public static DateTime NextRolling(DateTime baseTime, TimeBarItemType timeBarItemType)
{
DateTime returnDate = DateTime.MinValue;
int timeBarValue = (int)timeBarItemType.Value;
switch (timeBarItemType.Tag)
{
case "M":
returnDate = LastRolling(baseTime, timeBarItemType).AddMinutes(timeBarValue);
break;
case "H":
returnDate = LastRolling(baseTime, timeBarItemType).AddHours(timeBarValue);
break;
case "D":
returnDate = LastRolling(baseTime, timeBarItemType).AddDays(1);
break;
case "W":
returnDate = LastRolling(baseTime, timeBarItemType).AddDays(7);
break;
case "MN":
returnDate = LastRolling(baseTime, timeBarItemType).AddMonths(1);
break;
}
return(returnDate);
}
public static DateTime LastRolling(DateTime baseTime, TimeBarItemType timeBarItemType)
{
DateTime returnDate = DateTime.MinValue;
int timeBarValue = (int)timeBarItemType.Value;
switch (timeBarItemType.Tag)
{
case "M":
returnDate = new DateTime(baseTime.Year, baseTime.Month, baseTime.Day, baseTime.Hour, (baseTime.Minute / timeBarValue) * timeBarValue, 0);
break;
case "H":
returnDate = new DateTime(baseTime.Year, baseTime.Month, baseTime.Day, (baseTime.Hour / timeBarValue) * timeBarValue, 0, 0);
break;
case "D":
returnDate = new DateTime(baseTime.Year, baseTime.Month, baseTime.Day, 0, 0, 0);
break;
case "W":
int dayOfWeek = ((int)baseTime.DayOfWeek) == 0 ? 7 : ((int)baseTime.DayOfWeek);
returnDate = new DateTime(baseTime.Year, baseTime.Month, baseTime.Day, 0, 0, 0).AddDays(1 - dayOfWeek);
break;
case "MN":
returnDate = new DateTime(baseTime.Year, baseTime.Month, 1, 0, 0, 0);
break;
}
return(returnDate);
}
