how to properly show the output on a Data Grid View ?

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C#

WF

DataGridView

I've edited my last project, showing no errors in code nor in run time.

it consists of two forms :

form1 is used to add a new object

Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Collections;
namespace MobileCompany
{
    public partial class Form1 : Form
    {
        //At the start of the Application, we Create a New Company

     static public  List<SubcriberLine> Company = new List<SubcriberLine>();
       
        
        public Form1()
        {
            InitializeComponent();



        }
        

        private void button1_Click(object sender, EventArgs e)
        {
           //After Entering data into the fields, we Create an Cellphone Line Object 
            
                SubcriberLine s = new SubcriberLine(txtName.Text,txtNumber.Text,Convert.ToInt32(txtMobile.Text),
                    Convert.ToInt32(txtFixed.Text));
           
              
            //We Add the Cellphone Line Object to the Company's DataBase, Our Arraylist in our company MTN

                Company.Add(s);
           

            //confront the MTN Worker that the Adding process has been finished !

                MessageBox.Show("new CellPhone Line has been created !");
            
            



        }


        private void button2_Click(object sender, EventArgs e)
        {
            //In order to show all lines in Our company, we need to SHOW new table, new Page , or a new FORM
           
            Form2 f = new Form2();
            f.Show();
 
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }


     }
    }

and by pressing buttom2, a new form , called Form2 is created and shown, this consists of only a DataGridView, and in each line it shows every object with detailed information, just as the following:

Form2.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Collections;

namespace MobileCompany
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        private void Form2_Load(object sender, EventArgs e)
        {

            for (int i = 0; i < Form1.Company.Count; i++)
            {
                dataGridView1.Rows.Add(Form1.Company[i].Identity,
                    Form1.Company[i].CustomerName, Form1.Company[i].MobileNumber);


  
            }
        }
    }

}

sadly, it's completely right thinking with the proper code-I guess; still, when running the application,pressing buttom2 to open the 2nd form with the DataGridView, it still can't show the current objects- which I've coded it to show.
Anyone can share and help, that's what coding is all about !