private void btnGeri_Click(object sender, EventArgs e)
        {
            ChatAnaFormu CAform = new ChatAnaFormu();

            CAform.Show();
            this.Close();
        }
        private void btnChatEkrani_Click(object sender, EventArgs e)
        {
            ChatAnaFormu ChtForm = new ChatAnaFormu();

            ChtForm.Show();
            this.Hide();
        }