I'm looking to implement a search function on my `ListView`. So far I have successfully populated `ListView` with jobs, and I have an `EditText` field to be used as my search box. This is my code so far;

```
public class CurrentJobsActivity : Activity
    {
        private ListView listView;
        private EditText inputSearch;

        protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);

            SetContentView(Resource.Layout.CurrentJobs);
            LoadCurrentJobs();
        }

        private void LoadCurrentJobs()
        {
            var _currentJobsService = new CurrentJobsService();
            var listOfJobs = _currentJobsService.GetJobList("currentjobs");

            listView = FindViewById<ListView>(Resource.Id.currentJobsListView);
            inputSearch = FindViewById<EditText>(Resource.Id.inputSearch);

            listView.Adapter = new JobListAdapter(this, listOfJobs);
            listView.ItemClick += OnListItemClick;

            inputSearch.TextChanged += InputSearchOnTextChanged;
        }

        private void InputSearchOnTextChanged(object sender, TextChangedEventArgs e)
        {
            listView.SetFilterText(inputSearch.Text);
        }

```

As you can see I have attempted to do a search with `listView.SetFilterText(inputSearch.Text);` however nothing happens as the user is typing. How can I modify this to implement a search function?