XlOper Class

A static class that implements methods to create arithmetic and logical operations in the IXlFormulaParameter expression.

Namespace : DevExpress.Export.Xl

Assembly : DevExpress.Printing.v25.2.Core.dll

NuGet Package : DevExpress.Printing.Core

Declaration

C#
VB.NET

csharp

public static class XlOper

Public Module XlOper

Example

This code snippet creates an IXlFormulaParameter expression from a combination of constants, operators and functions. Constants are transformed into the IXlFormulaParameter objects with the XlFunc.Param method. Operators are static methods of the XlOper object and functions are static methods of the XlFunc object.

When an expression is created, the IXlCell.SetFormula method is used to enter expression into a worksheet cell as the cell formula.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/excel-export-api-examples

FormulaActions.cs
FormulaActions.vb

csharp

// Create the total row using IXlFormulaParameter.
using (IXlRow row = sheet.CreateRow()) {
    row.SkipCells(2);
    using (IXlCell cell = row.CreateCell()) {
        cell.Value = "Total:";
        cell.ApplyFormatting(totalRowFormatting);
    }
    using (IXlCell cell = row.CreateCell()) {
        // Set the formula to calculate the total amount plus 10 handling fee.
        // =SUM($D$2:$D$5)+10
        IXlFormulaParameter const10 = XlFunc.Param(10);
        IXlFormulaParameter sumAmountFunction = XlFunc.Sum(XlCellRange.FromLTRB(cell.ColumnIndex, 1, cell.ColumnIndex, row.RowIndex - 1).AsAbsolute());
        cell.SetFormula(XlOper.Add(sumAmountFunction, const10));
        cell.ApplyFormatting(totalRowFormatting);
    }
}

' Create the total row using IXlFormulaParameter.
Using row As IXlRow = sheet.CreateRow()
    row.SkipCells(2)
    Using cell As IXlCell = row.CreateCell()
        cell.Value = "Total:"
        cell.ApplyFormatting(totalRowFormatting)
    End Using
    Using cell As IXlCell = row.CreateCell()
        ' Set the formula to calculate the total amount plus 10 handling fee.
        ' =SUM($D$2:$D$5)+10
        Dim const10 As IXlFormulaParameter = XlFunc.Param(10)
        Dim sumAmountFunction As IXlFormulaParameter = XlFunc.Sum(XlCellRange.FromLTRB(cell.ColumnIndex, 1, cell.ColumnIndex, row.RowIndex - 1).AsAbsolute())
        cell.SetFormula(XlOper.Add(sumAmountFunction, const10))
        cell.ApplyFormatting(totalRowFormatting)
    End Using
End Using

Inheritance

Object XlOper