NPOI.XSSF.UserModel.XSSFWorkbook.GetForceFormulaRecalculation C# (CSharp) Method

        public bool GetForceFormulaRecalculation()
        {
            CT_Workbook ctWorkbook = GetCTWorkbook();
            CT_CalcPr calcPr = ctWorkbook.calcPr;
            return calcPr != null && calcPr.calcId != 0;
        }
        public void SetActiveSheet(int sheetIndex)

        public void TestRecalcId()
        {
            XSSFWorkbook wb = new XSSFWorkbook();

            Assert.IsFalse(wb.GetForceFormulaRecalculation());
            CT_Workbook ctWorkbook = wb.GetCTWorkbook();

            Assert.IsFalse(ctWorkbook.IsSetCalcPr());

            wb.SetForceFormulaRecalculation(true); // resets the EngineId flag to zero

            CT_CalcPr calcPr = ctWorkbook.calcPr;

            Assert.IsNotNull(calcPr);
            Assert.AreEqual(0, (int)calcPr.calcId);

            calcPr.calcId = 100;
            Assert.IsTrue(wb.GetForceFormulaRecalculation());

            wb.SetForceFormulaRecalculation(true); // resets the EngineId flag to zero
            Assert.AreEqual(0, (int)calcPr.calcId);
            Assert.IsFalse(wb.GetForceFormulaRecalculation());

            // calcMode="manual" is unset when forceFormulaRecalculation=true
            calcPr.calcMode = (ST_CalcMode.manual);
            wb.SetForceFormulaRecalculation(true);
            Assert.AreEqual(ST_CalcMode.auto, calcPr.calcMode);
        }