.net,vsto,outlook-addin , Outlook AddIn `PropertyPage` not showing up in Outlook Options


Outlook AddIn `PropertyPage` not showing up in Outlook Options

Question:

Tag: .net,vsto,outlook-addin

I have an Outlook 2007 Add-In project which I'm trying to add a PropertyPage to. I've implemented a OptionsPage class (which implements PropertyPage) which is added during the Application.OptionsPagesAdd event.

Public Class OptionsPage
    Implements Microsoft.Office.Interop.Outlook.PropertyPage

    Private Sub Me_Load(sender As Object, e As System.EventArgs) Handles Me.Load
        System.Windows.Forms.MessageBox.Show("Test Options Loaded")
    End Sub

    Public Sub Apply() Implements Microsoft.Office.Interop.Outlook.PropertyPage.Apply
        ' todo
    End Sub

    Public ReadOnly Property Dirty As Boolean Implements Microsoft.Office.Interop.Outlook.PropertyPage.Dirty
        Get
           ' todo
            Return False
        End Get
    End Property

    Public Sub GetPageInfo(ByRef HelpFile As String, ByRef HelpContext As Integer) Implements Microsoft.Office.Interop.Outlook.PropertyPage.GetPageInfo
        ' todo
    End Sub

End Class
Public Class ThisAddIn

    Private Sub Application_OptionsPagesAdd(pages As Microsoft.Office.Interop.Outlook.PropertyPages) Handles Application.OptionsPagesAdd
        pages.Add(New OptionsPage(), "Test Options")
    End Sub

End Class

Can anyone advise why I can't get the OptionsPage to show up within Outlook's Options, even though I don't get any errors or runtime exceptions?


Answer:

It turns out you need to ensure your class (that implements PropertyPage) has its ComVisible attribute to True in order for it to show up in Outlook - found in this thread

<System.Runtime.InteropServices.ComVisible(True)>
Public Class OptionsPage
    Implements Microsoft.Office.Interop.Outlook.PropertyPage
End Class

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