Chimney.Shared.UserControls.ChimneyServerUserControl.chimneyMpdServer_OnPlChanges C# (CSharp) Method

        async void chimneyMpdServer_OnPlChanges(object sender, ResponseEventArgs e)
        {
            if (e.arguments.Count > 0)
            {
                int b = -1;
                try
                {
                   b  = Convert.ToInt32(e.arguments.First<string>());
                }
                catch
                {
                    b = -1;
                }

                if (b == -1) chimneyMpdServer.AppendResponse(string.Empty, e.id, e.position);
                else
                {
                    var currentPlaylist = await Dbconnection.QueryAsync<CurrentPlaylist>("SELECT * FROM CurrentPlaylist WHERE Version > " + b + " ORDER BY PositionId");

                    string response = string.Empty;

                    foreach (CurrentPlaylist cp in currentPlaylist)
                    {
                        //var files = await Dbconnection.QueryAsync<File>("SELECT * FROM Files WHERE FileId = " + cp.FileId);
                        if (cp.IsUri)
                        {
                            response += "file: " + cp.Uri + "\n";
                            response += "Pos: " + cp.PositionId + "\n";
                        }
                        else
                        {
                            var file = await Dbconnection.FindAsync<File>(o => o.FileId == cp.FileId);
                            if (file != null)
                            {
                                file.Pos = cp.PositionId;
                                await Dbconnection.UpdateAsync(file);

                                response += file.ToResponseString();
                            }
                        }
                    }

                    chimneyMpdServer.AppendResponse(response, e.id, e.position);
                }
            }

        }