/// <summary>
/// Pulls an XmlNode from the LineItem
/// </summary>
public String ToXml()
{
return("<LineItem>\n" +
" <Date>" + this.m_Date.ToShortDateString() + "</Date>\n" +
" <Amount>" + this.m_Amount.ToString() + "</Amount>\n" +
" <UnitPeriods>" + this.m_Span.Periods.ToString() + "</UnitPeriods>\n" +
" <OddDays>" + this.m_Span.OddDays.ToString() + "</OddDays>\n" +
" <NumberOccurrences>" + this.m_Occurences.ToString() + "</NumberOccurrences>\n" +
" <Recurrence>" + DateTimeCalculations.GetUnitPeriodString(this.m_Recurrence) + "</Recurrence>\n" +
" <PVIF>" + this.m_PVIF.ToString() + "</PVIF>\n" +
" <PresentValue>" + this.m_PresentValue.ToString() + "</PVIF>\n" +
" <Balance>" + this.m_Balance.ToString() + "</Balance>\n" +
"</LineItem>");
}
/// <summary>
/// Mark the Line Item As Complete. Must only be done by the Line Item Collection
/// </summary>
internal void Complete()
{
if (this.m_DateType == DateType.Date)
{
this.m_Span = DateTimeCalculations.GetNumberPeriods(this.Parent.StartDate, this.m_Date, this.Parent.CommonPeriod);
}
else
{
if (this.Parent.CommonPeriod.numPeriods < 1 || this.Parent.CommonPeriod.numPeriods < 1)
{
throw new ApplicationException("Cannot mark LineItem for completion. A period has been specified, but there is no common period for the Parent LineItemCollection Class");
}
this.m_Date = DateTimeCalculations.GetDateFromPeriod(this.m_Span, this.Parent.StartDate, this.Parent.CommonPeriod);
}
}
public String ToXml()
{
System.Text.StringBuilder sb = new StringBuilder();
sb.AppendLine("<LineItems>");
sb.AppendLine(" <APR>" + this.m_APR.ToString() + "</APR>");
sb.AppendLine(" <CommonPeriod>" + DateTimeCalculations.GetUnitPeriodString(this.m_CommonPeriod) + "</CommonPeriod>");
sb.AppendLine(" <PeriodsPerYear>" + this.m_PeriodsPerYear.ToString() + "</PeriodsPerYear>");
sb.AppendLine(" <DaysPerPeriod>" + this.m_DaysPerPeriod.ToString() + "</DaysPerPeriod>");
sb.AppendLine(" <StartDate>" + this.m_StartDate.ToShortDateString() + "</StartDate>");
sb.AppendLine(" <FinalBalance>" + this.m_FinalBalance.ToString() + "</FinalBalance>");
for (int i = 0; i < this.m_Items.Count; i++)
{
LineItem li = (LineItem)this.m_Items[i];
sb.Append(li.ToXml());
}
sb.AppendLine("</LineItems>");
return(sb.ToString());
}
/// <summary>
/// Finished Adding Line Items, must be used prior to adding to APR
/// </summary>
public void MarkComplete()
{
this.Sort();
//And now we calculate the Unit Period
this.m_CommonPeriod = DateTimeCalculations.CalculateCommonPeriod(this);
this.m_DaysPerPeriod = DateTimeCalculations.DaysPerPeriod(this.m_CommonPeriod);
this.m_PeriodsPerYear = DateTimeCalculations.PeriodsPerYear(this.m_CommonPeriod);
//Mark all line items as complete
for (int i = 0; i < this.m_Items.Count; i++)
{
LineItem li = (LineItem)this.m_Items[i];
li.Complete();
}
m_Completed = true;
}
internal static double GetPVIFA(DateTime StartDate, DateTime CurrLIDate, UnitPeriod frequency, double APR, double PeriodsPerYear, double DaysPerPeriod, int NumberOccurrences, UnitPeriod CommonPeriod)
{
StringBuilder sb = new StringBuilder();
int ic = 1;
double pvifa = 0.0d; //return value, running tally of PVIF
PeriodSpan lastSpan;
PeriodSpan currSpan = DateTimeCalculations.GetNumberPeriods(StartDate, CurrLIDate, CommonPeriod);
lastSpan.OddDays = 0;
lastSpan.Periods = 0;
for (int i = 0; i < NumberOccurrences; i++)
{
//get the PVIF for this current item and add to the pvifa
pvifa += GetPVIF(currSpan, APR, PeriodsPerYear, DaysPerPeriod);
sb.AppendLine(ic.ToString() + " " + CurrLIDate.ToString() + " " + currSpan.Periods.ToString() + currSpan.OddDays.ToString() + " " + pvifa.ToString());
//TODO... figure out how to determine the recurrence in periods if
//periods other than a monthly type or annual are passed in.
//Perhaps we should restrict to only dates instead?
lastSpan = currSpan;
CurrLIDate = DateTimeCalculations.AddPeriodToDate(CurrLIDate, frequency);
currSpan = DateTimeCalculations.GetNumberPeriods(StartDate, CurrLIDate, CommonPeriod);
}
return(pvifa);
}