public void ReadFromFile(string FileName)
{
StreamReader reader = new StreamReader(FileName);
string line;
listStudent.Clear();
while ((line = reader.ReadLine()) != null)
{
string[] items = line.Split('|');
Student s = null;
if (items[0].Equals("1"))
{
s = new Student(
Convert.ToInt32(items[1]),
items[2],
Convert.ToDateTime(items[3])
);
}
else if (items[0].Equals("2"))
{
s = new ForeignStudent(Convert.ToInt32(items[1]),
items[2],
Convert.ToDateTime(items[3]), items[4]);
}
else if (items[0].Equals("3"))
{
s = new VNStudent(Convert.ToInt32(items[4]), Convert.ToInt32(items[1]),
items[2],
Convert.ToDateTime(items[3]));
}
else
{
throw new Exception("Invalid student type");
}
listStudent.Add(s);
}
reader.Close();
}
public bool AddStudent()
{
Console.WriteLine("=============================");
Console.WriteLine("Input student. Choose one of below");
Console.WriteLine("1 add Student: ");
Console.WriteLine("2 add Foreign Student: ");
Console.WriteLine("3 add Vietnamese student: ");
Console.WriteLine("4 to exit: ");
Console.WriteLine("=============================");
Console.Write("Enter your choice : ");
int choice = Convert.ToInt32(Console.ReadLine());
switch (choice)
{
case 1:
Student student = new Student();
student.Input();
listStudent.Add(student);
return(true);
case 2:
Student foreignStudent = new ForeignStudent();
foreignStudent.Input();
listStudent.Add(foreignStudent);
return(true);
case 3:
Student vietnameseStudent = new VNStudent();
vietnameseStudent.Input();
listStudent.Add(vietnameseStudent);
return(true);
default:
return(false);
}
}