Table of Contents

Getting Started

Install

dotnet add package Selenium.WebDriver.BiDi.Cdp

Connect and run a command

Enable the WebSocket URL on ChromeOptions, obtain a BiDi session, then get a CDP entry point for a browsing context (tab):

using OpenQA.Selenium;
using OpenQA.Selenium.Chrome;
using Selenium.WebDriver.BiDi.Cdp;

await using var driver = new ChromeDriver(new ChromeOptions { UseWebSocketUrl = true });
await using var bidi = await driver.AsBiDiAsync();

var tab = (await bidi.BrowsingContext.GetTreeAsync()).Contexts[0].Context;

// Your entry point
var cdp = await tab.AsCdpAsync();

// Capture a screenshot
var result = await cdp.Page.CaptureScreenshotAsync();
Console.WriteLine($"Screenshot data length: {result.Data.Length}");

Next steps

  • Browse the API reference for every supported CDP domain.
  • Read the Introduction for background on how CDP is tunnelled over WebDriver BiDi.
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