public frmCadastroEndereco(frm_CadastrarVendas frm)
{
cadastrarVenda = frm;
InitializeComponent();
}
private void gerenciarToolStripMenuItem_Click(object sender, EventArgs e)
{
Form frm = new frm_CadastrarVendas();
frm.MdiParent = this;
frm.Show();
}