private void backstageViewTabItem1_SelectedChanged(object sender, DevExpress.XtraBars.Ribbon.BackstageViewItemEventArgs e)
{
ProposNous o = new ProposNous();
o.ShowDialog();
}
private void barButtonItem29_ItemClick_1(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
ProposNous pr = new ProposNous();
pr.ShowDialog();
}