Why

In Sheet Format1

    GetFirstView  →  GetFirstDisplayDimension→ ubound(GetAnnotations)=0

Why

in Sheet1 view

    GetFirstView  →  GetFirstDisplayDimension → ubound(GetAnnotations)>0

In Sheet Format1, GetFirstView  →  GetFirstDisplayDimension5 → ubound(GetAnnotations)=0

the code is

Private Sub ll()

   Dim SwApp As SldWorks.SldWorks, SwModel As ModelDoc2

      Set SwApp = Application.SldWorks

      Set SwModel = SwApp.ActiveDoc

   Dim SwSelMgr As SelectionMgr

      Set SwSelMgr = SwModel.SelectionManager

   Dim SwDraw As DrawingDoc, SwView As View

      Set SwDraw = SwModel

      Set SwView = SwDraw.GetFirstView

   Dim SwDispDim As DisplayDimension, SwDim As Dimension

      Set SwDispDim = SwView.GetFirstDisplayDimension5

      'Debug.Print SwView.GetDimensionCount4

      Do While Not SwDispDim Is Nothing

         Set SwDim = SwDispDim.GetDimension

         Debug.Print SwDim.FullName

         Set SwDispDim = SwDispDim.GetNext5

      Loop

      '

   Dim SwAnn As Annotation

      ss = SwView.GetAnnotations

      For ii = 0 To UBound(ss)

         Set SwAnn = ss(ii)

         Debug.Print SwAnn.GetName

      Next ii

      ''

      'tmp = SwModel.Extension.SelectByID2("Sheet")

      Debug.Print SwView.GetName2

End Sub

GetFirstView  →  GetFirstDisplayDimension → ubound(GetAnnotations)>0

      Set SwView = SwDraw.GetFirstView

   Dim SwDispDim As DisplayDimension, SwDim As Dimension

      Set SwDispDim = SwView.GetFirstDisplayDimension

   Dim SwAnn As Annotation

      ss = SwView.GetAnnotations

      For ii = 0 To UBound(ss)

         Set SwAnn = ss(ii)

         Debug.Print SwAnn.GetName

      Next ii

***************************

''

Private Sub ll1()

   Dim SwApp As SldWorks.SldWorks, SwModel As ModelDoc2

       Set SwApp = Application.SldWorks

       Set SwModel = SwApp.ActiveDoc

   Dim SwSelMgr As SelectionMgr

       Set SwSelMgr = SwModel.SelectionManager

   Dim SwDraw As DrawingDoc, tmp, SwSheet As Sheet

       tmp = SwModel.Extension.SelectByID2("Sheet1", "DRAWINGVIEW", 0, 0, 0, False, 0, Nothing, 0)

       Stop

       tmp = SwModel.Extension.SelectByID2("Sheet Format1", "SHEET", 0, 0, 0, False, 0, Nothing, 0)

       tmp = SwModel.Extension.SelectByID2("Sheet1", "SHEET", 0, 0, 0, False, 0, Nothing, 0)

       Set SwSheet = SwSelMgr.GetSelectedObject5(1)

   Dim S1, S2

       With SwSheet

         S1 = .GetTemplateName

         Debug.Print .GetSheetFormatName

         S2 = .CustomPropertyView

         Debug.Print .CustomPropertyView

         Stop

       End With

       Debug.Print SwSheet.GetName

       Stop

End Sub