infopath web form automatically encode decode attachments?

Question

infopath web form.

is there a way to automate the encoding / decoding of an attachment? 

scenario:

user click attachment control, attaches file, files is moved to a doc library.

currently, the user has to click another button to trigger the encoding process.

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Answer 1

You could do the encoding when they submit the form? Or you could set the event to encode/decode to when the attachment control "Changes" and not on the Button press.

Answer 2

Any updates on this?

Answer 3

You will have to use a VSTA InfoPath form with code-behind where in you can decode the attachment and upload it to a library on Changed event of the control.

http://blogs.msdn.com/b/infopath/archive/2007/02/07/using-the-events-manager-of-the-infopath-hosted-control.aspx

Answer 4

guru

have you tried what you posted?

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Answer 5

I have implemented downloading InfoPath attachments as zip files and validating user input in browser enabled InfoPath form using OnChanged event.

http://www.bizsupportonline.net/blog/2010/01/upload-document-sharepoint-infopath-form/

Answer 6

public void attachCtrl_Changed(object sender, XmlEventArgs e)
        {
            //Create an XmlNamespaceManager
            XmlNamespaceManager ns = this.NamespaceManager;

            //Create an XPathNavigator object for the Main data source
            XPathNavigator xnMain = this.MainDataSource.CreateNavigator();

            //Create an XPathNavigator object for the attachment node
            XPathNavigator xnAttNode = xnMain.SelectSingleNode("//my:attachCtrl", ns);

            //Obtain the text of the node.
            string theAttachment = xnAttNode.Value;
            if (theAttachment.Length > 0)
            {
                InfoPathAttachmentDecoder myDecoder = new InfoPathAttachmentDecoder(theAttachment);
                myDecoder.SaveAttachment(@"C:\Users\me\Desktop\test");
            }      
        }

The Changed event did the trick.  Thank you!

For reference: 

http://support.microsoft.com/kb/2517906

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