C# (CSharp) Scraper.DownloadFileAsync示例

        private async void btnStart_Click(object sender, EventArgs e)
        {
            pbMain.Value = 0;

            var parser = new Parser(txtThread.Text);
            if (!parser.IsValid())
                return;

            ToggleGroupBoxes(false);
            TitleBuilder.Build(this, "Initializing");

            var threadData = await parser.BuildThreadData();
            var scraper = new Scraper(threadData, UpdateProgress);

            var files = await scraper.CollectFileURLs(cbWEBM.Checked, cbDuplicates.Checked);
            if (files == null)
                return;

            pbMain.Maximum = files.Count;

            await Task.WhenAll(files.Select(p => scraper.DownloadFileAsync(this, p, rbUID.Checked, txtPath.Text)));

            ToggleGroupBoxes(true);
            TitleBuilder.Build(this, "Completed", false);
        }