private void checkBox1_CheckedChanged(object sender, EventArgs e)
{
frmMedication md = new frmMedication();
if (checkBox1.Checked == true)
{
selectClass.selectPatMedication(this.txtPatID.Text);
md.textBox1.Text = selectClass.Treatment + Environment.NewLine + selectClass.Medication;
md.Show();
}
}