Returns the number of sheets in a reference.
| Name | Type | Description |
| arg1 | ApiRange | Is a reference for which you want to know the number of sheets it contains. If omitted the number of sheets in the workbook containing the function is returned. |
builder.CreateFile("xlsx");
// Add more sheets
Api.AddSheet("Sheet2")
Api.AddSheet("Sheet3")
// Get the number of sheets
var oFunction = Api.GetWorksheetFunction();
var result = oFunction.SHEETS();
const oWorksheet = Api.GetActiveSheet();
oWorksheet.GetRange("C3").SetValue(result);
builder.SaveFile("xlsx", "SHEETS.xlsx");
builder.CloseFile();