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Gets or sets whether the specified table style is shown as available in the pivot styles gallery.
bool ShowAsAvailablePivotStyle { get; set; }
Property ShowAsAvailablePivotStyle As Boolean
ITableStyle customStyle = workbook.TableStyles.Add("PivotStyle");
customStyle.ShowAsAvailablePivotStyle = true;
bool available = customStyle.ShowAsAvailablePivotStyle;