private RiskRateDetail getRiskRateDetail(int actualSumAssured, OrderedDictionary dictionary)
{
RiskRateDetail riskRateDetail = null;
for (var index = 0; index < dictionary.Keys.Count; index++)
{
int lowerBandSumAssured = (int)dictionary.Cast <DictionaryEntry>().ElementAt(index).Key;
decimal lowerBandRiskRate = (decimal)dictionary[index];
int nextIndex = index + 1;
int upperBandSumAssured = (int)dictionary.Cast <DictionaryEntry>().ElementAt(nextIndex).Key;
decimal upperBandRiskRate = (decimal)dictionary[nextIndex];
if (actualSumAssured >= lowerBandSumAssured && actualSumAssured <= upperBandSumAssured)
{
riskRateDetail = new RiskRateDetail(
actualSumAssured,
lowerBandSumAssured,
lowerBandRiskRate,
upperBandSumAssured,
upperBandRiskRate
);
break;
}
}
return(riskRateDetail);
}
private decimal calculateRiskRate(int sumAssured, OrderedDictionary dictionary)
{
decimal riskRate;
RiskRateDetail riskRateDetail = getRiskRateDetail(sumAssured, dictionary);
decimal lowerBandSumAssured = riskRateDetail.LowerBandSumAssured;
decimal upperBandSumAssured = riskRateDetail.UpperBandSumAssured;
decimal lowerBandRiskRate = riskRateDetail.LowerBandRiskRateValue;
decimal upperBandRiskRate = riskRateDetail.UpperBandRiskRateValue;
riskRate = ((sumAssured - lowerBandSumAssured) / (upperBandSumAssured - lowerBandSumAssured) * upperBandRiskRate
+ (upperBandSumAssured - sumAssured) / (upperBandSumAssured - lowerBandSumAssured) * lowerBandRiskRate);
return(riskRate);
}
