ExcelFile.OptionsMultithreadRecalc Property
Number of threads that can be used at the same time by Excel when recalculating. Set it to 0 to disable multithread recalculation, and to -1 to let Excel decide the best number of threads to use. The maximum value for this property is 1024.
This option only applies to Excel 2007 or newer.
Syntax
Namespace: FlexCel.Core
public abstract Int32 OptionsMultithreadRecalc { get; set; }