Deletes the DefName object.
This method doesn't have any parameters.
builder.CreateFile("xlsx"); var oWorksheet = Api.GetActiveSheet(); oWorksheet.GetRange("A1").SetValue("1"); oWorksheet.GetRange("B1").SetValue("2"); Api.AddDefName("numbers", "Sheet1!$A$1:$B$1"); var oDefName = Api.GetDefName("numbers"); oDefName.Delete(); oWorksheet.GetRange("A3").SetValue("The name 'numbers' of the range A1:B1 was deleted."); builder.SaveFile("xlsx", "Delete.xlsx"); builder.CloseFile();