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How to use StartAsync method of PuppeteerSharp.LauncherBase class

Best Puppeteer-sharp code snippet using PuppeteerSharp.LauncherBase.StartAsync

LauncherBase.cs

Source:LauncherBase.cs

...94        /// <summary>95        /// Asynchronously starts Base process.96        /// </summary>97        /// <returns></returns>98        public Task StartAsync() => _currentState.StartAsync(this);99        /// <summary>100        /// Asynchronously waits for graceful Base process exit within a given timeout period.101        /// Kills the Base process if it has not exited within this period.102        /// </summary>103        /// <param name="timeout">The maximum waiting time for a graceful process exit.</param>104        /// <returns></returns>105        public Task EnsureExitAsync(TimeSpan? timeout) => timeout.HasValue106            ? _currentState.ExitAsync(this, timeout.Value)107            : _currentState.KillAsync(this);108        /// <summary>109        /// Asynchronously kills Base process.110        /// </summary>111        /// <returns></returns>112        public Task KillAsync() => _currentState.KillAsync(this);113        /// <summary>114        /// Waits for Base process exit within a given timeout.115        /// </summary>116        /// <param name="timeout">The maximum wait period.</param>117        /// <returns><c>true</c> if Base process has exited within the given <paramref name="timeout"/>,118        /// or <c>false</c> otherwise.</returns>119        public async Task<bool> WaitForExitAsync(TimeSpan? timeout)120        {121            if (timeout.HasValue)122            {123                bool taskCompleted = true;124                await _exitCompletionSource.Task.WithTimeout(125                    () =>126                    {127                        taskCompleted = false;128                    }, timeout.Value).ConfigureAwait(false);129                return taskCompleted;130            }131            await _exitCompletionSource.Task.ConfigureAwait(false);132            return true;133        }134        #endregion135        #region Private methods136        /// <summary>137        /// Set Env Variables138        /// </summary>139        /// <param name="environment">The environment.</param>140        /// <param name="customEnv">The customEnv.</param>141        /// <param name="realEnv">The realEnv.</param>142        protected static void SetEnvVariables(IDictionary<string, string> environment, IDictionary<string, string> customEnv, IDictionary realEnv)143        {144            foreach (DictionaryEntry item in realEnv)145            {146                environment[item.Key.ToString()] = item.Value.ToString();147            }148            if (customEnv != null)149            {150                foreach (var item in customEnv)151                {152                    environment[item.Key] = item.Value;153                }154            }155        }156        #endregion157        #region State machine158        /// <summary>159        /// Represents state machine for Base process instances. The happy path runs along the160        /// following state transitions: <see cref="Initial"/>161        /// -> <see cref="Starting"/>162        /// -> <see cref="Started"/>163        /// -> <see cref="Exiting"/>164        /// -> <see cref="Exited"/>.165        /// -> <see cref="Disposed"/>.166        /// </summary>167        /// <remarks>168        /// <para>169        /// This state machine implements the following state transitions:170        /// <code>171        /// State     Event              Target State Action172        /// ======== =================== ============ ==========================================================173        /// Initial  --StartAsync------> Starting     Start process and wait for endpoint174        /// Initial  --ExitAsync-------> Exited       Cleanup temp user data175        /// Initial  --KillAsync-------> Exited       Cleanup temp user data176        /// Initial  --Dispose---------> Disposed     Cleanup temp user data177        /// Starting --StartAsync------> Starting     -178        /// Starting --ExitAsync-------> Exiting      Wait for process exit179        /// Starting --KillAsync-------> Killing      Kill process180        /// Starting --Dispose---------> Disposed     Kill process; Cleanup temp user data;  throw ObjectDisposedException on outstanding async operations;181        /// Starting --endpoint ready--> Started      Complete StartAsync successfully; Log process start182        /// Starting --process exit----> Exited       Complete StartAsync with exception; Cleanup temp user data183        /// Started  --StartAsync------> Started      -184        /// Started  --EnsureExitAsync-> Exiting      Start exit timer; Log process exit185        /// Started  --KillAsync-------> Killing      Kill process; Log process exit186        /// Started  --Dispose---------> Disposed     Kill process; Log process exit; Cleanup temp user data; throw ObjectDisposedException on outstanding async operations;187        /// Started  --process exit----> Exited       Log process exit; Cleanup temp user data188        /// Exiting  --StartAsync------> Exiting      - (StartAsync throws InvalidOperationException)189        /// Exiting  --ExitAsync-------> Exiting      -190        /// Exiting  --KillAsync-------> Killing      Kill process191        /// Exiting  --Dispose---------> Disposed     Kill process; Cleanup temp user data; throw ObjectDisposedException on outstanding async operations;192        /// Exiting  --exit timeout----> Killing      Kill process193        /// Exiting  --process exit----> Exited       Cleanup temp user data; complete outstanding async operations;194        /// Killing  --StartAsync------> Killing      - (StartAsync throws InvalidOperationException)195        /// Killing  --KillAsync-------> Killing      -196        /// Killing  --Dispose---------> Disposed     Cleanup temp user data; throw ObjectDisposedException on outstanding async operations;197        /// Killing  --process exit----> Exited       Cleanup temp user data; complete outstanding async operations;198        /// Exited   --StartAsync------> Killing      - (StartAsync throws InvalidOperationException)199        /// Exited   --KillAsync-------> Exited       -200        /// Exited   --Dispose---------> Disposed     -201        /// Disposed --StartAsync------> Disposed     -202        /// Disposed --KillAsync-------> Disposed     -203        /// Disposed --Dispose---------> Disposed     -204        /// </code>205        /// </para>206        /// </remarks>207        protected abstract class State208        {209            #region Predefined states210            /// <summary>211            /// Set initial state.212            /// </summary>213            public static readonly State Initial = new InitialState();214            private static readonly StartingState Starting = new StartingState();215            private static readonly StartedState Started = new StartedState();216            private static readonly ExitingState Exiting = new ExitingState();217            private static readonly KillingState Killing = new KillingState();218            private static readonly ExitedState Exited = new ExitedState();219            private static readonly DisposedState Disposed = new DisposedState();220            #endregion221            #region Properties222            /// <summary>223            /// Get If process exists.224            /// </summary>225            public bool IsExiting => this == Killing || this == Exiting;226            /// <summary>227            /// Get If process is exited.228            /// </summary>229            public bool IsExited => this == Exited || this == Disposed;230            #endregion231            #region Methods232            /// <summary>233            /// Attempts thread-safe transitions from a given state to this state.234            /// </summary>235            /// <param name="p">The Base process</param>236            /// <param name="fromState">The state from which state transition takes place</param>237            /// <returns>Returns <c>true</c> if transition is successful, or <c>false</c> if transition238            /// cannot be made because current state does not equal <paramref name="fromState"/>.</returns>239            protected bool TryEnter(LauncherBase p, State fromState)240            {241                if (Interlocked.CompareExchange(ref p._currentState, this, fromState) == fromState)242                {243                    fromState.Leave(p);244                    return true;245                }246                return false;247            }248            /// <summary>249            /// Notifies that state machine is about to transition to another state.250            /// </summary>251            /// <param name="p">The Base process</param>252            protected virtual void Leave(LauncherBase p)253            {254            }255            /// <summary>256            /// Handles process start request.257            /// </summary>258            /// <param name="p">The Base process</param>259            /// <returns></returns>260            public virtual Task StartAsync(LauncherBase p) => Task.FromException(InvalidOperation("start"));261            /// <summary>262            /// Handles process exit request.263            /// </summary>264            /// <param name="p">The Base process</param>265            /// <param name="timeout">The maximum waiting time for a graceful process exit.</param>266            /// <returns></returns>267            public virtual Task ExitAsync(LauncherBase p, TimeSpan timeout) => Task.FromException(InvalidOperation("exit"));268            /// <summary>269            /// Handles process kill request.270            /// </summary>271            /// <param name="p">The Base process</param>272            /// <returns></returns>273            public virtual Task KillAsync(LauncherBase p) => Task.FromException(InvalidOperation("kill"));274            /// <summary>275            /// Handles wait for process exit request.276            /// </summary>277            /// <param name="p">The Base process</param>278            /// <returns></returns>279            public virtual Task WaitForExitAsync(LauncherBase p) => p._exitCompletionSource.Task;280            /// <summary>281            /// Handles disposal of process and temporary user directory282            /// </summary>283            /// <param name="p"></param>284            public virtual void Dispose(LauncherBase p) => Disposed.EnterFrom(p, this);285            /// <inheritdoc />286            public override string ToString()287            {288                string name = GetType().Name;289                return name.Substring(0, name.Length - "State".Length);290            }291            private Exception InvalidOperation(string operationName)292                => new InvalidOperationException($"Cannot {operationName} in state {this}");293            /// <summary>294            /// Kills process if it is still alive.295            /// </summary>296            /// <param name="p"></param>297            private static void Kill(LauncherBase p)298            {299                try300                {301                    if (!p.Process.HasExited)302                    {303                        p.Process.Kill();304                    }305                }306                catch (InvalidOperationException)307                {308                    // Ignore309                }310            }311            #endregion312            #region Concrete state classes313            private class InitialState : State314            {315                public override Task StartAsync(LauncherBase p) => Starting.EnterFromAsync(p, this);316                public override Task ExitAsync(LauncherBase p, TimeSpan timeout)317                {318                    Exited.EnterFrom(p, this);319                    return Task.CompletedTask;320                }321                public override Task KillAsync(LauncherBase p)322                {323                    Exited.EnterFrom(p, this);324                    return Task.CompletedTask;325                }326                public override Task WaitForExitAsync(LauncherBase p) => Task.FromException(InvalidOperation("wait for exit"));327            }328            private class StartingState : State329            {330                public Task EnterFromAsync(LauncherBase p, State fromState)331                {332                    if (!TryEnter(p, fromState))333                    {334                        // Delegate StartAsync to current state, because it has already changed since335                        // transition to this state was initiated.336                        return p._currentState.StartAsync(p);337                    }338                    return StartCoreAsync(p);339                }340                public override Task StartAsync(LauncherBase p) => p._startCompletionSource.Task;341                public override Task ExitAsync(LauncherBase p, TimeSpan timeout) => Exiting.EnterFromAsync(p, this, timeout);342                public override Task KillAsync(LauncherBase p) => Killing.EnterFromAsync(p, this);343                public override void Dispose(LauncherBase p)344                {345                    p._startCompletionSource.TrySetException(new ObjectDisposedException(p.ToString()));346                    base.Dispose(p);347                }348                private async Task StartCoreAsync(LauncherBase p)349                {350                    var output = new StringBuilder();351                    void OnProcessDataReceivedWhileStarting(object sender, DataReceivedEventArgs e)352                    {353                        if (e.Data != null)354                        {355                            output.AppendLine(e.Data);356                            var match = Regex.Match(e.Data, "^DevTools listening on (ws:\\/\\/.*)");357                            if (match.Success)358                            {359                                p._startCompletionSource.TrySetResult(match.Groups[1].Value);360                            }361                        }362                    }363                    void OnProcessExitedWhileStarting(object sender, EventArgs e)364                        => p._startCompletionSource.TrySetException(new ProcessException($"Failed to launch Base! {output}"));365                    void OnProcessExited(object sender, EventArgs e) => Exited.EnterFrom(p, p._currentState);366                    p.Process.ErrorDataReceived += OnProcessDataReceivedWhileStarting;367                    p.Process.Exited += OnProcessExitedWhileStarting;368                    p.Process.Exited += OnProcessExited;369                    CancellationTokenSource cts = null;370                    try371                    {372                        p.Process.Start();373                        await Started.EnterFromAsync(p, this).ConfigureAwait(false);374                        p.Process.BeginErrorReadLine();375                        int timeout = p._options.Timeout;376                        if (timeout > 0)377                        {378                            cts = new CancellationTokenSource(timeout);379                            cts.Token.Register(() => p._startCompletionSource.TrySetException(380                                new ProcessException($"Timed out after {timeout} ms while trying to connect to Base!")));381                        }382                        try383                        {384                            await p._startCompletionSource.Task.ConfigureAwait(false);385                            await Started.EnterFromAsync(p, this).ConfigureAwait(false);386                        }387                        catch388                        {389                            await Killing.EnterFromAsync(p, this).ConfigureAwait(false);390                            throw;391                        }392                    }393                    finally394                    {395                        cts?.Dispose();396                        p.Process.Exited -= OnProcessExitedWhileStarting;397                        p.Process.ErrorDataReceived -= OnProcessDataReceivedWhileStarting;398                    }399                }400            }401            private class StartedState : State402            {403                public Task EnterFromAsync(LauncherBase p, State fromState)404                {405                    if (TryEnter(p, fromState))406                    {407                    }408                    return Task.CompletedTask;409                }410                protected override void Leave(LauncherBase p) { }411                public override Task StartAsync(LauncherBase p) => Task.CompletedTask;412                public override Task ExitAsync(LauncherBase p, TimeSpan timeout) => Exiting.EnterFromAsync(p, this, timeout);413                public override Task KillAsync(LauncherBase p) => Killing.EnterFromAsync(p, this);414            }415            private class ExitingState : State416            {417                public Task EnterFromAsync(LauncherBase p, State fromState, TimeSpan timeout)418                    => !TryEnter(p, fromState) ? p._currentState.ExitAsync(p, timeout) : ExitAsync(p, timeout);419                public override async Task ExitAsync(LauncherBase p, TimeSpan timeout)420                {421                    var waitForExitTask = WaitForExitAsync(p);422                    await waitForExitTask.WithTimeout(423                        async () =>424                        {425                            await Killing.EnterFromAsync(p, this).ConfigureAwait(false);426                            await waitForExitTask.ConfigureAwait(false);427                        },428                        timeout,429                        CancellationToken.None).ConfigureAwait(false);430                }431                public override Task KillAsync(LauncherBase p) => Killing.EnterFromAsync(p, this);432            }433            private class KillingState : State434            {435                public async Task EnterFromAsync(LauncherBase p, State fromState)436                {437                    if (!TryEnter(p, fromState))438                    {439                        // Delegate KillAsync to current state, because it has already changed since440                        // transition to this state was initiated.441                        await p._currentState.KillAsync(p).ConfigureAwait(false);442                    }443                    try444                    {445                        if (!p.Process.HasExited)446                        {447                            p.Process.Kill();448                        }449                    }450                    catch (InvalidOperationException)451                    {452                        // Ignore453                        return;454                    }455                    await WaitForExitAsync(p).ConfigureAwait(false);456                }457                public override Task ExitAsync(LauncherBase p, TimeSpan timeout) => WaitForExitAsync(p);458                public override Task KillAsync(LauncherBase p) => WaitForExitAsync(p);459            }460            private class ExitedState : State461            {462                public void EnterFrom(LauncherBase p, State fromState)463                {464                    while (!TryEnter(p, fromState))465                    {466                        // Current state has changed since transition to this state was requested.467                        // Therefore retry transition to this state from the current state. This ensures468                        // that Leave() operation of current state is properly called.469                        fromState = p._currentState;470                        if (fromState == this)471                        {472                            return;473                        }474                    }475                    p._exitCompletionSource.TrySetResult(true);476                    p.TempUserDataDir?.Dispose();477                }478                public override Task ExitAsync(LauncherBase p, TimeSpan timeout) => Task.CompletedTask;479                public override Task KillAsync(LauncherBase p) => Task.CompletedTask;480                public override Task WaitForExitAsync(LauncherBase p) => Task.CompletedTask;481            }482            private class DisposedState : State483            {484                public void EnterFrom(LauncherBase p, State fromState)485                {486                    if (!TryEnter(p, fromState))487                    {488                        // Delegate Dispose to current state, because it has already changed since489                        // transition to this state was initiated.490                        p._currentState.Dispose(p);491                    }492                    else if (fromState != Exited)493                    {494                        Kill(p);495                        p._exitCompletionSource.TrySetException(new ObjectDisposedException(p.ToString()));496                        p.TempUserDataDir?.Dispose();497                    }498                }499                public override Task StartAsync(LauncherBase p) => throw new ObjectDisposedException(p.ToString());500                public override Task ExitAsync(LauncherBase p, TimeSpan timeout) => throw new ObjectDisposedException(p.ToString());501                public override Task KillAsync(LauncherBase p) => throw new ObjectDisposedException(p.ToString());502                public override void Dispose(LauncherBase p)503                {504                    // Nothing to do505                }506            }507            #endregion508        }509        #endregion510    }511}...

Launcher.cs

Source:Launcher.cs

...36            string executable = GetOrFetchBrowserExecutable(options);37            Process = new ChromiumLauncher(executable, options);38            try39            {40                await Process.StartAsync().ConfigureAwait(false);41                try42                {43                    var connection = await Connection44                        .Create(Process.EndPoint, options)45                        .ConfigureAwait(false);46                    var browser = await Browser47                        .CreateAsync(connection, Array.Empty<string>(), options.IgnoreHTTPSErrors, options.DefaultViewport, Process)48                        .ConfigureAwait(false);49                    await browser.WaitForTargetAsync(t => t.Type == TargetType.Page).ConfigureAwait(false);50                    return browser;51                }52                catch (Exception ex)53                {54                    throw new ProcessException("Failed to create connection", ex);...

State.cs

Source:State.cs

...17    /// This state machine implements the following state transitions:18    /// <code>19    /// State     Event              Target State Action20    /// ======== =================== ============ ==========================================================21    /// Initial  --StartAsync------> Starting     Start process and wait for endpoint22    /// Initial  --ExitAsync-------> Exited       Cleanup temp user data23    /// Initial  --KillAsync-------> Exited       Cleanup temp user data24    /// Initial  --Dispose---------> Disposed     Cleanup temp user data25    /// Starting --StartAsync------> Starting     -26    /// Starting --ExitAsync-------> Exiting      Wait for process exit27    /// Starting --KillAsync-------> Killing      Kill process28    /// Starting --Dispose---------> Disposed     Kill process; Cleanup temp user data;  throw ObjectDisposedException on outstanding async operations;29    /// Starting --endpoint ready--> Started      Complete StartAsync successfully; Log process start30    /// Starting --process exit----> Exited       Complete StartAsync with exception; Cleanup temp user data31    /// Started  --StartAsync------> Started      -32    /// Started  --EnsureExitAsync-> Exiting      Start exit timer; Log process exit33    /// Started  --KillAsync-------> Killing      Kill process; Log process exit34    /// Started  --Dispose---------> Disposed     Kill process; Log process exit; Cleanup temp user data; throw ObjectDisposedException on outstanding async operations;35    /// Started  --process exit----> Exited       Log process exit; Cleanup temp user data36    /// Exiting  --StartAsync------> Exiting      - (StartAsync throws InvalidOperationException)37    /// Exiting  --ExitAsync-------> Exiting      -38    /// Exiting  --KillAsync-------> Killing      Kill process39    /// Exiting  --Dispose---------> Disposed     Kill process; Cleanup temp user data; throw ObjectDisposedException on outstanding async operations;40    /// Exiting  --exit timeout----> Killing      Kill process41    /// Exiting  --process exit----> Exited       Cleanup temp user data; complete outstanding async operations;42    /// Killing  --StartAsync------> Killing      - (StartAsync throws InvalidOperationException)43    /// Killing  --KillAsync-------> Killing      -44    /// Killing  --Dispose---------> Disposed     Cleanup temp user data; throw ObjectDisposedException on outstanding async operations;45    /// Killing  --process exit----> Exited       Cleanup temp user data; complete outstanding async operations;46    /// Exited   --StartAsync------> Killing      - (StartAsync throws InvalidOperationException)47    /// Exited   --KillAsync-------> Exited       -48    /// Exited   --Dispose---------> Disposed     -49    /// Disposed --StartAsync------> Disposed     -50    /// Disposed --KillAsync-------> Disposed     -51    /// Disposed --Dispose---------> Disposed     -52    /// </code>53    /// </para>54    /// </remarks>55    internal abstract class State56    {57        public State(StateManager stateManager)58        {59            StateManager = stateManager;60        }61        public StateManager StateManager { get; set; }62        public bool IsExiting => this == StateManager.Killing || this == StateManager.Exiting;63        public bool IsExited => this == StateManager.Exited || this == StateManager.Disposed;64        internal virtual void Leave(LauncherBase p)65        {66        }67        public virtual Task EnterFromAsync(LauncherBase p, State fromState) => EnterFromAsync(p, fromState, TimeSpan.Zero);68        public virtual Task EnterFromAsync(LauncherBase p, State fromState, TimeSpan timeout) => Task.FromException(InvalidOperation("enterFrom"));69        public virtual Task StartAsync(LauncherBase p) => Task.FromException(InvalidOperation("start"));70        public virtual Task ExitAsync(LauncherBase p, TimeSpan timeout) => Task.FromException(InvalidOperation("exit"));71        public virtual Task KillAsync(LauncherBase p) => Task.FromException(InvalidOperation("kill"));72        public virtual Task WaitForExitAsync(LauncherBase p) => p.ExitCompletionSource.Task;73        public virtual void Dispose(LauncherBase p) => StateManager.Disposed.EnterFromAsync(p, this, TimeSpan.Zero);74        public override string ToString()75        {76            var name = GetType().Name;77            return name.Substring(0, name.Length - "State".Length);78        }79        private Exception InvalidOperation(string operationName)80            => new InvalidOperationException($"Cannot {operationName} in state {this}");81        protected static void Kill(LauncherBase p)82        {83            try...

ChromiumStartingState.cs

Source:ChromiumStartingState.cs

...14        public override Task EnterFromAsync(LauncherBase p, State fromState, TimeSpan timeout)15        {16            if (!StateManager.TryEnter(p, fromState, this))17            {18                // Delegate StartAsync to current state, because it has already changed since19                // transition to this state was initiated.20                return StateManager.CurrentState.StartAsync(p);21            }22            return StartCoreAsync(p);23        }24        public override Task StartAsync(LauncherBase p) => p.StartCompletionSource.Task;25        public override Task ExitAsync(LauncherBase p, TimeSpan timeout) => StateManager.Exiting.EnterFromAsync(p, this, timeout);26        public override Task KillAsync(LauncherBase p) => StateManager.Killing.EnterFromAsync(p, this);27        public override void Dispose(LauncherBase p)28        {29            p.StartCompletionSource.TrySetException(new ObjectDisposedException(p.ToString()));30            base.Dispose(p);31        }32        protected virtual async Task StartCoreAsync(LauncherBase p)33        {34            var output = new StringBuilder();35            void OnProcessDataReceivedWhileStarting(object sender, DataReceivedEventArgs e)36            {37                if (e.Data != null)38                {...

DisposedState.cs

Source:DisposedState.cs

...17            p.ExitCompletionSource.TrySetException(new ObjectDisposedException(p.ToString()));18            p.TempUserDataDir?.Dispose();19            return null;20        }21        public override Task StartAsync(LauncherBase p) => throw new ObjectDisposedException(p.ToString());22        public override Task ExitAsync(LauncherBase p, TimeSpan timeout) => throw new ObjectDisposedException(p.ToString());23        public override Task KillAsync(LauncherBase p) => throw new ObjectDisposedException(p.ToString());24        public override void Dispose(LauncherBase p)25        {26            // Nothing to do27        }28    }29}...

InitialState.cs

Source:InitialState.cs

...6    {7        public InitialState(StateManager stateManager) : base(stateManager)8        {9        }10        public override Task StartAsync(LauncherBase p) => StateManager.Starting.EnterFromAsync(p, this, TimeSpan.Zero);11        public override Task ExitAsync(LauncherBase p, TimeSpan timeout)12        {13            StateManager.Exited.EnterFromAsync(p, this);14            return Task.CompletedTask;15        }16        public override Task KillAsync(LauncherBase p)17        {18            StateManager.Exited.EnterFromAsync(p, this);19            return Task.CompletedTask;20        }21        public override Task WaitForExitAsync(LauncherBase p) => Task.FromException(InvalidOperation("wait for exit"));22        private Exception InvalidOperation(string v)23        {24            throw new NotImplementedException();...

StartedState.cs

Source:StartedState.cs

...11        {12            StateManager.TryEnter(p, fromState, this);13            return Task.CompletedTask;14        }15        public override Task StartAsync(LauncherBase p) => Task.CompletedTask;16        public override Task ExitAsync(LauncherBase p, TimeSpan timeout) => new ExitingState(StateManager).EnterFromAsync(p, this, timeout);17        public override Task KillAsync(LauncherBase p) => new KillingState(StateManager).EnterFromAsync(p, this);18    }19}...

StartAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            {9                ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe"10            };11            var launcher = new PuppeteerSharp.LauncherBase();12            var browser = await launcher.StartAsync(options);13            var page = await browser.NewPageAsync();14            await page.ScreenshotAsync("google.png");15            await browser.CloseAsync();16        }17    }18}

StartAsync

Using AI Code Generation

1var browser = await Puppeteer.LaunchAsync(new LaunchOptions2{3    ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",4    {5    }6});7var page = await browser.NewPageAsync();8await page.WaitForSelectorAsync("input[title='Search']");9await page.TypeAsync("input[title='Search']", "PuppeteerSharp");10await page.Keyboard.PressAsync("Enter");11await page.WaitForSelectorAsync("h3");12var h3s = await page.QuerySelectorAllAsync("h3");13foreach (var h3 in h3s)14{15    var text = await h3.EvaluateFunctionAsync<string>("node => node.innerText");16    Console.WriteLine(text);17}18await browser.CloseAsync();19var browser = await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);20var browser = await Puppeteer.LaunchAsync(new LaunchOptions21{22    ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",23    {24    }25});26var page = await browser.NewPageAsync();27await page.WaitForSelectorAsync("input[title='Search']");28await page.TypeAsync("input[title='Search']", "PuppeteerSharp");29await page.Keyboard.PressAsync("Enter");30await page.WaitForSelectorAsync("h3");31var h3s = await page.QuerySelectorAllAsync("h3");32foreach (var h3 in h3s)33{34    var text = await h3.EvaluateFunctionAsync<string>("node => node.innerText");35    Console.WriteLine(text);36}37await browser.CloseAsync();38var browser = await Puppeteer.LaunchAsync(new LaunchOptions39{40    ExecutablePath = @"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",41    {

StartAsync

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("screenshot.png");13            await browser.CloseAsync();14        }15    }16}

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