void addtest(Test x)
{
if (temp.Get_Trainee(x.Traineeid) == null)
throw new Exception("this trianee doesnt exist...");
if (temp.Get_Trainee(x.Traineeid).numclass < 20)
throw new Exception("you need 20 classes to do the test...");
if (temp.Get_Trainee(x.Traineeid).mylasttest.testdate.Year == DateTime.Today.Year) // if the last test it's the same year as today...
{
int date = temp.Get_Trainee(x.Traineeid).mylasttest.testdate.DayOfYear; // the day of the year in the last test
int today = DateTime.Today.DayOfYear; //the day of the year today
if ( (today - date )<7)
throw new Exception("sorry , but you need to wait 7 days to do the test another time...");
}
}