Copy and Paste in C#

BrendanDwyer — Thu, 10 Oct 2013 16:57:59 GMT

I'm creating a new copy/paste tool in c# to copy features in a feature class that have attachments (the stock copy/paste doesn't copy over the attachments).

I'm using this page for guidance. Here is my code.

IAttachment attachment = toolExtension.copyEnumAttachment.Next();
                    while (attachment != null)
                    {

                        IMemoryBlobStream currAttachData = new MemoryBlobStreamClass();
                        currAttachData = attachment.Data;
                        m_attachmentManager.AddAttachment(newFeature.OID, new AttachmentClass { ContentType = attachment.ContentType, Data = currAttachData, Name = attachment.Name });
                        attachment = toolExtension.copyEnumAttachment.Next();
                    }

It will create an attachment but there doesn't appear to be any data associated with it. You can see it listed in the attachment manager, but you can't open it and you can't save it to disk. I was creating a new AttachmentClass object, then passing it to the AddAttachment method. When I debugged it, there was an error stating that the attachment table didn't have a Global ID field (even though it did) and the GlobalID property for the new AttachmentClass was blank. When I open the attachment table (where the blobs are stored) I can see the GlobalID field and it's populated.

I'm doing all of this in an edit session. Not sure if the problem is with the GlobalIDs or if I'm not actually passing the data to the new attachment.

Any help would be appreciated.

UPDATE: The error when I create the attachment class looks like this. When you mouse over the GlobalID field, instead of the global id, is says:

"GlobalID = 'newFeatureAttachment.GlobalID' threw an exception of type 'System.Runtime.InteropServices.COMException'"

Then when you mouse over that text, is pops up with:"{System.Runtime.InteropServices.ExternalException} = {"The table does not have a Global ID Field."}"

Re: Copy and Paste in C#

BrendanDwyer — Fri, 11 Oct 2013 15:55:11 GMT

Figured it out. I called the editor.stopOperation method before adding the attachments. Calling it after adding makes it allllllllll good.

btw I'm going to mark this as answered. Not sure if it's kosher to answer your own questions, but I want to identify that the issue is resolved.

topic Copy and Paste in C# in ArcObjects SDK Questions

Copy and Paste in C#

Re: Copy and Paste in C#