When we try to generate the viewer cache for the attached test email (from Microsoft Office) ViewerHtmlHandler.GetPages() throws ‘System.ArgumentException’ with Additional information: Please provide file name with extension e.g. document.doc
email with email attachment.zip (22.1 KB)
The email contains a single attachment which is another email. The attachment doesn’t have a file type because the attached email has no extension - see the contents of the Attachment object returned from ViewerHtmlHandler.GetDocumentInfo():
| - | attachment | {GroupDocs.Viewer.Domain.Attachment} | GroupDocs.Viewer.Domain.AttachmentBase {GroupDocs.Viewer.Domain.Attachment} | |
|---|---|---|---|---|
| DocumentType | “Unknown” | string | ||
| DocumentTypeFormat | “Unknown” | string | ||
| Extension | “” | string | ||
| FileType | “Undefined” | string | ||
| ID | “I am the attached email” | string | ||
| Name | “I am the attached email” | string | ||
| Size | 42600 | long | ||
| SourceDocumentGuid | “A4464.C1.email with email attachment.msg” | string |
This is with .NET GroupDocs.Viewer.dll version 18.10.
I was the ViewerHtmlHandler.GetDocumentInfo() to be able to detect that the attachment is an email (rather than DocumentType=Unknown). This attachment was added within Microsoft Office by dragging the second email into the email editor. Outlook only adds a .msg extension when you save an email - not when you attach an email to an email without saving it first.
Please advise on how to get the viewer to handle this situation.
Thanks,
Darryl.