private void btnDeleteVille_Click(object sender, EventArgs e)
 {
     if (this.dataGridVilles.SelectedRows.Count > 0)
     {
         int selectedRowIndex = this.dataGridVilles.SelectedRows[0].Index;
         int idVille          = Convert.ToInt32(this.dataGridVilles.Rows[selectedRowIndex].Cells["IdVille"].Value);
         IGestionEmployes
             gestionEmployes = GestionEmployesBuilderClassFactory.getInterface();
         gestionEmployes.deleteVille(idVille);
         dataGridVilles.DataSource = gestionEmployes.findAllVilles();
     }
 }