C# form2'deki değeri form1'deki DataGridViev'e aktarma

public partial class Menu : Form
{
    public Menu()
    {
        InitializeComponent();
    }
    urunekle uekle = new urunekle();
    class UrunBilgi
    {
        public String urunadı { get; set; }
        public int urunsayisi { get; set; }
        public int urunfiyati { get; set; }
    }
    List<UrunBilgi> liste = new List<UrunBilgi>();



    private void Bagla()
    {
        dataGridView1.DataSource = null;
        dataGridView1.DataSource = liste;
    }
    private void btnEkle_Click(object sender, EventArgs e)
    {
        UrunBilgi urun = new UrunBilgi();

        uekle.Show();
        Bagla();
    }
    public string urunad = "";

    private void button1_Click_1(object sender, EventArgs e)
    {
        dataGridView1.CurrentRow.Cells[0].Value = urunad;
    }
}

public partial class urunekle : Form
{
    public urunekle()
    {
        InitializeComponent();
    }
    private void button1_Click(object sender, EventArgs e)
    {
        string urunad = textBox1.Text;
        Menu mn = new Menu(urunad);
    }
}