If your field type is CALCULATEDCALCULATED
, it is a known behaviour
to solve this you can use SPFieldCalculated object
example:
SPFieldCalculated cf = (SPFieldCalculated)item.Fields["AverageFeedBackRating"]; string cfVal = cf.GetFieldValueForEdit(item["AverageFeedBackRating"]);
SPFieldCalculated cf = (SPFieldCalculated)item.Fields["AverageFeedBackRating"];
string cfVal = cf.GetFieldValueForEidit(item["AverageFeedBackRating"]);