AnimalCrossingQR.URLDialog.DownloadAsync C# (CSharp) Method

        private void DownloadAsync(string url)
        {
            if (thread != null)
                return;

            thread = new Thread(() =>
                {
                    okButton.Invoke((Action)(() =>
                        {
                            okButton.Text = "Downloading...";
                            okButton.Enabled = false;
                        }));

                    try
                    {
                        using (WebClient webClient = new WebClient())
                            downloadData = webClient.DownloadData(url);

                        memoryStream = new MemoryStream(downloadData);
                        ResultImage = (Bitmap)Bitmap.FromStream(memoryStream);

                        DialogResult = DialogResult.OK;
                    }
                    catch (WebException)
                    {
                        errorLabel.Invoke((Action)(() =>
                            {
                                errorLabel.Text = "Failed to download image. Check the URL and try again.";
                                errorLabel.Visible = true;
                            }));
                    }
                    catch (ArgumentException)
                    {
                        errorLabel.Invoke((Action)(() =>
                        {
                            errorLabel.Text = "The downloaded file is not a valid image. Check that the URL is a direct image link.";
                            errorLabel.Visible = true;
                        }));
                    }
                    catch (ThreadAbortException)
                    {
                    }
                    finally
                    {
                        thread = null;

                        try
                        {
                            okButton.Invoke((Action)(() =>
                            {
                                okButton.Text = "OK";
                                okButton.Enabled = true;
                            }));
                        }
                        catch (Exception)
                        {
                        }
                    }
                });

            thread.IsBackground = true;
            thread.Start();
        }