/// <summary>
        /// Handles the ContentRendered event of the Window control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void Window_ContentRendered(object sender, EventArgs e)
        {
            this.progressBar.Visibility = Visibility.Visible;

            Thread subscriptionThread = new Thread(new ThreadStart(() =>
            {
                try
                {
                    TokenCredentials tokenCredentials = new TokenCredentials(this.authResult.AccessToken);
                    RM.SubscriptionClient subsClient  = new RM.SubscriptionClient(tokenCredentials);

                    List <RM.Models.SubscriptionInner> subscriptionList = new List <RM.Models.SubscriptionInner>();

                    var resp = subsClient.Subscriptions.List();
                    subscriptionList.AddRange(resp);

                    while (!string.IsNullOrEmpty(resp.NextPageLink))
                    {
                        resp = subsClient.Subscriptions.ListNext(resp.NextPageLink);
                        subscriptionList.AddRange(resp);
                    }

                    this.Dispatcher.Invoke(() =>
                    {
                        this.subscriptions.Clear();
                        subscriptionList.ForEach(sub => this.subscriptions.Add(sub));
                        this.comboSubscriptionList.IsEnabled = true;
                        this.progressBar.Visibility          = Visibility.Hidden;
                    });
                }
                catch (Exception ex)
                {
                    Logger.LogError(CallInfo.Site(), ex, "Failed to get user subscriptions");

                    this.Dispatcher.Invoke(() => MessageBox.Show("Failed to get list of subscriptons!! Exiting", "Azure Error", MessageBoxButton.OKCancel, MessageBoxImage.Error));
                    Application.Current.Shutdown();
                }
            }));

            subscriptionThread.Start();
        }