private void UpdateListView()
        {
            cardCollection.Items.Clear();

            for (int i = 0; i < CollectionManager.Instance.CurrentList.Count; i++)
            {
                cardCollection.Items.Add(CollectionManager.Instance.CurrentList[i].Name);
                cardCollection.Items[i].SubItems.Add(CollectionManager.Instance.CurrentList[i].CardID.ToString());
            }
        }

private void FactionFilter_CheckedChanged(object sender, EventArgs e)
        {
            if (allCardsFilter.Checked)
                CollectionManager.Instance.CurrentList = CollectionManager.Instance.AllCards;

            else if (ascendedButton.Checked)
                CollectionManager.Instance.CurrentList = CollectionManager.Instance.AscendedCards;

            else if (corruptionButton.Checked)
                CollectionManager.Instance.CurrentList = CollectionManager.Instance.CorruptionCards;

            else if (drakkorithButton.Checked)
                CollectionManager.Instance.CurrentList = CollectionManager.Instance.DrakkorithCards;

            else if (oblivionButton.Checked)
                CollectionManager.Instance.CurrentList = CollectionManager.Instance.OblivionCards;

            else if (vestigeButton.Checked)
                CollectionManager.Instance.CurrentList = CollectionManager.Instance.VestigeCards;

            else if (neutralButton.Checked)
                CollectionManager.Instance.CurrentList = CollectionManager.Instance.NeutralCards;

            UpdateListView();
        }

private void ApplyFilters(object sender, EventArgs e)
        {
            FactionFilter_CheckedChanged(null, null);

            if (cardCostTextBox.Text != "")
            {
                switch (cardCostFilter.Text)
                {
                    case "=":
                        CollectionManager.Instance.CurrentList.RemoveAll(card => card.Cost != int.Parse(cardCostTextBox.Text));
                        break;
                    case ">=":
                        CollectionManager.Instance.CurrentList.RemoveAll(card => card.Cost < int.Parse(cardCostTextBox.Text));
                        break;
                    case "<=":
                        CollectionManager.Instance.CurrentList.RemoveAll(card => card.Cost > int.Parse(cardCostTextBox.Text));
                        break;
                    default:
                        break;
                }
            }

            UpdateListView();
        }