protected void ButtonEffacerTousLesVotes_Click(object sender, EventArgs e)
 {
     QuestionsVotesEnBas.Clear();
     PanelReponsesEnBas.Controls.Clear();
     AfficherTousLesVotes = false;
     Response.Redirect("~/Poll/QuestionnaireStatAll.aspx");
 }
 protected void ButtonAfficherTousLesVotes_Click(object sender, EventArgs e)
 {
     QuestionsVotesEnBas.Clear();
     PanelReponsesEnBas.Controls.Clear();
     AfficherTousLesVotes = true;
     AfficherToutLesVotesEnBas(Guid.Empty);
 }