How to use Dispose method of PuppeteerSharp.Browser class

Best Puppeteer-sharp code snippet using PuppeteerSharp.Browser.Dispose

WebScraper.cs

Source:WebScraper.cs

...133        private async Task<Bitmap> SnapshotBitmapAsync()134        {135            var data = await m_page.ScreenshotStreamAsync();136            var image = new Bitmap(data);137            data.Dispose();138            return image;139        }140        /// <summary>141        /// Simulates key presses on page.142        /// </summary>143        /// <param name="text">Text to send to page.</param>144        public void SendKeys(string text)145        {146            SendKeysAsync(text).Wait();147        }148        private async Task SendKeysAsync(string text)149        {150            await m_page.Keyboard.TypeAsync(text);151        }152        /// <summary>153        /// Simulates moving the mouse on the page.154        ///155        /// Note: this does not move the system mouse.156        /// </summary>157        /// <param name="x">X coordinates to move mouse to.</param>158        /// <param name="y">Y coordinates to move mouse to.</param>159        public void MoveMouse(decimal x, decimal y)160        {161            MoveMouseAsync(x, y).Wait();162        }163        private async Task MoveMouseAsync(decimal x, decimal y)164        {165            await m_page.Mouse.MoveAsync(x, y);166            m_MouseX = x;167            m_MouseY = y;168        }169        /// <summary>170        /// Simulates a mouse click on page.171        /// </summary>172        /// <param name="button">Mouse button to simulate.</param>173        public void MouseClick(MouseButton button)174        {175            MouseClickAsync(button).Wait();176        }177        private async Task MouseClickAsync(MouseButton button)178        {179            await m_page.Mouse.ClickAsync(m_MouseX, m_MouseY, new ClickOptions{ Button = button == MouseButton.Left ? PuppeteerSharp.Input.MouseButton.Left : PuppeteerSharp.Input.MouseButton.Right });180        }181        /// <summary>182        /// Simulates a mouse up event on page.183        /// </summary>184        /// <param name="button">Mouse button to simulate.</param>185        public void MouseUp(MouseButton button)186        {187            MouseUpAsync(button).Wait();188            189        }190        private async Task MouseUpAsync(MouseButton button)191        {192            await m_page.Mouse.UpAsync(new ClickOptions { Button = button == MouseButton.Left ? PuppeteerSharp.Input.MouseButton.Left : PuppeteerSharp.Input.MouseButton.Right });193        }194        /// <summary>195        /// Simulates a mouse down event on page.196        /// </summary>197        /// <param name="button">Mouse button to simulate.</param>198        public void MouseDown(MouseButton button)199        {200            MouseDownAsync(button).Wait();201        }202        private async Task MouseDownAsync(MouseButton button)203        {204            await m_page.Mouse.DownAsync(new ClickOptions { Button = button == MouseButton.Left ? PuppeteerSharp.Input.MouseButton.Left : PuppeteerSharp.Input.MouseButton.Right });205        }206        /// <summary>207        /// Simulates a touch tap on a page.208        /// </summary>209        /// <param name="target">Javascript selector for element to tap on.</param>210        public void TapScreen(string target)211        {212            TapScreenAsync(target).Wait();213        }214        private async Task TapScreenAsync(string target)215        {216            await m_page.TapAsync(target);217        }218        /// <summary>219        /// Generates a pdf of the page.220        /// </summary>221        /// <returns>Stream containing the pdf data.</returns>222        public Stream CreatePdf()223        {224            var data = CreatePdfAsync();225            data.Wait();226            return data.Result;227        }228        private async Task<Stream> CreatePdfAsync()229        {230            return await m_page.PdfStreamAsync();231        }232        /// <summary>233        /// Waits for expression to be to be true.234        /// </summary>235        /// <param name="expression">Expression to wait on.</param>236        public void WaitOnScript(string expression)237        {238            WaitOnScriptAsync(expression).Wait();239        }240        private async Task WaitOnScriptAsync(string expression)241        {242            await m_page.WaitForExpressionAsync(expression);243        }244        /// <summary>245        /// Selects element on page to have focus.246        /// </summary>247        /// <param name="target">Javascript selector to make have focus.</param>248        public void Focus(string target)249        {250            FocusAsync(target).Wait();251        }252        private async Task FocusAsync(string target)253        {254            await m_page.FocusAsync(target);255        }256        /// <summary>257        /// Clicks on target element on page.258        /// </summary>259        /// <param name="target">Javascript selector of element to click on.</param>260        public void Click(string target)261        {262            ClickAsync(target).Wait();263        }264        private async Task ClickAsync(string target)265        {266            await m_page.ClickAsync(target);267        }268        /// <summary>269        /// Html content of page. Useful for scraping the html directly.270        /// </summary>271        public string Content272        {273            get274            {275                var data = m_page.GetContentAsync();276                data.Wait();277                return data.Result;278            }279            set280            {281                var data = m_page.SetContentAsync(value);282                data.Wait();283            }284        }285        /// <inheritdoc />286        /// <summary>287        /// Dispose method.288        /// This will close out chromium session.289        /// </summary>290        public void Dispose()291        {292            m_browser?.Dispose();293            m_page?.Dispose();294        }295    }296}...

SaveWebPage.xaml.cs

Source:SaveWebPage.xaml.cs

...75                }7677                //å¨æåè®°å¾å³éæµè§å¨åéæ¾èµæº78                browser.Disconnect();79                browser.Dispose();80            }81            catch(Exception ex)82            {83                EMessageBox.Show(ex.Message);84            }85        }8687        private async void btn_SaveAsPDF_Click(object sender, RoutedEventArgs e)88        {89            //æå¼ç½é¡µçæä½è·ä¸é¢æ¯ä¸æ ·ç90            try91            {92                await new PuppeteerSharp.BrowserFetcher().DownloadAsync(PuppeteerSharp.BrowserFetcher.DefaultRevision);93                var browser = await PuppeteerSharp.Puppeteer.LaunchAsync(new PuppeteerSharp.LaunchOptions94                {95                    Headless = true96                });97                var page = await browser.NewPageAsync();  //æå¼ä¸ä¸ªæ°æ ç¾98                await page.GoToAsync(this.tbox_Url.Text); //è®¿é®é¡µé¢99100                //è®¾ç½®PDFéé¡¹101                PuppeteerSharp.PdfOptions pdfOptions = new PuppeteerSharp.PdfOptions();102                pdfOptions.DisplayHeaderFooter = false; //æ¯å¦æ¾ç¤ºé¡µçé¡µè103                pdfOptions.FooterTemplate = "";   //é¡µèææ¬104105                var width = await page.EvaluateFunctionAsync<int>("function getWidth(){return document.body.scrollWidth}");106                var height = await page.EvaluateFunctionAsync<int>("function getHeight(){return document.body.scrollHeight}");107108                pdfOptions.Width = $"{width}px";109                pdfOptions.Height = $"{height}px";110111                pdfOptions.HeaderTemplate = "";   //é¡µçææ¬112                pdfOptions.Landscape = false;     //çº¸å¼ æ¹å false-åç´ true-æ°´å¹³113                pdfOptions.MarginOptions = new PuppeteerSharp.Media.MarginOptions() { Bottom = "0px", Left = "0px", Right = "0px", Top = "0px" }; //çº¸å¼ è¾¹è·ï¼éè¦è®¾ç½®å¸¦åä½çå¼ï¼é»è®¤å¼æ¯None114                pdfOptions.Scale = 1m;            //PDFç¼©æ¾ï¼ä»0-1115                pdfOptions.PrintBackground = true;116117                var fileName = Environment.CurrentDirectory + $"\\download\\{await page.GetTitleAsync()}.pdf";118119                if (System.IO.File.Exists(fileName))120                {121                    fileName = fileName.Replace(".pdf", $"{DateTime.Now.ToString("ffff")}.pdf");122                }123124                //ä¿åPDF125                await page.PdfAsync(fileName, pdfOptions);126                EMessageBox.Show($"{fileName}ä¿åæå");127128                //å¨æåè®°å¾å³éæµè§å¨åéæ¾èµæº129                browser.Disconnect();130                browser.Dispose();131            }132            catch(Exception ex)133            {134                EMessageBox.Show(ex.Message);135            }136        }137    }138}
...

Form1.cs

Source:Form1.cs

...79            //dispose browser80            if (browser != null)81            {82                await browser.CloseAsync();83                browser.Dispose();84            }85        }86    }87}...

PuppeteerBrowser.cs

Source:PuppeteerBrowser.cs

...70        {71            logger.Info($"{this.Name}: Recreating PuppeteerBrowser");72            lock (browserLock)73            {74                this.page.Dispose();75                this.browser.CloseAsync().Wait();76            }77            System.Threading.Thread.Sleep(500);78            Init();79        }80        #region IDisposable Support81        private bool disposedValue = false; // To detect redundant calls82        protected virtual void Dispose(bool disposing)83        {84            logger.Info($"{this.Name}: Disposing PuppeteerBrowser Instance");85            if (!disposedValue)86            {87                if (disposing)88                {89                    // TODO: dispose managed state (managed objects).90                }91                logger.Debug($"{this.Name}: Closing PuppeteerBrowser");92                this.browser.CloseAsync().Wait();93                logger.Debug($"{this.Name}: Closed PuppeteerBrowser");94                // TODO: free unmanaged resources (unmanaged objects) and override a finalizer below.95                // TODO: set large fields to null.96                disposedValue = true;97            }98        }99        // TODO: override a finalizer only if Dispose(bool disposing) above has code to free unmanaged resources.100        ~PuppeteerBrowser()101        {102            // Do not change this code. Put cleanup code in Dispose(bool disposing) above.103            Dispose(false);104        }105        // This code added to correctly implement the disposable pattern.106        public void Dispose()107        {108            // Do not change this code. Put cleanup code in Dispose(bool disposing) above.109            Dispose(true);110            // TODO: uncomment the following line if the finalizer is overridden above.111            GC.SuppressFinalize(this);112        }113        #endregion114    }115}...

Crawler.cs

Source:Crawler.cs

...66        if (response?.Ok ?? false)67            doc.LoadHtml(await page.GetContentAsync());68        else69        {70            this.Dispose();71            Exceptions.BadOrNoResponseException badResponseException;72            if (response == null)73                badResponseException = new("There is no response from server. Please check your connection.");74            else 75                badResponseException = new(response.StatusText);76            throw badResponseException;77        }78        await ResolvePlaces(token);79    }80    private Task ResolvePlaces(CancellationToken token)81    {82        while(true && !token.IsCancellationRequested)83        {84            if (isFirstPage)85            {86                var match = Regex.Match(page.Url, _UrlRegex);87                var lat = match.Groups["lat"].Value;88                var lon = match.Groups["lon"].Value;89                if (double.TryParse(lat, out var tempLat) && double.TryParse(lon, out var tempLon))90                {91                    sourceLat = tempLat;92                    sourceLon = tempLon;93                }94                isFirstPage = false;95            }96            var names = doc.DocumentNode.SelectNodes("//h3[contains(@class, 'section-result-title')]");97            var results = doc.DocumentNode.SelectNodes("//*[@id='pane']/div/div[1]/div/div/div[4]/div[1]/div[contains(@class, 'section-result')]");98            for (var i = 0; i < results.Count; i++)99            {100            }101        }102        if(token.IsCancellationRequested)103            Dispose();104        return Task.CompletedTask;105    }106#pragma warning disable CA1816 // Dispose methods should call SuppressFinalize107    public void Dispose()108#pragma warning restore CA1816 // Dispose methods should call SuppressFinalize109    {110        browser.Dispose();111    }112}...

Program.cs

Source:Program.cs

...50            }51            finally52            {53                if(browser != null)54                    await browser.DisposeAsync();55                if (AppConfig.ol != null)56                {57                    AppConfig.ol.Close();58                    AppConfig.ol.Dispose();59                }60            }61        }62    }63}...

BrowserService.cs

Source:BrowserService.cs

...25                Console.WriteLine("ERROR: reCAPTCHA");26        }27        public async Task<string> GetHtml()28            => await _currentPage.GetContentAsync();29        public void Dispose() 30            => _browser?.Dispose();31    }32}...

PuppeteerDocumentGenerator.cs

Source:PuppeteerDocumentGenerator.cs

...26                        Top = "1.5cm",27                        Bottom = "1.5cm"28                    },29                });30                browser.Dispose();31                return pdfData;32            }33        }34    }35}...

Dispose

Using AI Code Generation

1using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions2{3    ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",4    Args = new string[] { "--no-sandbox" }5}))6{7    var page = await browser.NewPageAsync();8    await page.ScreenshotAsync("google.png");9}10using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions11{12    ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",13    Args = new string[] { "--no-sandbox" }14}))15{16    using (var page = await browser.NewPageAsync())17    {18        await page.ScreenshotAsync("google.png");19    }20}21using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions22{23    ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",24    Args = new string[] { "--no-sandbox" }25}))26{27    using (var context = await browser.CreateIncognitoBrowserContextAsync())28    {29        var page = await context.NewPageAsync();30        await page.ScreenshotAsync("google.png");31    }32}33using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions34{35    ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",36    Args = new string[] { "--no-sandbox" }37}))38{39    using (var context = await browser.CreateIncognitoBrowserContextAsync())40    {41        var page = await context.NewPageAsync();42        using (var frame = page.MainFrame)43        {44            await frame.ScreenshotAsync("google.png");45        }46    }47}

Dispose

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            var browser = await Puppeteer.LaunchAsync(new LaunchOptions9            {10            });11            var page = await browser.NewPageAsync();12            await page.ScreenshotAsync("google.png");13            await browser.CloseAsync();14        }15    }16}

Dispose

Using AI Code Generation

1using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions2{3}))4{5    var page = await browser.NewPageAsync();6    var content = await page.GetContentAsync();7    Console.WriteLine(content);8}9using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions10{11}))12{13    using (var page = await browser.NewPageAsync())14    {15        var content = await page.GetContentAsync();16        Console.WriteLine(content);17    }18}19using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions20{21}))22{23    using (var page = await browser.NewPageAsync())24    {25        using (var frame = page.MainFrame)26        {27            var content = await frame.GetContentAsync();28            Console.WriteLine(content);29        }30    }31}32using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions33{34}))35{36    using (var page = await browser.NewPageAsync())37    {38        var element = await page.QuerySelectorAsync("h1");39        var content = await frame.GetContentAsync();40        Console.WriteLine(content);41    }42}43using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions44{45}))46{47    using (var page = await browser.NewPageAsync())48    {49        var element = await page.QuerySelectorAsync("h1");50        var handle = await element.GetPropertyAsync("textContent");51        var content = await handle.JsonValueAsync();52        Console.WriteLine(content);53    }54}55using (var browser = await Puppeteer

Dispose

Using AI Code Generation

1using System;2using PuppeteerSharp;3{4    {5        static void Main(string[] args)6        {7            Task.Run(async () =>8            {9                var browser = await Puppeteer.LaunchAsync(new LaunchOptions10                {11                });12                var page = await browser.NewPageAsync();13                await Task.Delay(5000);14                await browser.DisposeAsync();15            }).GetAwaiter().GetResult();16        }17    }18}19How to use PuppeteerSharp.Page.CloseAsync() Method to Close Page in C#20How to use PuppeteerSharp.Page.GoBackAsync() Method to Go Back in C#21How to use PuppeteerSharp.Page.GoForwardAsync() Method to Go Forward in C#22How to use PuppeteerSharp.Page.ReloadAsync() Method to Reload Page in C#23How to use PuppeteerSharp.Page.GoToAsync() Method to Go to Page in C#24How to use PuppeteerSharp.Page.SetContentAsync() Method to Set Content of Page in C#25How to use PuppeteerSharp.Page.SetViewportAsync() Method to Set Viewport of Page in C#26How to use PuppeteerSharp.Page.SetUserAgentAsync() Method to Set User Agent of Page in C#27How to use PuppeteerSharp.Page.SetJavaScriptEnabledAsync() Method to Enable or Disable JavaScript in C#28How to use PuppeteerSharp.Page.SetRequestInterceptionAsync() Method to Intercept Requests in C#29How to use PuppeteerSharp.Page.SetOfflineModeAsync() Method to Set Offline Mode in C#30How to use PuppeteerSharp.Page.SetExtraHTTPHeadersAsync() Method to Set Extra HTTP Headers in C#31How to use PuppeteerSharp.Page.SetCacheEnabledAsync() Method to Enable or Disable Cache in C#32How to use PuppeteerSharp.Page.SetBypassCSPAsync() Method to Bypass Content Security Policy in C#33How to use PuppeteerSharp.Page.SetContentAsync() Method to Set Content of Page in C#

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