public VolunteerTracker.Period GetCurrentPeriod()
{
VolunteerTracker.Period period = new VolunteerTracker.Period(DateTime.Now.Year, DateTime.Now.Month);
if (GetDefaultPeriod != null)
{
period = GetDefaultPeriod();
}
int year, month;
if (Request["Year"] != null && Int32.TryParse(Request["Year"], out year))
{
period.Year = year;
}
if (Request["Month"] != null && Int32.TryParse(Request["Month"], out month))
{
period.Month = month;
}
return period;
}
protected void SelectMonth_TextChanged(object sender, EventArgs e)
{
string value = DropDownListSelectMonth.SelectedValue;
if (value == null)
{
return;
}
string sMonth = value.Split(new char[] { ':' })[0];
string sYear = value.Split(new char[] { ':' })[1];
VolunteerTracker.Period period = new VolunteerTracker.Period(Int32.Parse(sYear), Int32.Parse(sMonth));
if (PeriodChanged != null)
{
PeriodChanged();
}
Response.Redirect(Request.Path + "?" + GetPeriodQuery(period));
}
public Period SubtractMonth()
{
Period period = new Period(year, month);
if (period.Month > 1)
{
period.Month--;
return period;
}
period.Month = 12;
period.Year--;
return period;
}
public Period AddYears(int numYears)
{
Period p = new Period(year, month);
p.Year += numYears;
return p;
}
public Period AddMonths(int numMonths)
{
Period period = new Period(year, month);
if (numMonths >= 0)
{
for (int i = 0; i < numMonths; i++)
{
period = period.AddMonth();
}
}
if (numMonths < 0)
{
for (int i = 0; i < -numMonths; i++)
{
period = period.SubtractMonth();
}
}
return period;
}
public Period AddMonth()
{
Period period = new Period(year, month);
if (period.Month < 12)
{
period.Month += 1;
}
else
{
period.Month = 1;
period.Year += 1;
}
return period;
}