public MainWindowViewModel()
        {
            EdgeLocalStateFilePath.SetValidateNotifyError(IsExitisFile);
            EdgeCookiesFilePath.SetValidateNotifyError(IsExitisFile);
            ChromeLocalStateFilePath.SetValidateNotifyError(IsExitisFile);
            ChromeCookiesFilePath.SetValidateNotifyError(IsExitisFile);
            ObsCookiesFilePath.SetValidateNotifyError(IsExitisFile);
            EdgeCommand   = new[] { EdgeLocalStateFilePath.ObserveHasErrors, EdgeCookiesFilePath.ObserveHasErrors, ObsCookiesFilePath.ObserveHasErrors }.CombineLatestValuesAreAllFalse().ToReactiveCommand <Models.CommandParameter>();
            ChromeCommand = new[] { ChromeLocalStateFilePath.ObserveHasErrors, ChromeCookiesFilePath.ObserveHasErrors, ObsCookiesFilePath.ObserveHasErrors }.CombineLatestValuesAreAllFalse().ToReactiveCommand <Models.CommandParameter>();

            LocalStateFilePath.SetValidateNotifyError(IsExitisFile);
            SrcCookieFilePath.SetValidateNotifyError(IsExitisFile);
            DestCookieFilePath.SetValidateNotifyError(IsExitisFile);
            HostKey.SetValidateNotifyError(host =>
            {
                if (String.IsNullOrWhiteSpace(host))
                {
                    return("Empty");
                }

                return(null);
            });

            ParamCommand = new[] { LocalStateFilePath.ObserveHasErrors, SrcCookieFilePath.ObserveHasErrors, HostKey.ObserveHasErrors, DestCookieFilePath.ObserveHasErrors }.CombineLatestValuesAreAllFalse().ToReactiveCommand <Models.CommandParameter>();

            EdgeCommand.Subscribe(ExecuteCommand.Execute);
            ChromeCommand.Subscribe(ExecuteCommand.Execute);
            ParamCommand.Subscribe(ExecuteCommand.Execute);

            OkCommand.Subscribe(async _ =>
            {
                Executing.Value = true;

                try
                {
                    await System.Threading.Tasks.Task.Run(() =>
                    {
                        CookieManager.Converter.Convert(Environment.ExpandEnvironmentVariables(Param.LocalStateFilePath), Environment.ExpandEnvironmentVariables(Param.SrcCookieFilePath), Param.HostKey, Environment.ExpandEnvironmentVariables(Param.DestCookieFilePath));
                    });
                }
                catch
                {
                    IsErrorDialogOpen.Value = true;
                }

                Executing.Value    = false;
                IsDialogOpen.Value = false;
            }
                                );

            ExecuteCommand.Subscribe(param =>
            {
                IsDialogOpen.Value = true;
                Param = param;
            });

            CancelCommand.Subscribe(_ => IsDialogOpen.Value = false);

            ErrorOkCommand.Subscribe(_ => IsErrorDialogOpen.Value = false);
        }