Sets or returns the percentage of standard size by which the worksheet will be magnified or reduced. Set this property to a value between 10 and 400.

 public int ZoomPercentage{ get; set; }
Public Property ZoomPercentage() As Integer

          //--- Get Zoom
          int zoom = ws.ZoomPercentage;

          //--- Set Zoom
          ws.ZoomPercentage = 50;
        

          '--- Get Zoom
          Dim zoom As Integer = ws.ZoomPercentage

          '--- Set Zoom
          ws.ZoomPercentage = 50