassword Method
IsEncrypted Method
SetPassword Method
GetStat Method
SetPassword Method
GetStat Method
IsEncrypted Method
SetPassword Method
GetEncryptionMode Method
GetEncryptionScheme Method
GetRight Method
LoadFromFile Method
SaveToFile(String) Method
LoadFromStream Method
SaveToStream(Stream) Method