public void MoveToEnd(object source) { if (TypeUtilities.IsNumeric(source)) { m_excelWorksheets.MoveToEnd(TypeConverter.ToInteger(source)); } else if (TypeUtilities.IsString(source)) { m_excelWorksheets.MoveToEnd(TypeConverter.ToString(source)); } else { throw new JavaScriptException(this.Engine, "Error", "Could not move worksheet -- did not understand the argument type."); } }