private void button3_Click(object sender, EventArgs e)
{
OldPatientForm ob = new OldPatientForm();
ob.Show();
}
private void openToolStripMenuItem2_Click(object sender, EventArgs e)
{
OldPatientForm ob = new OldPatientForm();
ob.Show();
}
private void treatmentBtn_Click(object sender, EventArgs e)
{
OldPatientForm ob = new OldPatientForm();
ob.Show();
this.Close();
}