outlook crashes when opening an attachment

You dont have to save your mail item like you do above. Marshal.ReleaseComObject(oMailItem.Attachments) Īs per suggested, I would do it something like this. Marshal.ReleaseComObject(mailAttachments) If (newAttachment != null) Marshal.ReleaseComObject(newAttachment)

Attachment newAttachment = mailAttachments.Add(itemPath) Attachments mailAttachments = oMailItem.Attachments

I added try.catch to try to catch exception but it is never entered so I don't know what the error is.Īfter reading an article by Eugene Astafiev at, I modified my code above to release com objects and now it looks like this but the problem still persists public void SendAttachmentsClick() However, once this line is called for the very first attachments in the 2nd call, the whole VSTO/outlook just crashes. //returns strings representing paths to documents I want to attachĬALL 1: Calling SendAttachmentsClick() for the 1st time opens new email and attaches all attachments to it properly.ĬALL 2: If I click Cancel in this new email message and then call SendAttachmentsClick() again, I can trace execution up until call to oMailItemAttachments.Add(itemPath) above (I have break points in this code). OMailItem.BodyFormat = .OlBodyFormat.olFormatHTML MailItem oMailItem = (.OlItemType.olMailItem) I have following code public void SendAttachmentsClick()

Outlook crashes when opening an attachment