Устанавливает формулу, для которой определено имя.
Пример
builder.CreateFile("xlsx");
var oWorksheet = Api.GetActiveSheet();
oWorksheet.GetRange("A1").SetValue("1");
oWorksheet.GetRange("B1").SetValue("2");
oWorksheet.GetRange("C1").SetValue("=SUM(A1:B1)");
Api.AddDefName("numbers", "Sheet1!$A$1:$B$1");
var oDefName = Api.GetDefName("numbers");
oDefName.SetName("summa");
oDefName.SetRefersTo("=SUM(A1:B1)");
var oNewDefName = Api.GetDefName("summa");
oWorksheet.GetRange("A3").SetValue("A new name of the range: " + oNewDefName.GetName());
oWorksheet.GetRange("A4").SetValue("The name 'summa' refers to the formula from the cell C1.");
oWorksheet.GetRange("A5").SetValue("Formula: " + oDefName.GetRefersTo());
builder.SaveFile("xlsx", "ApiName.xlsx");
builder.CloseFile();
