External application - open Document

[kv]

Hi,

I'm creating a batch application in Revit.
It should open some rvt's and do some checks on it.

I thought it was simple... but my code isn't working. I must be missing some basics..
I allways get a "Object not initialized" on the line mydoc = app.... Logical I think, but how should I initialize an app from within an IExternalApp ? (Not from a IExternalCommand !!)

Public Function OnStartUp(ByVal myApp As UIControlledApplication) As Autodesk.Revit.UI.Result Implements IExternalApplication.OnStartup
        Dim app As Autodesk.Revit.ApplicationServices.Application
        Dim myDoc As Document

        myDoc = app.OpenDocumentFile("c:\\Temp\\test.rvt")

        Return (Autodesk.Revit.UI.Result.Succeeded)
    End Function

Can someone help me ?

[Elizabeth Shulok]

I don't believe you can access documents in the OnStartup method. You need to get the document from the UIApplication class, which you can obtain from ExternalCommand calls or Events.