private void btnAgregarCliente_Click(object sender, EventArgs e)
 {
     FrmAltaCliente frmAlta = new FrmAltaCliente();
     frmAlta.Show();
 }
        private void btnAgregarCliente_Click(object sender, EventArgs e)
        {
            FrmAltaCliente frmAlta = new FrmAltaCliente();

            frmAlta.Show();
        }