# XlsxWriteOptions ```csharp public sealed class XlsxWriteOptions ``` Namespace `SharpCell.Xlsx` · package `SharpCell.Xlsx` Options for [XlsxWriter](SharpCell.Xlsx.XlsxWriter.md). ## Constructors ### XlsxWriteOptions() ```csharp public XlsxWriteOptions() ``` The defaults: a save is refused when some formulas cannot be calculated. ## Properties ### KeepUncalculated ```csharp public bool KeepUncalculated { get; init; } ``` What to do with formulas SharpCell cannot calculate, such as calls of functions it does not know or links to other workbooks. False (the default) refuses to save with an [XlsxWriteException](SharpCell.Xlsx.XlsxWriteException.md). True keeps the result Excel saved for them and marks the file so that Excel recalculates every formula when it opens it; until then, cells that read such a formula show what SharpCell calculated for them.