private void rejectBtn_Click(object sender, RoutedEventArgs e)
        {
            if (sender == null)
            {
                return;
            }

            string comments = getApprovalComments();
            string status   = "rejected";

            ShowProgressBar();
            Approval responseApproval;

            Task.Factory.StartNew(() =>
            {
                responseApproval = VSTSService.PatchApproval(approval, status, comments);

                if (responseApproval != null)
                {
                    approval = responseApproval;
                }
            }).ContinueWith(async(Task t) =>
            {
                await this.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
                {
                    approvalCardSP.DataContext = approval;
                    HideProgressBar();
                });
            });
        }
        private void approveBtn_Click(object sender, RoutedEventArgs e)
        {
            if (sender == null)
            {
                return;
            }

            string comments = getApprovalComments();
            string status   = "approved";


            ShowProgressBar();
            Approval responseApproval;

            Task.Factory.StartNew(() =>
            {
                responseApproval = VSTSService.PatchApproval(approval, status, comments);

                if (responseApproval != null)
                {
                    approval = responseApproval;
                }
            }).ContinueWith(async(Task t) =>
            {
                await this.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
                {
                    approvalCardSP.DataContext = approval;

                    if (!approval.Status.ToLowerInvariant().Equals("pending"))
                    {
                        noProCommentsTB.Visibility = Visibility.Collapsed;
                    }
                    HideProgressBar();
                });
            });
        }