private void button1_Click(object sender, EventArgs e)
        {
            this.Hide();
            log_blood_taker taker = new log_blood_taker();

            taker.Show();
        }
        private void button2_Click(object sender, EventArgs e)
        {
            con.Open();

            OleDbCommand cmd = con.CreateCommand();

            cmd.CommandType = CommandType.Text;
            cmd.CommandText = "insert into Table1 values('" + name.Text + "','" + location.Text + "','" + weight.Text + "','" + b_g.Text + "'," +
                              "'" + gender.Text + "','" + email.Text + "','" + password.Text + "','" + phone.Text + "','donor')";
            cmd.ExecuteNonQuery();
            con.Close();

            MessageBox.Show("You are successfully registered as a blood donor.");
            this.Hide();
            log_blood_taker go = new log_blood_taker();

            go.Show();
        }