private void btnAdd_Click(object sender, RoutedEventArgs e)
        {
            MunicipalityViewModel Municipality = new MunicipalityViewModel();

            Municipality.Identifier = Guid.NewGuid();

            MunicipalityAddEdit addEditForm = new MunicipalityAddEdit(Municipality, true);

            addEditForm.MunicipalityCreatedUpdated += new MunicipalityHandler(SyncData);
            FlyoutHelper.OpenFlyout(this, ((string)Application.Current.FindResource("Podaci_o_opštinama")), 95, addEditForm);
        }
        private void btnEdit_Click(object sender, RoutedEventArgs e)
        {
            if (CurrentMunicipality == null)
            {
                MainWindow.WarningMessage = ((string)Application.Current.FindResource("Morate_odabrati_opštinu_za_izmenuUzvičnik"));
                return;
            }

            MunicipalityAddEdit addEditForm = new MunicipalityAddEdit(CurrentMunicipality, false);

            addEditForm.MunicipalityCreatedUpdated += new MunicipalityHandler(SyncData);
            FlyoutHelper.OpenFlyout(this, ((string)Application.Current.FindResource("Podaci_o_opštinama")), 95, addEditForm);
        }