Imports System.Runtime.InteropServices
Public Class DimensionAutoArrange

    Private Sub btnDimensionAutoArrange_Click(sender As System.Object, e As System.EventArgs) Handles btnDimensionAutoArrange.Click
        Dim objApplication As SolidEdgeFramework.Application = Nothing
        Dim ObjDraftDocument As SolidEdgeDraft.DraftDocument = Nothing
        Dim objSheet As SolidEdgeDraft.Sheet = Nothing
        Dim objDrawingViews As SolidEdgeDraft.DrawingViews = Nothing
        Dim objDrawingView As SolidEdgeDraft.DrawingView = Nothing
        Dim objType As Type = Nothing

        Try

            objApplication = Marshal.GetActiveObject("SolidEdge.Application")

            If objApplication Is Nothing Then
                ' Get the type from the Solid Edge ProgID
                objType = Type.GetTypeFromProgID("SolidEdge.Application")
                ' Start Solid Edge
                objApplication = Activator.CreateInstance(objType)
                ' Make Solid Edge visible
                objApplication.Visible = True
            End If

            ObjDraftDocument = objApplication.ActiveDocument

            'getting the Active Sheet object
            objSheet = ObjDraftDocument.ActiveSheet

            objDrawingViews = objSheet.DrawingViews
            objDrawingView = objDrawingViews(1)

            'Add dimensions to select set which are connected to Drawing View.
            objDrawingView.AddConnectedAnnotationsToSelectSet()

            'Arrange the dimensions in select set.
            objSheet.ArrangeDimensionsInSelectSet(1, False)

            If Not ObjDraftDocument Is Nothing Then
                ObjDraftDocument.Close(False)
                ObjDraftDocument = Nothing
            End If
        Catch ex As Exception
            MsgBox(ex.ToString)
        End Try
    End Sub

End Class