How to use FrameEvalOnSelectorOptions class of Microsoft.Playwright package

Best Playwright-dotnet code snippet using Microsoft.Playwright.FrameEvalOnSelectorOptions

IFrame.cs

Source:IFrame.cs

...321        /// expression.322        /// </param>323        /// <param name="arg">Optional argument to pass to <paramref name="expression"/>.</param>324        /// <param name="options">Call options</param>325        Task<T> EvalOnSelectorAsync<T>(string selector, string expression, object? arg = default, FrameEvalOnSelectorOptions? options = default);326        /// <summary>327        /// <para>Returns the return value of <paramref name="expression"/>.</para>328        /// <para>329        /// The method finds all elements matching the specified selector within the frame and330        /// passes an array of matched elements as a first argument to <paramref name="expression"/>.331        /// See <a href="https://playwright.dev/dotnet/docs/selectors">Working with selectors</a>332        /// for more details.333        /// </para>334        /// <para>335        /// If <paramref name="expression"/> returns a <see cref="Task"/>, then <see cref="IFrame.EvalOnSelectorAllAsync"/>336        /// would wait for the promise to resolve and return its value.337        /// </para>338        /// <para>Examples:</para>339        /// <code>var divsCount = await frame.EvalOnSelectorAllAsync&lt;bool&gt;("div", "(divs, min) =&gt; divs.length &gt;= min", 10);</code>...

FrameSynchronous.cs

Source:FrameSynchronous.cs

...1166    /// expression.1167    /// </param>1168    /// <param name="arg">Optional argument to pass to <paramref name="expression"/>.</param>1169    /// <param name="options">Call options</param>1170    public static T EvalOnSelector<T>(this IFrame frame, string selector, string expression, object? arg = null, FrameEvalOnSelectorOptions? options = null)1171    {1172        return frame.EvalOnSelectorAsync<T>(selector, expression, arg).GetAwaiter().GetResult();1173    }1174    /// <summary>1175    /// <para>Returns the return value of <paramref name="expression"/>.</para>1176    /// <para>1177    /// The method finds all elements matching the specified selector within the frame and1178    /// passes an array of matched elements as a first argument to <paramref name="expression"/>.1179    /// See <a href="./selectors.md">Working with selectors</a> for more details.1180    /// </para>1181    /// <para>1182    /// If <paramref name="expression"/> returns a <see cref="Task"/>, then <see cref="IFrame.EvalOnSelectorAllAsync"/>1183    /// would wait for the promise to resolve and return its value.1184    /// </para>...

Frame.cs

Source:Frame.cs

...429                selector: selector,430                script,431                arg: ScriptsHelper.SerializedArgument(arg),432                strict: null).ConfigureAwait(false));433        public async Task<T> EvalOnSelectorAsync<T>(string selector, string expression, object arg = null, FrameEvalOnSelectorOptions options = null)434            => ScriptsHelper.ParseEvaluateResult<T>(await _channel.EvalOnSelectorAsync(435                selector: selector,436                expression,437                arg: ScriptsHelper.SerializedArgument(arg),438                strict: options?.Strict).ConfigureAwait(false));439        public async Task<JsonElement?> EvalOnSelectorAllAsync(string selector, string script, object arg = null)440            => ScriptsHelper.ParseEvaluateResult<JsonElement?>(await _channel.EvalOnSelectorAllAsync(441                selector: selector,442                script,443                arg: ScriptsHelper.SerializedArgument(arg)).ConfigureAwait(false));444        public async Task<T> EvalOnSelectorAllAsync<T>(string selector, string script, object arg = null)445            => ScriptsHelper.ParseEvaluateResult<T>(await _channel.EvalOnSelectorAllAsync(446                selector: selector,447                script,...

Locator.cs

Source:Locator.cs

...114            => _frame.EvalOnSelectorAllAsync<T>(_selector, expression, arg);115        public Task<JsonElement?> EvaluateAsync(string expression, object arg = null, LocatorEvaluateOptions options = null)116            => EvaluateAsync<JsonElement?>(expression, arg, options);117        public Task<T> EvaluateAsync<T>(string expression, object arg = null, LocatorEvaluateOptions options = null)118            => _frame.EvalOnSelectorAsync<T>(_selector, expression, arg, ConvertOptions<FrameEvalOnSelectorOptions>(options));119        public async Task<IJSHandle> EvaluateHandleAsync(string expression, object arg = null, LocatorEvaluateHandleOptions options = null)120            => await WithElementAsync(async (e, _) => await e.EvaluateHandleAsync(expression, arg).ConfigureAwait(false), options).ConfigureAwait(false);121        public async Task FillAsync(string value, LocatorFillOptions options = null)122            => await _frame.FillAsync(_selector, value, ConvertOptions<FrameFillOptions>(options)).ConfigureAwait(false);123        public Task FocusAsync(LocatorFocusOptions options = null)124            => _frame.FocusAsync(_selector, ConvertOptions<FrameFocusOptions>(options));125        IFrameLocator ILocator.FrameLocator(string selector) =>126            new FrameLocator(_frame, $"{_selector} >> {selector}");127        public Task<string> GetAttributeAsync(string name, LocatorGetAttributeOptions options = null)128            => _frame.GetAttributeAsync(_selector, name, ConvertOptions<FrameGetAttributeOptions>(options));129        public Task HoverAsync(LocatorHoverOptions options = null)130            => _frame.HoverAsync(_selector, ConvertOptions<FrameHoverOptions>(options));131        public Task<string> InnerHTMLAsync(LocatorInnerHTMLOptions options = null)132            => _frame.InnerHTMLAsync(_selector, ConvertOptions<FrameInnerHTMLOptions>(options));...

FrameEvalOnSelectorOptions.cs

Source:FrameEvalOnSelectorOptions.cs

...35using System.Threading.Tasks;36#nullable enable37namespace Microsoft.Playwright38{39    public class FrameEvalOnSelectorOptions40    {41        public FrameEvalOnSelectorOptions() { }42        public FrameEvalOnSelectorOptions(FrameEvalOnSelectorOptions clone)43        {44            if (clone == null)45            {46                return;47            }48            Strict = clone.Strict;49        }50        /// <summary>51        /// <para>52        /// When true, the call requires selector to resolve to a single element. If given selector53        /// resolves to more then one element, the call throws an exception.54        /// </para>55        /// </summary>56        [JsonPropertyName("strict")]...

FrameEvalOnSelectorOptions

Using AI Code Generation

1using Microsoft.Playwright;2using System.Threading.Tasks;3{4    {5        static async Task Main(string[] args)6        {7            using var playwright = await Playwright.CreateAsync();8            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions { Headless = false });9            var context = await browser.NewContextAsync();10            var page = await context.NewPageAsync();11            await page.TypeAsync("input[type='text']", "Playwright");12            await page.ClickAsync("input[type='submit']");13            await page.FrameEvalOnSelectorAsync("iframe", "frame", "frame => frame.contentWindow.document.querySelector('a').href");14        }15    }16}

FrameEvalOnSelectorOptions

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Firefox.LaunchAsync(new BrowserTypeLaunchOptions10            {11            });12            var page = await browser.NewPageAsync();13            await page.TypeAsync("input[name='q']", "Playwright");14            var result = await page.FrameEvalOnSelectorAsync("iframe", "iframe => iframe.contentDocument.querySelector('input[name=q]').value");15            Console.WriteLine(result);16            await browser.CloseAsync();17        }18    }19}

FrameEvalOnSelectorOptions

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions10            {11            });12            var page = await browser.NewPageAsync();13            var input = await page.QuerySelectorAsync("input[name='q']");14            await input.TypeAsync("Hello World");15            var result = await page.EvalOnSelectorAsync<string>("input[name='q']", "input => input.value");

FrameEvalOnSelectorOptions

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Collections.Generic;4using System.Linq;5using System.Text;6using System.Threading.Tasks;7{8    {9        static async Task Main(string[] args)10        {11            using var playwright = await Playwright.CreateAsync();12            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions { Headless = false });13            var page = await browser.NewPageAsync();14            await page.TypeAsync("input[name=q]", "Hello World");15            await page.PressAsync("input[name=q]", "Enter");16            await page.WaitForNavigationAsync();17            await page.ScreenshotAsync("screenshot.png");18            await browser.CloseAsync();19        }20    }21}22using Microsoft.Playwright;23using System;24using System.Collections.Generic;25using System.Linq;26using System.Text;27using System.Threading.Tasks;28{29    {30        static async Task Main(string[] args)31        {32            using var playwright = await Playwright.CreateAsync();33            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions { Headless = false });34            var page = await browser.NewPageAsync();35            await page.TypeAsync("input[name=q]", "Hello World");36            await page.PressAsync("input[name=q]", "Enter");37            await page.WaitForNavigationAsync();38            await page.ScreenshotAsync("screenshot.png");39            await browser.CloseAsync();40        }41    }42}43using Microsoft.Playwright;44using System;45using System.Collections.Generic;

FrameEvalOnSelectorOptions

Using AI Code Generation

1using System;2using Microsoft.Playwright;3using System.Threading.Tasks;4using System.Linq;5{6    {7        static async Task Main(string[] args)8        {9            using var playwright = await Playwright.CreateAsync();10            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions11            {12            });13            var page = await browser.NewPageAsync();14            var searchBox = await page.QuerySelectorAsync("input[title='Search']");15            await page.FillAsync("input[title='Search']", "Playwright");16            await page.PressAsync("input[title='Search']", "Enter");17            await page.WaitForSelectorAsync("text='Playwright - Microsoft Playwright'");18            await page.ClickAsync("text='Playwright - Microsoft Playwright'");19            var result = await page.EvalOnSelectorAsync<int>("text='Playwright - Microsoft Playwright'", "node => node.innerText");20            Console.WriteLine(result);21        }22    }23}

FrameEvalOnSelectorOptions

Using AI Code Generation

1using Microsoft.Playwright;2using Microsoft.Playwright.Helpers;3using Microsoft.Playwright.Transport.Channels;4using System;5using System.Collections.Generic;6using System.IO;7using System.Linq;8using System.Text;9using System.Threading.Tasks;10{11    {12        static async Task Main(string[] args)13        {14            using var playwright = await Playwright.CreateAsync();15            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions16            {17            });18            var context = await browser.NewContextAsync();19            var page = await context.NewPageAsync();20            await page.ClickAsync("input[title='Search']");21            await page.TypeAsync("input[title='Search']", "Hello World");22            await page.Keyboard.PressAsync("Enter");23            var frame = page.MainFrame.ChildFrames.FirstOrDefault();24            var selector = "h3.LC20lb.DKV0Md";25            {26                Args = new object[] { "Hello World" }27            };28            var result = await frame.EvalOnSelectorAsync(options);29            Console.WriteLine(result);30        }31    }32}33const selector = arguments[0];34const text = arguments[1];35const element = document.querySelector(selector);36return element.textContent === text;

FrameEvalOnSelectorOptions

Using AI Code Generation

1using Microsoft.Playwright; 2using System; 3using System.Threading.Tasks; 4{ 5    { 6        static async Task Main(string[] args) 7        { 8            using var playwright = await Playwright.CreateAsync(); 9            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions 10            { 11            }); 12            var context = await browser.NewContextAsync(); 13            var page = await context.NewPageAsync(); 14            await page.TypeAsync("input[aria-label='Search']", "Hello World"); 15            await page.ClickAsync("input[value='Google Search']"); 16            await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded); 17            var result = await page.EvalOnSelectorAsync<string>("div[class='g']", "div", new FrameEvalOnSelectorOptions 18            { 19            }); 20            Console.WriteLine(result); 21        } 22    } 23}

FrameEvalOnSelectorOptions

Using AI Code Generation

1using Microsoft.Playwright;2using System.Threading.Tasks;3{4    {5        static async Task Main(string[] args)6        {7            using var playwright = await Playwright.CreateAsync();8            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions { Headless = true });9            var context = await browser.NewContextAsync();10            var page = await context.NewPageAsync();11            var googleFrame = page.Frames[1];12            var searchBox = await googleFrame.QuerySelectorAsync("input[name='q']");13            {14            };15            var result = await googleFrame.EvalOnSelectorAsync(options, "element => element.value");16            await browser.CloseAsync();17        }18    }19}20using Microsoft.Playwright;21using System.Threading.Tasks;22{23    {24        static async Task Main(string[] args)25        {26            using var playwright = await Playwright.CreateAsync();27            await using var browser = await playwright.Chromium.LaunchAsync(new LaunchOptions { Headless = true });28            var context = await browser.NewContextAsync();29            var page = await context.NewPageAsync();30            var googleFrame = page.Frames[1];31            var searchBox = await googleFrame.QuerySelectorAsync("input[name='q']");32            {33            };34            var result = await googleFrame.EvalOnSelectorAllAsync(options, "element => element.value");35            await browser.CloseAsync();36        }37    }38}

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.