private void buttonmodif_Click(object sender, EventArgs e)
{
Formlocation modifier = new Formlocation();
modifier.labeltitre.Text = "modifier materiel";
modifier.buttonactual.Visible = false;
modifier.ShowDialog();
}
private void buttonajout_Click(object sender, EventArgs e)
{
Formlocation ajout = new Formlocation();
ajout.ShowDialog();
}