private void btnNew_Click(object sender, EventArgs e)
{
addPatientDatasForm paf = new addPatientDatasForm();
paf.lblPatientNo.Text = "0";
paf.ShowDialog();
}
private void DGVpatient_DoubleClick(object sender, EventArgs e)
{
string patientNoStr = DGVpatient.SelectedRows[0].Cells["PatientNo"].Value.ToString();//MessageBox.Show(drugNoStr);
addPatientDatasForm add = new addPatientDatasForm();
add.lblPatientNo.Text = patientNoStr; //drugNoStr > 0 : update
add.ShowDialog();
}