public static Quarter GetPrevQuarter(string quarterYear)
{
var qtr = Quarters.Find(q => q.QuarterDescription == quarterYear.Substring(0, 2));
var year = quarterYear.Substring(3);
var prevQtrId = qtr.QuarterId - 1;
if (qtr.QuarterId == 1)
{
prevQtrId = 4;
year = (Convert.ToInt32(year) - 1).ToString();
}
var preQtr = Quarters.First(q => q.QuarterId == prevQtrId);
var qtrYr = preQtr.QuarterDescription + " " + year;
return(new Quarter
{
MonthId = preQtr.MonthId,
QuarterId = preQtr.QuarterId,
QuarterDescription = preQtr.QuarterDescription,
QuarterYear = qtrYr
});
}
