More User Input of Data

program.cs

        //Please enter the details:
        //First name:
        //Last name:
        //Grade(9-12):
        //Student Id:
        //Username:
        //GPA(0.0-4.0):
        //Plex
        //Vera
        //9
        //12345
        //Plexy182
        //3.3
        //Your Information:
        //Username:Plexy182
        //Id:12345
        //Name:Vera Plex
        //GPA:3.3
        //Grade:9

using System;
using System.Linq;

class Program
{
    static void Main()
    {
        try
        {

            var firstName = "";
            var lastName = "";
            var grade = 0;
            var studentId = 0;
            var login = "";
            var gpa = 0.0;

            Console.WriteLine("Please enter the details:\n");

            Console.WriteLine("First name:");
            firstName = Console.ReadLine();
            Console.WriteLine("Last name:");
            lastName = Console.ReadLine();
        r:
            Console.WriteLine("Grade(9-12):");
            if (!int.TryParse(Console.ReadLine(), out grade) | !(grade >= 9 & grade <= 12)) goto r;
        r2:
            Console.WriteLine("Student Id:");
            if (!int.TryParse(Console.ReadLine(), out studentId)) goto r2;
            Console.WriteLine("Username:");
            login = Console.ReadLine();
        r3:
            Console.WriteLine("GPA(0.0-4.0):");
            if (!double.TryParse(Console.ReadLine(), out gpa) || !(gpa >= 0.0 & gpa <= 4.0)) goto r3;

            Console.WriteLine("Your Information:\nUsername:{0}", login);
            Console.WriteLine("Id:{0}", studentId);
            Console.WriteLine("Name:{0} {1}", lastName, firstName);
            Console.WriteLine("GPA:{0}", gpa);
            Console.WriteLine("Grade:{0}", grade);
        }
        catch
        {

        }

    }
}