Hello,

using the Document manager API I have successfully created a vb.net console app that extracts the PNG preview using the GetPreviewPNGBitmap() method.

but...

when I use this same method in a asp.net app, I get the following when I call the method:

Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED))

I see the warnings in the API help documentation saying that this function may not work with ASP.NET, and sure enough I can't get it to work.

has anyone run up against this problem? Any suggestions?

thanks in advance....code below:


Dim sDocFileName As String = "C:\Documents and Settings\bcavan\My Documents\Visual Studio 2008\WebSites\WebSite1\Upload\Extraction\037-001-876.sldprt"

Dim sExtractDir As String = "C:\Documents and Settings\bcavan\My Documents\Visual Studio 2008\WebSites\WebSite1\Upload\Extraction"

Dim swClassFact As SwDMClassFactory

Dim swDocMgr As SwDMApplication

Dim swDoc As SwDMDocument10

Dim swCfgMgr As SwDMConfigurationMgr

Dim vCfgNameArr As Object

Dim vCfgName As Object

Dim swCfg As SwDMConfiguration7

Dim pPreview As IPictureDisp

Dim pPreview2 As IPictureDisp

Dim nDocType As Long

Dim nRetVal As Long

Dim i As Long

Dim bRet As Boolean

nDocType = SwDmDocumentType.swDmDocumentPart

swClassFact = CreateObject("SwDocumentMgr.SwDMClassFactory")

swDocMgr = swClassFact.GetApplication("my code")

swDoc = swDocMgr.GetDocument(sDocFileName, nDocType, False, nRetVal)

swDoc = CType(swDoc, SwDMDocument10)

pPreview2 = swDoc.GetPreviewPNGBitmap(nRetVal) ' ERROR OCCURS HERE

Dim myImage2 As Image = IPictureToImage(pPreview2)

Dim myFilename = Path.GetFileNameWithoutExtension(swDoc.FullName)

myImage2.Save(sExtractDir & "\" & myFilename & ".PNG")