private void btnVolver_Click(object sender, EventArgs e)
        {
            FrmConsultas frm = new FrmConsultas();

            frm.Show();
            this.Close();
        }
 private void btnConsultas_Click(object sender, EventArgs e)
 {
     FrmConsultas frm = new FrmConsultas();
     frm.Show();
     this.Hide();
 }