private void pbAdd_Click(object sender, EventArgs e)
 {
     var postFilterGpVM = new PostFilterGroupItemViewModel(ViewModel.EventControl);
     var filterGroupItem = new PostFilterGroupItem(postFilterPanel.Controls.Count+1) { ViewModel = postFilterGpVM };
     ViewModel.AddFilterGroups(postFilterGpVM);
     postFilterPanel.Controls.Add(filterGroupItem);
     
     
     subscribeToControlEvents(filterGroupItem);
 }
 private void subscribeToControlEvents(PostFilterGroupItem filterGroupItem)
 {
     
     filterGroupItem.DeleteClicked += deleteClicked;            
 }