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Gets or sets whether hidden worksheets are exported when saving to HTML.
The default value is false.
public bool ExportHiddenWorksheet { get; set; }
Public Property ExportHiddenWorksheet As Boolean
HtmlSaveOptions options = new HtmlSaveOptions();
options.ExportHiddenWorksheet = true;
bool exportHiddenWorksheet = options.ExportHiddenWorksheet;
using MemoryStream stream = new MemoryStream();
workbook.Save(stream, options);