adding multiple rows to datagrid view

using System;

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;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public static List<employee> lst = new List<employee>();
        public Form1()
        {
            InitializeComponent();
        }      
        private void button1_Click(object sender, EventArgs e)
        {
           employee p = new employee();
            p.eid = Convert.ToInt32(textBox1.Text);
            p.ename = textBox2.Text;
            p.edes = textBox3.Text;
            Form2 form2 = new Form2();
            form2.passThisValuetoDgv(p.eid, p.ename, p.edes);
            form2.ShowDialog();
        }
        private void button2_Click(object sender, EventArgs e)
        {
            employee p = new employee();
            p.eid = Convert.ToInt32(textBox1.Text);
            p.ename = textBox2.Text;
            p.edes = textBox3.Text;
            lst.Add(p);
            dataGridView1.DataSource = lst;
           
        } 
    }
    public  class employee
        {
            public int eid { get; set; }
            public string ename { get; set; }
            public string edes { get; set; }
        }
}

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;

namespace WindowsFormsApplication1
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        private void Form2_Load(object sender, EventArgs e)
        {

        }
        DataTable dt;
        public void passThisValuetoDgv(int value1, string value2,string value3)
        {
            dt = new DataTable();
            dt.Columns.Add("Col1");
            dt.Columns.Add("Col2");
            dt.Columns.Add("Col3");
            dataGridView1.DataSource = dt;

            dt.Rows.Add(value1);
            dataGridView1.CurrentRow.Cells[1].Value = value2;
            dataGridView1.CurrentRow.Cells[2].Value = value3;


        }
        }


    }