getting an error in fetching solidworks model info

Question

Actually I am trying to connect to solidworks through visual studio 2013.I am getting an error stating:" A first chance exception of type 'System.NullReferenceException' occurred in WindowsApplication1.exe / Object reference not set to an instance of an object" . Showing Documents as nothing because of which getting error in line "For Each Doc As ModelDoc2 In Documents".

Public Sub New()
    SwApp = New SldWorks.SldWorks

    Dim Documents As Object = SwApp.GetDocuments()

    For Each Doc As ModelDoc2 In Documents

        _observableModeldoc.Add(New Modeldocs(Doc.GetPathName, _SwApp))

    Next

End Sub

Can anyone please suggest any solution..?

Based on this, one should have Solidworks open with 1 document, for the code to work. Have you the app open? — shahkalpesh
– shahkalpesh, Commented Jun 21, 2014 at 19:12
What does SwApp.GetDocuments().Count return? Please note that I havent worked on Solidworks. — shahkalpesh
– shahkalpesh, Commented Jun 22, 2014 at 7:21
Actually by Dim Documents As Object = SwApp.GetDocuments(), we get document currently opened in solidworks. But I m getting value of Documents as nothing though i have document opened in solidworks. — Sushil Chaskar
– Sushil Chaskar, Commented Jun 22, 2014 at 9:10

Andrey.Dankevich · Accepted Answer · 2014-06-22 09:25:36Z

0

Check out this post from Artem Taturevich. If you write a standalone app (opposed to SW add-in or macro), then instead of

    SwApp = New SldWorks.SldWorks

you should use either of GetObject/CreateObject/Activator::CreateInstance functions

answered Jun 22, 2014 at 9:25

Andrey.Dankevich

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2 Comments

Sushil Chaskar Over a year ago

Used SwApp = GetObject(, "SldWorks.Application") instead of SwApp = New SldWorks.SldWorks.. Showing Error Stating : Unhandled exception of type Sysetm.Exception occured and Cannot create activeX component in line "Dim Documents As Object = SwApp.GetDocuments()"

Sushil Chaskar Over a year ago

Actually error is coming the line "Dim Documents As Object = SwApp.GetDocuments()" itself. Error is: Cannot create an activeX component

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