user input to array object c#

using System;
namespace array_sample
{
    class StudentData
    {
        static void Main(string[] args)
        {
            Regex num = new Regex(@"^\d{5}$");
            Student[] ourStudents = new Student[24];   
            // declared an array of stduent objects 

            for (int i = 0; i < 24; i++)
            {
                Console.WriteLine("Enter your Student Number :");
                Match n = num.Match(Console.ReadLine());
                if (n.Value != "")
                {
                  ourStudents[i].Number = Int32.Parse(Console.ReadLine()); 
                  // make sure to convert to integer

                  Console.WriteLine("Enter your Name :");
                  ourStudents[i].Name = Console.ReadLine(); 
                }
                Else
                {
                  Console.WriteLine("Number Can only be 5 digits");
                  if (i > 0)
                     {i = i - 1;}
                  else
                     {i = 0;}
                }

            } // end of input loop

            for(i=0; i<24; i++)
            {
                Console.WriteLine("Number : " + ourStudents[i].Number +'\t' + "Name :"
                                  + ourStudents[i].Name);
            }// end of output loop

            Console.ReadLine();
        }
    }// end of class
} // end of namespace