private void SpinnerItemSelected(object sender, AdapterView.ItemSelectedEventArgs e)
        {
            string condition = conditionSpinner.GetItemAtPosition(e.Position).ToString();
            SimpleFilterConditionType conditionType = (SimpleFilterConditionType)Enum.Parse(typeof(SimpleFilterConditionType), condition);

            nameTextView.Text        = filterConditionDefaultValues.SingleOrDefault(t => t.Key.Equals(conditionType)).Value.Item1;
            valueEditText.Text       = filterConditionDefaultValues.SingleOrDefault(t => t.Key.Equals(conditionType)).Value.Item2;
            valueEditText.Visibility = condition.Contains("Empty") ? ViewStates.Invisible : ViewStates.Visible;
        }
 public void Add(SimpleFilterConditionType conditionType, string columnName, string matchValue)
 {
     Add(conditionType, new Tuple <string, string>(columnName, matchValue));
 }