private void _buttonEditCampaign_Click(object sender, RoutedEventArgs e)
 {
     _campaingView = new CampaignView();
     _campaingView.Campaign = (Campaign)_listviewCampaign.SelectedItem;
     _campaingView.Closed += new EventHandler(CampaignListView_Loaded);
     _campaingView.ShowDialog();
 }
 private void _buttonAddCampaign_Click(object sender, RoutedEventArgs e)
 {
     _campaingView = new CampaignView();
     _campaingView.Closed += new EventHandler(CampaignListView_Loaded);
     _campaingView.ShowDialog();
 }