title: Adding multiple data to a list in c#
body: <p>Hi I'm trying to add some data to my list including string and integer. I want to store student's name , last name and phone number in the same list so I'm using class. here is my code </p>
  
  <pre><code>using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text;
  
  
   namespace educationsystem
  {
     public class student 
          {
              public string name { get;set;}
              public string lastname {get;set;}
              public long phone {get;set;}
          }
             List&lt;student&gt; Students = new List&lt;student&gt;();
             Students.Add(new student {name= "mahta",lastname= "sahabi",phone= "3244"});
  class Program
  {
  
      static void Main(string[] args)
      {
  
  
          Console.WriteLine("please choose one of the numbers below : "+"\n");
          Console.WriteLine("1.adding new student"+"\n");
          Console.WriteLine("2.adding new course"+"\n");
          Console.WriteLine("3.adding new grade"+"\n");
          Console.WriteLine("4.showing the best student"+"\n");
          Console.WriteLine("5.getting students average"+"\n");
          Console.WriteLine("6.exit"+"\n");
           string input = Console.ReadLine();
  
  
               if (input == "1")
              {
                  Console.Clear();
                  List&lt;int&gt; grades = new List&lt;int&gt;();
  
                      Console.WriteLine("please enter the students name");
                      string name = Console.ReadLine();
                      Console.WriteLine("please enter the students last name");
                      string lastname = Console.ReadLine();
                      Console.WriteLine("please enter the students phone number");
                      long phone = Convert.ToInt32(Console.ReadLine());
                      Console.WriteLine(name +" "+ lastname +" " + phone);
  
  
  
  
  
              }
              else if (input == "2")
              {
  
              }
              else if (input == "3")
              {
  
              }
              else if (input == "4")
              {
  
              }
              else if (input == "5")
              {
  
              }
  
  
          Console.ReadKey();
  }
  
   }
         }
  </code></pre>
  
  <p>but it is not working. My list name is students but the system wouldn't recognize it. would you help me please?</p>