private void Refresh()
        {
            RefreshStatus = "Updating image...";

            var task = Task.Factory.StartNew(() => this._webSequenceDiagramsResult = WebSequenceDiagrams.DownloadDiagram(this._wsdScript, this.Style.ToString().ToLower().Replace('_', '-'), "png", this.ApiKey));

            task.ContinueWith(t =>
            {
                this.Errors.Clear();

                if (task.Exception != null)
                {
                    RefreshStatus = "Error(s) detected";

                    var ex = task.Exception.InnerException;
                    if (ex is WebSequenceDiagramsException)
                    {
                        foreach (var error in (ex as WebSequenceDiagramsException).Errors)
                        {
                            this.Errors.Add(new ErrorViewModel(error.Line, error.Message));
                        }
                    }
                    else
                    {
                        this.Errors.Add(new ErrorViewModel(0, ex.Message));
                    }
                }
                else
                {
                    RefreshStatus = "Ready";
                }

                this.WsdImage = this._webSequenceDiagramsResult.GetBitmapImage();
                this.OnPropertyChanged(() => this.WsdImage);

                this.ActualWsdImageWidth = this._webSequenceDiagramsResult.ActualImageWidth;
            });
        }
 private void DownloadImage()
 {
     this._webSequenceDiagramsResult = WebSequenceDiagrams.DownloadDiagram(this._wsdScript, this.Style.ToString().ToLower().Replace('_', '-'), "png", this.ApiKey);
 }