private void porClienteToolStripMenuItem_Click(object sender, EventArgs e)
 {
     frmRelatorioCliente novo = new frmRelatorioCliente();
     novo.Show();
 }
 private void porClienteToolStripMenuItem_Click(object sender, EventArgs e)
 {
     Form frm = new frmRelatorioCliente();
     frm.MdiParent = this;
     frm.Show();
 }