OpenTween.TweenMain.ApiUsageInfoMenuItem_Click C# (CSharp) Method

        private async void ApiUsageInfoMenuItem_Click(object sender, EventArgs e)
        {
            TwitterApiStatus apiStatus;

            using (var dialog = new WaitingDialog(Properties.Resources.ApiInfo6))
            {
                var cancellationToken = dialog.EnableCancellation();

                try
                {
                    var task = this.tw.GetInfoApi();
                    apiStatus = await dialog.WaitForAsync(this, task);
                }
                catch (WebApiException)
                {
                    apiStatus = null;
                }

                if (cancellationToken.IsCancellationRequested)
                    return;

                if (apiStatus == null)
                {
                    MessageBox.Show(Properties.Resources.ApiInfo5, Properties.Resources.ApiInfo4, MessageBoxButtons.OK, MessageBoxIcon.Information);
                    return;
                }
            }

            using (var apiDlg = new ApiInfoDialog())
            {
                apiDlg.ShowDialog(this);
            }
        }