Imports System.Runtime.InteropServices

Public Class Form1

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button2.Click
        Dim objApplication As RevisionManager.Application = Nothing
        Dim objDocument As RevisionManager.Document = Nothing

        Try
            ' Start Revision Manager.
            objApplication = New RevisionManager.Application

            objApplication.Visible = True
            objDocument = objApplication.OpenFileInRevisionManager("C:\TestFiles\seaacfa.asm")
        Catch ex As Exception
            ' Write any errors to console.
            Console.WriteLine(ex.Message)
        Finally
            ' Release COM Objects.
            If Not (objDocument Is Nothing) Then
                Marshal.ReleaseComObject(objDocument)
                objDocument = Nothing
            End If
            If Not (objApplication Is Nothing) Then
                objApplication.Quit()
                Marshal.ReleaseComObject(objApplication)
                objApplication = Nothing
            End If
        End Try

    End Sub
End Class