public void patient_valid()
{
dll.insertPatient();
if (txtpatid.text == string.Empty)
{
MessageBox.Show("no textbox should be empty");
}
else if (txtpatname.text == string.Empty)
{
MessageBox.Show("no textbox should be empty");
}
else if (txtpatadd.text == string.Empty)
{
MessageBox.Show("no textbox should be empty");
}
else if (comboBox1.text == string.Empty)
{
MessageBox.Show("no textbox should be empty");
}
else if (txtpatnumber.text == string.Empty)
{
MessageBox.Show("no textbox should be empty");
}
}
