I am developing an application to customize an AutoCAD using VB.NET. Earlier I develop such type of application using AutoCAD VBA but this time I use VB.NET to make a separate windows based application. Where there is a need to read the object data attached on the entity. I am successfully read the object’s object data from the AutoCAD entity but after that when I try to modify that object it displays an error message that “Object is open for read”. I think it is not releasing the object after initialization for read object data.
Here is my code that I used to read the object data:
Public Function acdGetObjectDataObjId(ByRef acdObject As AcadObject) As Long
Dim AcadMap As AcadMap
Dim ODfdfs As ODFieldDefs
Dim ODrcs As ODRecords
Dim boolVal As Boolean
Dim acdActiveDocument As AcadDocument
Try
'Open AutoCAD application if not opened
If acdApplication Is Nothing Then
acdApplication = acdOpenAutoCADApplication()
End If
'Get the active document
acdActiveDocument = acdApplication.ActiveDocument
AcadMap = CType(acdActiveDocument.Application.GetInterfaceObject("AutocadMAP.Application.3"), AcadMap)
'Get object data table
ODfdfs = AcadMap.Projects.Item(0).MapUtil.NewODFieldDefs
ODrcs = AcadMap.Projects.Item(acdActiveDocument).ODTables.Item("GISINW").GetODRecords
boolVal = ODrcs.Init(acdObject, False, False)
'Return green ObjectID
acdGetObjectDataObjId = ODrcs.Record.Item("ID_GISINW").Value
Catch ex As Exception
'Return 0 if any error occured
acdGetObjectDataObjId = 0
Finally
ODrcs = Nothing
ODfdfs = Nothing
AcadMap = Nothing
End Try
End Function
Please guide me where I am doing wrong. I look forward to hear from you.
Buddhi Prasad Koirala
Software Engineer
DHV Global Engineering Center BV
