private void fornecedorToolStripMenuItem_Click(object sender, EventArgs e)
{
frmFornecedor fornecedor = new frmFornecedor();
fornecedor.MdiParent = this;
fornecedor.Show();
}
private void button2_Click(object sender, EventArgs e)
{
frmFornecedor nvfrn = new frmFornecedor();
nvfrn.Show();
}