private void cadastroDeFornecedorToolStripMenuItem_Click(object sender, EventArgs e)
{
frmCadForn frmForn = new frmCadForn();
frmForn.MdiParent = this;
frmForn.Show();
}
private void button4_Click(object sender, EventArgs e)
{
frmCadForn frmForn = new frmCadForn();
frmForn.MdiParent = this;
frmForn.Show();
}