public static void AddStudent()
{
Console.Clear();
Console.Write("First name: ");
string firstName = Console.ReadLine();
Console.Write("Last name: ");
string lastName = Console.ReadLine();
Console.Write("Date of birth: ");
bool result = DateTime.TryParse(Console.ReadLine(), out DateTime dateOfBirth);
while (!result || dateOfBirth > DateTime.Now)
{
Console.Write("Wrong input!\nDate of birth has to be set as YYYY/MM/DD and can't be a future date \nDate of Birth: ");
result = DateTime.TryParse(Console.ReadLine(), out dateOfBirth);
}
Console.Write("Tuition Fees: ");
result = decimal.TryParse(Console.ReadLine(), out decimal tuitionFees);
while (!result || tuitionFees < 0)
{
Console.Write("Wrong input!\n Tuition fees can't be a negative number \nTuition Fees: ");
result = decimal.TryParse(Console.ReadLine(), out tuitionFees);
}
StudentDb.AddStudent(firstName, lastName, dateOfBirth, tuitionFees);
Console.Clear();
Console.WriteLine("Student added successfully!\n");
}