Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use EvaluateFunctionInternalAsync method of PuppeteerSharp.ExecutionContext class

Best Puppeteer-sharp code snippet using PuppeteerSharp.ExecutionContext.EvaluateFunctionInternalAsync

ExecutionContext.cs

Source:ExecutionContext.cs

...87        /// </remarks>88        /// <seealso cref="EvaluateExpressionAsync{T}(string)"/>89        /// <returns>Task which resolves to script return value</returns>90        public Task<T> EvaluateFunctionAsync<T>(string script, params object[] args)91            => RemoteObjectTaskToObject<T>(EvaluateFunctionInternalAsync(true, script, args));92        internal async Task<JSHandle> EvaluateFunctionHandleAsync(string script, params object[] args)93            => CreateJSHandle(await EvaluateFunctionInternalAsync(false, script, args).ConfigureAwait(false));94        /// <summary>95        /// The method iterates JavaScript heap and finds all the objects with the given prototype.96        /// </summary>97        /// <returns>A task which resolves to a handle to an array of objects with this prototype.</returns>98        /// <param name="prototypeHandle">A handle to the object prototype.</param>99        public async Task<JSHandle> QueryObjectsAsync(JSHandle prototypeHandle)100        {101            if (prototypeHandle.Disposed)102            {103                throw new PuppeteerException("Prototype JSHandle is disposed!");104            }105            if (prototypeHandle.RemoteObject.ObjectId == null)106            {107                throw new PuppeteerException("Prototype JSHandle must not be referencing primitive value");108            }109            var response = await _client.SendAsync<RuntimeQueryObjectsResponse>("Runtime.queryObjects", new RuntimeQueryObjectsRequest110            {111                PrototypeObjectId = prototypeHandle.RemoteObject.ObjectId112            }).ConfigureAwait(false);113            return CreateJSHandle(response.Objects);114        }115        private async Task<T> RemoteObjectTaskToObject<T>(Task<RemoteObject> remote)116        {117            var response = await remote.ConfigureAwait(false);118            return response == null ? default : (T)RemoteObjectHelper.ValueFromRemoteObject<T>(response);119        }120        private Task<RemoteObject> EvaluateExpressionInternalAsync(bool returnByValue, string script)121            => ExecuteEvaluationAsync("Runtime.evaluate", new Dictionary<string, object>122            {123                ["expression"] = _sourceUrlRegex.IsMatch(script) ? script : $"{script}\n{_evaluationScriptSuffix}",124                ["contextId"] = _contextId,125                ["returnByValue"] = returnByValue,126                ["awaitPromise"] = true,127                ["userGesture"] = true128            });129        private Task<RemoteObject> EvaluateFunctionInternalAsync(bool returnByValue, string script, params object[] args)130            => ExecuteEvaluationAsync("Runtime.callFunctionOn", new RuntimeCallFunctionOnRequest131            {132                FunctionDeclaration = $"{script}\n{_evaluationScriptSuffix}\n",133                ExecutionContextId = _contextId,134                Arguments = args.Select(FormatArgument),135                ReturnByValue = returnByValue,136                AwaitPromise = true,137                UserGesture = true138            });139        private async Task<RemoteObject> ExecuteEvaluationAsync(string method, object args)140        {141            try142            {143                var response = await _client.SendAsync<EvaluateHandleResponse>(method, args).ConfigureAwait(false);...

EvaluateFunctionInternalAsync

Using AI Code Generation

1var page = await browser.NewPageAsync();2var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");3Console.WriteLine(result);4var page = await browser.NewPageAsync();5var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");6Console.WriteLine(result);7var page = await browser.NewPageAsync();8var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");9Console.WriteLine(result);10var page = await browser.NewPageAsync();11var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");12Console.WriteLine(result);13var page = await browser.NewPageAsync();14var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");15Console.WriteLine(result);16var page = await browser.NewPageAsync();17var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");18Console.WriteLine(result);19var page = await browser.NewPageAsync();20var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");21Console.WriteLine(result);22var page = await browser.NewPageAsync();23var result = await page.EvaluateFunctionAsync<int>("() => 1 +

EvaluateFunctionInternalAsync

Using AI Code Generation

1var page = await browser.NewPageAsync();2var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");3var page = await browser.NewPageAsync();4var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");5var page = await browser.NewPageAsync();6var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");7var page = await browser.NewPageAsync();8var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");9var page = await browser.NewPageAsync();10var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");11var page = await browser.NewPageAsync();12var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");13var page = await browser.NewPageAsync();14var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");

EvaluateFunctionInternalAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            var options = new LaunchOptions { Headless = false };9            using (var browser = await Puppeteer.LaunchAsync(options))10            {11                var page = await browser.NewPageAsync();12                var result = await page.EvaluateFunctionAsync("() => 1 + 2");13                Console.WriteLine(result);14            }15        }16    }17}18using System;19using System.Threading.Tasks;20using PuppeteerSharp;21{22    {23        static async Task Main(string[] args)24        {25            var options = new LaunchOptions { Headless = false };26            using (var browser = await Puppeteer.LaunchAsync(options))27            {28                var page = await browser.NewPageAsync();29                var result = await page.EvaluateFunctionAsync("() => 1 + 2");30                Console.WriteLine(result);31            }32        }33    }34}35using System;36using System.Threading.Tasks;37using PuppeteerSharp;38{39    {40        static async Task Main(string[] args)41        {42            var options = new LaunchOptions { Headless = false };43            using (var browser = await Puppeteer.LaunchAsync(options))44            {45                var page = await browser.NewPageAsync();46                var result = await page.EvaluateFunctionHandleAsync("() => 1 + 2");47                Console.WriteLine(result);48            }49        }50    }51}52using System;53using System.Threading.Tasks;54using PuppeteerSharp;55{56    {57        static async Task Main(string[] args)

EvaluateFunctionInternalAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);9            var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false, DefaultViewport = null });10            var page = await browser.NewPageAsync();11            var result = await page.EvaluateFunctionAsync<int>("() => 1 + 2");12            Console.WriteLine(result);13            await browser.CloseAsync();14        }15    }16}17using System;18using System.Threading.Tasks;19using PuppeteerSharp;20{21    {22        static async Task Main(string[] args)23        {24            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);25            var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false, DefaultViewport = null });26            var page = await browser.NewPageAsync();27            var result = await page.EvaluateFunctionHandleAsync("() => document.body");28            Console.WriteLine(result.JsonValue);29            await browser.CloseAsync();30        }31    }32}33using System;34using System.Threading.Tasks;35using PuppeteerSharp;36{37    {38        static async Task Main(string[] args)39        {40            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);41            var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false, DefaultViewport = null });42            var page = await browser.NewPageAsync();43            var result = await page.QuerySelectorAsync("body");44            Console.WriteLine(result.JsonValue);45            await browser.CloseAsync();46        }47    }48}

EvaluateFunctionInternalAsync

Using AI Code Generation

1var page = await browser.NewPageAsync();2var context = await page.GetContextAsync();3var result = await context.EvaluateFunctionAsync("() => document.querySelector('input[title=\"Search\"]').value");4Console.WriteLine(result);5var page = await browser.NewPageAsync();6var context = await page.GetContextAsync();7var result = await context.EvaluateFunctionHandleAsync("() => document.querySelector('input[title=\"Search\"]').value");8Console.WriteLine(result);9var page = await browser.NewPageAsync();10var context = await page.GetContextAsync();11var result = await context.EvaluateFunctionHandleInternalAsync("() => document.querySelector('input[title=\"Search\"]').value");12Console.WriteLine(result);13var page = await browser.NewPageAsync();14var context = await page.GetContextAsync();15var result = await context.EvaluateHandleAsync("() => document.querySelector('input[title=\"Search\"]').value");16Console.WriteLine(result);17var page = await browser.NewPageAsync();18var context = await page.GetContextAsync();19var result = await context.EvaluateHandleInternalAsync("() => document.querySelector('input[title=\"Search\"]').value");20Console.WriteLine(result);21var page = await browser.NewPageAsync();22var context = await page.GetContextAsync();23var result = await context.GetPropertiesAsync("() => document.querySelector('input[title=\"Search\"]').value");24Console.WriteLine(result);25var page = await browser.NewPageAsync();

EvaluateFunctionInternalAsync

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();

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.