Get All External References for Drawing Example (VB.NET)

'-----------------------------------------
' Preconditions:
' 1. Read the SolidWorks Document Manager API
'    Getting Started topic and ensure that the
'    required DLLs are registered.
' 2. Copy and paste this module into a VB.NET
'    console application in Microsoft Visual Studio.
' 3. Substitute the name of your drawing document
'    for drawing_document_with_external_references.
' 4. Add the SolidWorks.Interop.swdocumentmgr.dll
'    reference to the project.
' 5. Substitute your_license_code with your
'    SolidWorks Document Manager license key.
' 6. Compile and run this program in Debug mode.
'
' Postconditions: Inspect the Immediate window.
'-----------------------------------------

Imports SolidWorks.Interop.swdocumentmgr
Module Module1

    Sub main()

        Const sLicenseKey As String = "your_license_code" 'Specify your license key
        Const sDocFileName As String = "drawing_document_with_external_references"

        Dim swClassFact As SwDMClassFactory
        Dim swDocMgr As SwDMApplication
        Dim swDoc As SwDMDocument13
        Dim swSearchOpt As SwDMSearchOption
        Dim nDocType As Long
        Dim nRetVal As Long
        Dim vDependArr As Object
        Dim vDepend As Object
        Dim vBrokenRefs As Object
        Dim vIsVirtuals As Object
        Dim vTimeStamps As Object

        ' Determine if document is a drawing
        If InStr(LCase(sDocFileName), "slddrw") > 0 Then
            nDocType = SwDmDocumentType.swDmDocumentDrawing
        Else
            ' Not a drawings file,
            nDocType = SwDmDocumentType.swDmDocumentUnknown
            ' so do not open
            Exit Sub
        End If

        swClassFact = CreateObject("SwDocumentMgr.SwDMClassFactory")
        swDocMgr = swClassFact.GetApplication(sLicenseKey)
        swSearchOpt = swDocMgr.GetSearchOptionObject
        swDoc = swDocMgr.GetDocument(sDocFileName, nDocType, False, nRetVal) : Debug.Assert(SwDmDocumentOpenError.swDmDocumentOpenErrorNone = nRetVal)

        Debug.Print("File = " & swDoc.FullName)
        vBrokenRefs = Nothing
        Dim brokenRef As SwDmReferenceStatus
        vIsVirtuals = Nothing
        Dim isVirtual As Boolean
        vTimeStamps = Nothing
        Dim timeStamp As Double
        vDependArr = swDoc.GetAllExternalReferences4(swSearchOpt, vBrokenRefs, vIsVirtuals, vTimeStamps) : If IsNothing(vDependArr) Then Exit Sub

        Debug.Print("External references")
        For Each vDepend In vDependArr
            Debug.Print("  " & vDepend)
        Next vDepend
        Debug.Print("Reference statuses as defined in swDmReferenceStatus")
        For Each brokenRef In vBrokenRefs
            Debug.Print("  " & brokenRef)
        Next brokenRef
        Debug.Print("Virtual component?")
        For Each isVirtual In vIsVirtuals
            Debug.Print("  " & isVirtual)
        Next isVirtual
        Debug.Print("Timestamps")
        For Each timeStamp In vTimeStamps
            Debug.Print("  " & timeStamp)
        Next timeStamp
    End Sub
End Module