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Gets or sets the visibility state of the worksheet.
The returned value indicates whether the worksheet is currently shown, hidden, or very hidden.
Visibility Visible { get; set; }
Property Visible As Visibility
IWorksheet detailSheet = workbook.Worksheets.Add();
detailSheet.Name = "Detail";
detailSheet.Visible = Visibility.Hidden;
Visibility visibility = detailSheet.Visible;