private void button1_Click(object sender, EventArgs e)
        {
 
            Form2 f = new Form2();
            f.Owner = this;
            f.Show();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Form1 main = this.Owner as Form1;
            if (main != null)
            {
                string s = main.Text;
                main.Text = "Lol";
            }
 
        }