private void BtnArticole_Click(object sender, EventArgs e)
{
ItemsForm articole = new ItemsForm();
articole.Show();
this.Hide();
}
private void BtnItems_Click(object sender, EventArgs e)
{
ItemsForm itemsMenu = new ItemsForm();
itemsMenu.Show();
this.Hide();
itemsMenu.FormClosed += FormClosed;
}