/// <summary>Handles the Click event of the btnAdd control. Allows the user to add teams or players the database.</summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">
        ///     The <see cref="RoutedEventArgs" /> instance containing the event data.
        /// </param>
        private async void btnAdd_Click(object sender, RoutedEventArgs e)
        {
            if (String.IsNullOrEmpty(CurrentDB))
            {
                return;
            }
            if (Tf.IsBetween)
            {
                IsEnabled = false;
                Tf = new Timeframe(CurSeason);
                await UpdateAllData();
                IsEnabled = true;
            }

            AddInfo = "";
            var aw = new AddWindow(ref PST);
            aw.ShowDialog();

            if (!String.IsNullOrEmpty(AddInfo))
            {
                if (AddInfo != "$$NST Players Added")
                {
                    var parts = Tools.SplitLinesToArray(AddInfo);
                    var newTeams = parts.Where(s => !String.IsNullOrWhiteSpace(s)).ToList();

                    var oldlen = TST.Count;
                    if (SQLiteIO.IsTSTEmpty())
                    {
                        oldlen = 0;
                    }

                    for (var i = 0; i < newTeams.Count; i++)
                    {
                        if (TST.Count(pair => pair.Value.Name == newTeams[i]) == 1)
                        {
                            MessageBox.Show(
                                "There's a team with the name " + newTeams[i] + " already in the database so it won't be added again.");
                            continue;
                        }
                        var newid = oldlen + i;
                        TST[newid] = new TeamStats(newid, newTeams[i]);
                        TSTOpp[newid] = new TeamStats(newid, newTeams[i]);
                    }
                    await saveAndReloadSeason();
                    UpdateStatus("Teams were added, database saved.");
                }
                else
                {
                    await saveAndReloadSeason();
                    UpdateStatus("Players were added, database saved.");
                }
            }
        }
        /// <summary>
        ///     Handles the Click event of the btnAdd control.
        ///     Allows the user to add teams or players the database.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">
        ///     The <see cref="RoutedEventArgs" /> instance containing the event data.
        /// </param>
        private void btnAdd_Click(object sender, RoutedEventArgs e)
        {
            if (String.IsNullOrEmpty(CurrentDB))
            {
                return;
            }

            AddInfo = "";
            var aw = new AddWindow(ref PST);
            aw.ShowDialog();

            if (!String.IsNullOrEmpty(AddInfo))
            {
                if (AddInfo != "$$NST Players Added")
                {
                    string[] parts = Tools.SplitLinesToArray(AddInfo);
                    List<string> newTeams = parts.Where(s => !String.IsNullOrWhiteSpace(s)).ToList();

                    int oldlen = TST.Count;
                    if (SQLiteIO.IsTSTEmpty())
                    {
                        oldlen = 0;
                    }

                    for (int i = 0; i < newTeams.Count; i++)
                    {
                        if (TST.Count(pair => pair.Value.Name == newTeams[i]) == 1)
                        {
                            MessageBox.Show("There's a team with the name " + newTeams[i] +
                                            " already in the database so it won't be added again.");
                            continue;
                        }
                        int newid = oldlen + i;
                        TST[newid] = new TeamStats(newid, newTeams[i]);
                        TSTOpp[newid] = new TeamStats(newid, newTeams[i]);
                    }
                    SQLiteIO.SaveSeasonToDatabase();
                    UpdateStatus("Teams were added, database saved.");
                }
                else
                {
                    SQLiteIO.SavePlayersToDatabase(CurrentDB, PST, CurSeason, SQLiteIO.GetMaxSeason(CurrentDB));
                    UpdateStatus("Players were added, database saved.");
                }
            }
        }