dateTimeToTimeStamp function
Implementation
TTimeStamp dateTimeToTimeStamp(DateTime dt) {
final days = DateTime(dt.year, dt.month, dt.day)
.difference(DateTime(1899, 12, 30))
.inDays +
dateDelta;
final msecs = dt.hour * 3600000 + dt.minute * 60000 + dt.second * 1000 +
dt.millisecond;
return TTimeStamp(msecs, days);
}