DSOleFile.dll use in VB.NET

  • Thread starter Thread starter Steve Lang
  • Start date Start date
S

Steve Lang

Hi all,

I am trying to use the DSOleFile.dll in my VB.NET application (that I am
converting from VB6) to extract some property data from a Word document
before the application processes the file. The key feature of the dll is
that it allows the data to be extracted without the document opening in
Word; I successfully used it in VB6 without a problem.

Under .NET, however, after I use a function that calls the dll, the function
appears to keep the file open, so my app can't delete it as it is supposed
to. The code is below:

Private oFilePropReader As DSOleFile.PropertyReader

Private oDocProp As DSOleFile.DocumentProperties

'^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Public Function getLastEditProperty(ByVal strDoc As String) As String

Dim oFilePropReader As New DSOleFile.PropertyReader

oDocProp = oFilePropReader.GetDocumentProperties(cXFer & strDoc & ".doc")

getLastEditProperty = oDocProp.LastEditedBy

oDocProp = Nothing

oFilePropReader = Nothing

End Function


Anybody have any ideas on how to force a release? Am fairly new to .NET...
is there something I am missing?

TIA and have a great day!

Steve Lang
 
Hi,

System.Runtime.InteropServices.Marshal.ReleaseComObject(oDocProp)

System.Runtime.InteropServices.Marshal.ReleaseComObject(oFilePropReader)



Ken
 
Thanks Ken - works like a champ!

Steve


Ken Tucker said:
Hi,

System.Runtime.InteropServices.Marshal.ReleaseComObject(oDocProp)

System.Runtime.InteropServices.Marshal.ReleaseComObject(oFilePropReader)



Ken
Click to expand...
 
Hi Ken,

Thanks! The code works on my development machine. However, when I try to run
it on the target computer, I am getting errors regarding the DSOLEFile.dll.
Specifically: "The format of the file 'Interop.DSOleFile.dll' is invalid."
I don't understand what the difference is between the development computer
where I wrote the code and it works, and the target machine where it NEEDS
to work! I registered the dll successfully, so I don't think that is the
issue. Any ideas anyone?

TIA,

Steve
 
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