Excel Formulas in C#

VB C#

using IronXL;

WorkBook workbook = WorkBook.Load("test.xlsx");
WorkSheet worksheet = workbook.DefaultWorkSheet;

// Set Formulas
worksheet["A1"].Formula = "Sum(B8:C12)";
worksheet["B8"].Formula = "=C9/C11";
worksheet["G30"].Formula = "Max(C3:C7)";

// Force recalculate all formula values in all sheets.  
workbook.EvaluateAll();

// Get Formulas
// Get the formula's calculated value.  e.g. "52"
string formulaValue = worksheet["G30"].Value;

//Get the formula as a string. e.g. "Max(C3:C7)"
string formulaString = worksheet["G30"].Formula;

//Save your changes with updated formulas and calculated values.
workbook.Save();

Imports IronXL

Private workbook As WorkBook = WorkBook.Load("test.xlsx")
Private worksheet As WorkSheet = workbook.DefaultWorkSheet

' Set Formulas
Private worksheet("A1").Formula = "Sum(B8:C12)"
Private worksheet("B8").Formula = "=C9/C11"
Private worksheet("G30").Formula = "Max(C3:C7)"

' Force recalculate all formula values in all sheets.  
workbook.EvaluateAll()

' Get Formulas
' Get the formula's calculated value.  e.g. "52"
Dim formulaValue As String = worksheet("G30").Value

'Get the formula as a string. e.g. "Max(C3:C7)"
Dim formulaString As String = worksheet("G30").Formula

'Save your changes with updated formulas and calculated values.
workbook.Save()

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Excel Formulas in C#

Use IronXL to set ranges and retrieve desired cell values within that range. Available cell values include Sum, Avg, Max and Min)

A formula is an expression which calculates the value of a cell. Functions are predefined formulas and are already available in Excel.

IronXL is fairly unique in .Net Excel libraries in that it supports the full range of Excel formulas and can calculate formula values in real time.