Copy content of Excel attachment in Outlook VBA without saving the file - excel

Question

I get 50 mails with Excel sheets per day. I want to add the first line of each Excel sheet to an existing Excel sheet located on my computer.
I know how to save a file from an email, and then access the first line. I would like to directly access it, without having to save the file.
Something like this:
Sub Merge_Reports(itm As Outlook.MailItem)
Dim wb_path As String
Dim app_master As Object
Dim wb_master As Object
Dim ws_master As Object
Dim objAtt As Outlook.Attachment
Dim ws_email As Object
Dim content As String
wb_path = "\\swi56prof01\UserData$\heinreca\Documents\Outlook-Dateien\AllData.xlsx"
Set app_master = CreateObject("Excel.Application")
Set wb_master = app_master.Workbooks.Open(wb_path)
Set ws_master = wb_master.Sheets(1)
For Each objAtt In itm.Attachments
Set ws_email = objAtt.Sheets(1)
content = ws_email.Cells("A1")
ws_master.Cells("A1") = content
End Sub
I am struggling with ws_email = objAtt.Sheets(1). I get the error
object doesn't support this property or method
I tried this instead of the line that results in the error.
Set app_email = CreateObject("Excel.Application")
Set wb_email = app_email.Workbooks.Open(objAtt)
Set ws_email = wb_email.Sheets(1)
I don't know what objAtt is in terms of data type and how to address the worksheet, so that I can copy the first line from it.
I found Copy Contents of Outlook Attachment and that I have to save the file before accessing it. Is there no other way?

Answer 1

There is no way to access the workbook without saving it to the disk. After saving the attached file to the disk you can use the same code:
Set wb_master = app_master.Workbooks.Open(wb_path)
Set ws_master = wb_master.Sheets(1)
where wb_path is the file path of your saved attachment (Excel file).
The Attachment.SaveAsFile method saves the attachment to the specified path. For example:
Sub SaveAttachment()
Dim myInspector As Outlook.Inspector
Dim myItem As Outlook.MailItem
Dim myAttachments As Outlook.Attachments
Set myInspector = Application.ActiveInspector
If Not TypeName(myInspector) = "Nothing" Then
If TypeName(myInspector.CurrentItem) = "MailItem" Then
Set myItem = myInspector.CurrentItem
Set myAttachments = myItem.Attachments
'Prompt the user for confirmation
Dim strPrompt As String
strPrompt = "Are you sure you want to save the first attachment in the current item to the Documents folder? If a file with the same name already exists in the destination folder, it will be overwritten with this copy of the file."
If MsgBox(strPrompt, vbYesNo + vbQuestion) = vbYes Then
myAttachments.Item(1).SaveAsFile Environ("HOMEPATH") & "\My Documents\" & _
myAttachments.Item(1).DisplayName
End If
Else
MsgBox "The item is of the wrong type."
End If
End If
End Sub