void AddWord(string word, long value) { if (String.IsNullOrEmpty(word)) { MessageBox.Show("Invalid value"); return; } bool writeRes = trie.TryWrite(word, value); if (writeRes) { if (String.IsNullOrEmpty(txtLog.Text)) { txtLog.Text = word + " - " + value; } else { txtLog.Text += Environment.NewLine + word + " - " + value; } } else { MessageBox.Show("Failed adding new value. Please try to free some space."); } }