Imports System.IO
Imports System.Runtime.InteropServices

Module Example
    <STAThread()> _
    Sub Main()

        Dim objApplication As SolidEdgeFramework.Application = Nothing
        Dim objPartDocument As SolidEdgePart.PartDocument = Nothing
        Dim objModels As SolidEdgePart.Models = Nothing
        Dim objToggleToDesigns As SolidEdgePart.ToggleToDesigns = Nothing
        Dim objToggleToDesign As SolidEdgePart.ToggleToDesign = Nothing

        Try
            OleMessageFilter.Register()

            objApplication = Marshal.GetActiveObject("SolidEdge.Application")
            objPartDocument = objApplication.ActiveDocument
            objModels = objPartDocument.Models
            objToggleToDesigns = objModels.ToggleToDesigns
            objToggleToDesign = objToggleToDesign.Item(1)
            objToggleToDesign.Delete()

        Catch ex As Exception
            Console.WriteLine(ex.Message)
        Finally
            OleMessageFilter.Revoke()
        End Try
    End Sub
End Module