Please read more about the password and permissions security in the IsEncrypted method and in the SetPassword method.
'DeclarationPublic Function IsOwnerPassword() As Boolean
public bool IsOwnerPassword()
public function IsOwnerPassword(): Boolean; public function IsOwnerPassword() : boolean;public: bool IsOwnerPassword();
public: bool IsOwnerPassword();
It is recommend to use the GetStat method to identify the specific reason for the method's failure, if any.
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();