private void buttonFermerProjet_Click(object sender, RibbonControlEventArgs e)
{
AddInUtilities.FermerProjet();
// then toggle needed to make ribbon groups invisible except "Application Excel 0365"
//if (AddInUtilities.GetIsAddIn())
//{
// Globals.Ribbons.ManageTaskPaneRibbon.groupDeplacement.Visible = false;
// Globals.Ribbons.ManageTaskPaneRibbon.groupNavigation.Visible = false;
// Globals.Ribbons.ManageTaskPaneRibbon.groupSaisieItems.Visible = false;
// Globals.Ribbons.ManageTaskPaneRibbon.groupGestProjet.Visible = false;
// Globals.ThisAddIn.TaskPane.Visible = false;
//}
}