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How to use CanDownloadAsync method of PuppeteerSharp.BrowserFetcher class

Best Puppeteer-sharp code snippet using PuppeteerSharp.BrowserFetcher.CanDownloadAsync

ChromiumBrowser.cs

Source:ChromiumBrowser.cs

...158                {159                    if (checkIsDownload)160                    {161                        // æ£æ¥ revisionInfo.Revision è¿ä¸ªçæ¬ç Chromium æµè§å¨ æ¯å¦ å¯ä¸è½½162                        bool isCan = await browserFetcher.CanDownloadAsync(revisionInfo.Revision);163                        if (isCan)164                        {165                            // ä¸è½½ revisionInfo.Revision è¿ä¸ªçæ¬çæ å¤´æµè§å¨ï¼å¯è½éè¦çå¾ä¸äºæ¶é´166                            await browserFetcher.DownloadAsync(revisionInfo.Revision);167                        }168                        else169                        {170                            throw new Exception($"ç¨åºæ£æµåº Chromium æµè§å¨ï¼é»è®¤çæ¬ {revisionInfo.Revision}ï¼æ æ³æ´æ°ï¼");171                        }172                    }173                    else174                    {175                        throw new Exception("ç¨åºè¿è¡ç®å½ä¸ Chromium æµè§å¨ä¸å¯ç¨ãè¯·å¼åäººåæ£æ¥ ç¨åºè¿è¡ç®å½ä¸ æ¯å¦æ£ç¡®å®è£ Chromium æµè§å¨ã");176                    }...

FrmMain.cs

Source:FrmMain.cs

...158                        this.rTxt_log.AppendText("æ å¤´æµè§å¨æ£æ¥å®æï¼éè¦æ´æ°ï¼ \n");159                        this.rTxt_log.AppendText("æ£å¨æ£æ¥æ´æ°... \n");160                    }));161                    // æ£æ¥ revisionInfo.Revision è¿ä¸ªçæ¬ç Chromium æµè§å¨ æ¯å¦ å¯ä¸è½½162                    bool isCan = await browserFetcher.CanDownloadAsync(revisionInfo.Revision);163                    if (!isCan)164                    {165                        this.Invoke(new Action(() =>166                        {167                            this.rTxt_log.AppendText($"ç¨åºæ£æµåºæ å¤´æµè§å¨ï¼é»è®¤çæ¬ {revisionInfo.Revision}ï¼æ æ³æ´æ°ï¼ \n");168                            this.btn_chromiumTest.Enabled = true;169                        }));170                        return;171                    }172                    this.Invoke(new Action(() =>173                    {174                        this.rTxt_log.AppendText("æ£å¨æ´æ°æ å¤´æµè§å¨... \n");175                    }));176                    // ä¸è½½ revisionInfo.Revision è¿ä¸ªçæ¬çæ å¤´æµè§å¨ï¼å¯è½éè¦çå¾ä¸äºæ¶é´...

BrowserFetcher.cs

Source:BrowserFetcher.cs

...52        /// </summary>53        /// <value>The platform.</value>54        public Platform Platform { get; }55        /// <summary>56        /// Proxy used by the WebClient in <see cref="DownloadAsync(int)"/> and <see cref="CanDownloadAsync(int)"/>57        /// </summary>58        public IWebProxy WebProxy59        {60            get => _webClient.Proxy;61            set => _webClient.Proxy = value;62        }63        /// <summary>64        /// Occurs when download progress in <see cref="DownloadAsync(int)"/> changes.65        /// </summary>66        public event DownloadProgressChangedEventHandler DownloadProgressChanged;67        /// <summary>68        /// Initializes a new instance of the <see cref="BrowserFetcher"/> class.69        /// </summary>70        public BrowserFetcher()71        {72            DownloadsFolder = Path.Combine(Directory.GetCurrentDirectory(), ".local-chromium");73            DownloadHost = DefaultDownloadHost;74            Platform = GetCurrentPlatform();75        }76        /// <summary>77        /// Initializes a new instance of the <see cref="BrowserFetcher"/> class.78        /// </summary>79        /// <param name="options">Fetch options.</param>80        public BrowserFetcher(BrowserFetcherOptions options)81        {82            DownloadsFolder = string.IsNullOrEmpty(options.Path) ?83               Path.Combine(Directory.GetCurrentDirectory(), ".local-chromium") :84               options.Path;85            DownloadHost = string.IsNullOrEmpty(options.Host) ? DefaultDownloadHost : options.Host;86            Platform = options.Platform ?? GetCurrentPlatform();87        }88        #region Public Methods89        /// <summary>90        /// The method initiates a HEAD request to check if the revision is available.91        /// </summary>92        /// <returns>Whether the version is available or not.</returns>93        /// <param name="revision">A revision to check availability.</param>94        public async Task<bool> CanDownloadAsync(int revision)95        {96            try97            {98                var url = GetDownloadURL(Platform, DownloadHost, revision);99                var client = WebRequest.Create(url);100                client.Proxy = _webClient.Proxy;101                client.Method = "HEAD";102                var response = await client.GetResponseAsync().ConfigureAwait(false) as HttpWebResponse;103                return response.StatusCode == HttpStatusCode.OK;104            }105            catch (WebException)106            {107                return false;108            }...

BrowserLoader.cs

Source:BrowserLoader.cs

...44            {45                Console.WriteLine(">> Installed revisions of Chrome not found - need to download new one");46            }47            Console.WriteLine(">> Start downloading Chrome...");48            bool canDownload = await browserFetcher.CanDownloadAsync(actualRevision);49            if (!canDownload)50            {51                throw new Exception($"Actual revision of Chrome ({actualRevision}) is not available to download!");52            }53            DateTime _startedAt = default;54            browserFetcher.DownloadProgressChanged += (object sender, DownloadProgressChangedEventArgs e) =>55            {56                var bytesPerSecond = 0;57                if (_startedAt == default)58                {59                    _startedAt = DateTime.Now;60                }61                TimeSpan timeSpan = DateTime.Now - _startedAt;62                if (timeSpan.TotalSeconds > 0)...

BrowserFetcherTests.cs

Source:BrowserFetcherTests.cs

...30            var revisionInfo = browserFetcher.RevisionInfo(123456);31            Server.SetRedirect(revisionInfo.Url.Substring(TestConstants.ServerUrl.Length), "/chromium-linux.zip");32            Assert.False(revisionInfo.Local);33            Assert.Equal(Platform.Linux, revisionInfo.Platform);34            Assert.False(await browserFetcher.CanDownloadAsync(100000));35            Assert.True(await browserFetcher.CanDownloadAsync(123456));36            try37            {38                revisionInfo = await browserFetcher.DownloadAsync(123456);39                Assert.True(revisionInfo.Local);40                Assert.Equal("LINUX BINARY\n", File.ReadAllText(revisionInfo.ExecutablePath));41                if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))42                {43#if NETCOREAPP //This will not be run on net4x anyway.44                    Mono.Unix.FileAccessPermissions permissions = ConvertPermissions(LinuxSysCall.ExecutableFilePermissions);45                    Assert.Equal(permissions, UnixFileSystemInfo.GetFileSystemEntry(revisionInfo.ExecutablePath).FileAccessPermissions & permissions);46#endif47                }48                Assert.Equal(new[] { 123456 }, browserFetcher.LocalRevisions());49                browserFetcher.Remove(123456);...

ActivityServices.cs

Source:ActivityServices.cs

...7    {8        public async Task GetActivity(string mssv)9        {10            var fetcher = new BrowserFetcher();11            if (await fetcher.CanDownloadAsync(BrowserFetcher.DefaultRevision))12            {13                await fetcher.DownloadAsync(BrowserFetcher.DefaultRevision);14            }15            var browser = await Puppeteer.LaunchAsync(new LaunchOptions16            {17                Headless = true18            });19            var page = await browser.NewPageAsync();20            await page.GoToAsync("http://ctct.ueh.edu.vn/modules.php?name=xemdiemmacle", WaitUntilNavigation.DOMContentLoaded);21            await page.TypeAsync("input[id='madoi']", mssv);22            await page.Keyboard.PressAsync("Enter");23            await page.WaitForNavigationAsync();24            string res = await page.GetContentAsync();25            Debug.WriteLine(res);...

CanDownloadAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            var browserFetcher = new BrowserFetcher();9            var revisionInfo = await browserFetcher.CanDownloadAsync("555668");10            Console.WriteLine(revisionInfo.Revision);11            Console.WriteLine(revisionInfo.Local);12            Console.WriteLine(revisionInfo.Url);13            Console.WriteLine(revisionInfo.FolderPath);14        }15    }16}17using System;18using System.Threading.Tasks;19using PuppeteerSharp;20{21    {22        static async Task Main(string[] args)23        {24            var browserFetcher = new BrowserFetcher();25            var revisionInfo = await browserFetcher.CanDownloadAsync("555668");26            Console.WriteLine(revisionInfo.Revision);27            Console.WriteLine(revisionInfo.Local);28            Console.WriteLine(revisionInfo.Url);29            Console.WriteLine(revisionInfo.FolderPath);30        }31    }32}33using System;34using System.Threading.Tasks;35using PuppeteerSharp;36{37    {38        static async Task Main(string[] args)39        {40            var browserFetcher = new BrowserFetcher();41            var revisionInfo = await browserFetcher.CanDownloadAsync("555668");42            Console.WriteLine(revisionInfo.Revision);43            Console.WriteLine(revisionInfo.Local);44            Console.WriteLine(revisionInfo.Url);45            Console.WriteLine(revisionInfo.FolderPath);46        }47    }48}

CanDownloadAsync

Using AI Code Generation

1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            var browserFetcher = new BrowserFetcher();9            var revisionInfo = await browserFetcher.CanDownloadAsync("506915");10            Console.WriteLine(revisionInfo.Local);11            Console.WriteLine(revisionInfo.Revision);12            Console.WriteLine(revisionInfo.Url);13        }14    }15}

CanDownloadAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            Console.WriteLine("Hello World!");9            var browserFetcher = new BrowserFetcher();10            var revisionInfo = await browserFetcher.CanDownloadAsync("chrome", "1.0.0");11            Console.WriteLine("revisionInfo: " + revisionInfo);12            Console.ReadLine();13        }14    }15}16using System;17using System.Threading.Tasks;18using PuppeteerSharp;19{20    {21        static async Task Main(string[] args)22        {23            Console.WriteLine("Hello World!");24            var browserFetcher = new BrowserFetcher();25            var revisionInfo = await browserFetcher.CanDownloadAsync("chrome", "1.0.0");26            Console.WriteLine("revisionInfo: " + revisionInfo);27            Console.ReadLine();28        }29    }30}31using System;32using System.Threading.Tasks;33using PuppeteerSharp;34{35    {36        static async Task Main(string[] args)37        {38            Console.WriteLine("Hello World!");39            var browserFetcher = new BrowserFetcher();40            var revisionInfo = await browserFetcher.CanDownloadAsync("chrome", "1.0.0");41            Console.WriteLine("revisionInfo: " + revisionInfo);42            Console.ReadLine();43        }44    }45}46using System;47using System.Threading.Tasks;48using PuppeteerSharp;49{50    {51        static async Task Main(string[] args)52        {53            Console.WriteLine("Hello World!");54            var browserFetcher = new BrowserFetcher();55            var revisionInfo = await browserFetcher.CanDownloadAsync("chrome", "1.0.0");56            Console.WriteLine("revisionInfo: " + revisionInfo);57            Console.ReadLine();58        }59    }60}

CanDownloadAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            var browserFetcher = new BrowserFetcher();9            bool canDownload = await browserFetcher.CanDownloadAsync(737027);10            Console.WriteLine(canDownload);11        }12    }13}

CanDownloadAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3{4    {5        static void Main(string[] args)6        {7            MainAsync().GetAwaiter().GetResult();8        }9        static async Task MainAsync()10        {11            var browserFetcher = new BrowserFetcher();12            bool canDownload = await browserFetcher.CanDownloadAsync(RevisionInfo.ChromeRevision);13            Console.WriteLine("canDownload = {0}", canDownload);14        }15    }16}17using System;18using System.Threading.Tasks;19{20    {21        static void Main(string[] args)22        {23            MainAsync().GetAwaiter().GetResult();24        }25        static async Task MainAsync()26        {27            var browserFetcher = new BrowserFetcher();28            var revisionInfo = await browserFetcher.DownloadAsync(RevisionInfo.ChromeRevision);29            Console.WriteLine("revisionInfo = {0}", revisionInfo);30        }31    }32}33using System;34using System.Threading.Tasks;35{36    {37        static void Main(string[] args)38        {39            MainAsync().GetAwaiter().GetResult();40        }41        static async Task MainAsync()42        {43            var browserFetcher = new BrowserFetcher();44            var revisionInfo = browserFetcher.GetRevisionInfo(RevisionInfo.ChromeRevision);45            Console.WriteLine("revisionInfo = {0}", revisionInfo);46        }47    }48}49using System;50using System.Threading.Tasks;51{52    {53        static void Main(string[] args)54        {55            MainAsync().GetAwaiter().GetResult();56        }57        static async Task MainAsync()58        {59            var browserFetcher = new BrowserFetcher();

CanDownloadAsync

Using AI Code Generation

1using System;2using System.IO;3using System.Threading.Tasks;4using PuppeteerSharp;5{6    {7        static async Task Main(string[] args)8        {9            var downloadPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), "Downloads", "chromium");10            var browserFetcher = new BrowserFetcher(downloadPath);11            bool canDownload = await browserFetcher.CanDownloadAsync(BrowserFetcher.DefaultRevision);12            Console.WriteLine("Can download Chromium: " + canDownload);13            if (canDownload)14            {15                await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);16            }17        }18    }19}20using System;21using System.IO;22using System.Threading.Tasks;23using PuppeteerSharp;24{25    {26        static async Task Main(string[] args)27        {28            var downloadPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), "Downloads", "chromium");29            var browserFetcher = new BrowserFetcher(downloadPath);30            string executablePath = await browserFetcher.GetExecutablePathAsync(BrowserFetcher.DefaultRevision);31            Console.WriteLine("Executable path: " + executablePath);32        }33    }34}35using System;36using System.IO;37using System.Threading.Tasks;38using PuppeteerSharp;39{40    {41        static async Task Main(string[] args)42        {43            var downloadPath = Path.Combine(Environment.GetFolderPath(Environment

CanDownloadAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            var browserFetcher = new BrowserFetcher();9            var revisionInfo = browserFetcher.RevisionInfo(Revision.Chrome);10            if (revisionInfo.Local)11            {12                Console.WriteLine("Browser is already downloaded");13            }14            {15                Console.WriteLine("Browser is not downloaded");16                var downloadTask = browserFetcher.DownloadAsync(Revision.Chrome);17                await downloadTask;18                Console.WriteLine("Browser is downloaded");19            }20            Console.WriteLine("Press any key to exit");21            Console.ReadKey();22        }23    }24}25using System;26using System.Threading.Tasks;27using PuppeteerSharp;28{29    {30        static async Task Main(string[] args)31        {32            var browserFetcher = new BrowserFetcher();33            var revisionInfo = browserFetcher.RevisionInfo(Revision.Chrome);34            if (revisionInfo.Local)35            {36                Console.WriteLine("Browser is already downloaded");37            }38            {39                Console.WriteLine("Browser is not downloaded");40                var downloadTask = browserFetcher.DownloadAsync(Revision.Chrome);41                await downloadTask;42                Console.WriteLine("Browser is downloaded");43            }44            Console.WriteLine("Press any key to exit");45            Console.ReadKey();46        }47    }48}49using System;50using System.Threading.Tasks;51using PuppeteerSharp;52{53    {54        static async Task Main(string[] args)55        {56            var browserFetcher = new BrowserFetcher();57            var revisionInfo = browserFetcher.RevisionInfo(Revision.Chrome);58            if (revisionInfo.Local)59            {60                Console.WriteLine("

CanDownloadAsync

Using AI Code Generation

1using System.Threading.Tasks;2using PuppeteerSharp;3{4    {5        static async Task Main(string[] args)6        {7            var browserFetcher = new BrowserFetcher();8            var revisionInfo = await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);9            var canDownload = await browserFetcher.CanDownloadAsync(BrowserFetcher.DefaultRevision);10            if (canDownload)11            {12                await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);13            }14        }15    }16}

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