I am trying to add the file attachment module/functionality to my BO. I reviewed the tutorial and it worked fine, but in my BO it doesn't want to work.

What I have is a class called cFiles which is a stripped down version of the Portfolio class.

 <DefaultClassOptions()> _

Public Class cFiles

    Inherits FileAttachmentBase

    Public Sub New(ByVal session As Session)

        MyBase.New(session)

    End Sub

     Public Overrides Sub AfterConstruction()

        MyBase.AfterConstruction()

        fDocumentType = DocumentType.Unknown

    End Sub

     Private fDocumentType As DocumentType

    Public Property DocumentType() As DocumentType

        Get

            Return fDocumentType

        End Get

        Set(ByVal value As DocumentType)

            SetPropertyValue("DocumentType", fDocumentType, value)

        End Set

    End Property

End Class

Then I have my BO which has a the following property:

    Private fFileList As XPCollection(Of cFiles)

    Public Property FileList() As XPCollection(Of cFiles)

        Get

            Return fFileList

        End Get

        Set(ByVal value As XPCollection(Of cFiles))

            SetPropertyValue("FileList", fFileList, value)

        End Set

    End Property

 

The Files list view shows up in the BO's detail view, but it (and its toolbar) are disabled. So the questions are: Am I using this correctly and why is it disabled? 

 

Thanks. 

 I think that I figured it out. Please let me know if this is not the expected use of the File Attachment module.

I added a line in the property definition (under the Get) that reads:

If fFileList Is Nothing then fFileList = New XPCollection(of cFiles)(Session)

 

Thanks

Hi,

At first glance, I am not sure of the fix you found, so I think that a small sample project demonstrating what actually doesn't work in your solution, but works in our demos ,will give us more chances

to help you.

Looking forward to your sample...

 Hmm... Can't seem to attach a project to the message, I get errors when uploading the file.....

Anyway. The basic idea is that I want a to create a class that is similar to the Portfolio Class (File, DocumentType, etc), but I want to connect it to multiple BOs (Purchasing, Inventory, Jobs, Sales, etc). So, I think that the standard 'Association' attribute will not work as there is not a 1 to 1 relationship between the classes. In each of the BOs I would need a collection of Portfolio Classes.

Thanks for your help

 

Hi Bill,

Have you tried to zip the project for the attachment ? I find that only small zipped attachments make it to the forum.

Regards,

 I did, but still could not upload. The upload (of course) is a minor inconvenience to my problem.

The problem is that I am unsure how to create a file management class for multiple business objects.

Thanks

Hi,

Please create a new question in the Support Center, and upload your sample there. After that, we will continue our discussion.