Class Browser

Provides methods to interact with a browser in Chromium.

Inheritance

System.Object

Browser

Implements

System.IDisposable

IAsyncDisposable

Namespace: PuppeteerSharp

Assembly: PuppeteerSharp.dll

Syntax

public class Browser : IDisposable

Examples

An example of using a Browser to create a Page:

var browser = await Puppeteer.LaunchAsync(new LaunchOptions());
var page = await browser.NewPageAsync();
await page.GoToAsync("https://example.com");
await browser.CloseAsync();

An example of disconnecting from and reconnecting to a Browser:

var browser = await Puppeteer.LaunchAsync(new LaunchOptions());
var browserWSEndpoint = browser.WebSocketEndpoint;
browser.Disconnect();
var browser2 = await Puppeteer.ConnectAsync(new ConnectOptions { BrowserWSEndpoint = browserWSEndpoint });
await browser2.CloseAsync();

Properties

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DefaultContext

Returns the default browser context. The default browser context can not be closed.

Declaration

public BrowserContext DefaultContext { get; }

Property Value

Type	Description
BrowserContext	The default context.

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DefaultWaitForTimeout

Dafault wait time in milliseconds. Defaults to 30 seconds.

Declaration

public int DefaultWaitForTimeout { get; set; }

Property Value

Type	Description
System.Int32

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IgnoreHTTPSErrors

Gets or Sets whether to ignore HTTPS errors during navigation

Declaration

public bool IgnoreHTTPSErrors { get; set; }

Property Value

Type	Description
System.Boolean

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IsClosed

Gets a value indicating if the browser is closed

Declaration

public bool IsClosed { get; }

Property Value

Type	Description
System.Boolean

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IsConnected

Indicates that the browser is connected.

Declaration

public bool IsConnected { get; }

Property Value

Type	Description
System.Boolean

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Process

Gets the spawned browser process. Returns null if the browser instance was created with ConnectAsync(ConnectOptions, ILoggerFactory) method.

Declaration

public Process Process { get; }

Property Value

Type	Description
System.Diagnostics.Process

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Target

A target associated with the browser.

Declaration

public Target Target { get; }

Property Value

Type	Description
Target

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WebSocketEndpoint

Gets the Browser websocket url

Declaration

public string WebSocketEndpoint { get; }

Property Value

Type	Description
System.String

Remarks

Browser websocket endpoint which can be used as an argument to ConnectAsync(ConnectOptions, ILoggerFactory). The format is ws://${host}:${port}/devtools/browser/[id] You can find the webSocketDebuggerUrl from http://${host}:${port}/json/version. Learn more about the devtools protocol https://chromedevtools.github.io/devtools-protocol and the browser endpoint https://chromedevtools.github.io/devtools-protocol/#how-do-i-access-the-browser-target

Methods

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BrowserContexts()

Returns an array of all open BrowserContext. In a newly created browser, this will return a single instance of BrowserContext

Declaration

public BrowserContext[] BrowserContexts()

Returns

Type	Description
BrowserContext[]	An array of BrowserContext objects

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CloseAsync()

Closes Chromium and all of its pages (if any were opened). The browser object itself is considered disposed and cannot be used anymore

Declaration

public Task CloseAsync()

Returns

Type	Description
System.Threading.Tasks.Task	Task

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CreateIncognitoBrowserContextAsync()

Creates a new incognito browser context. This won't share cookies/cache with other browser contexts.

Declaration

public async Task<BrowserContext> CreateIncognitoBrowserContextAsync()

Returns

Type	Description
System.Threading.Tasks.Task<BrowserContext>	Task which resolves to a new BrowserContext object

Examples

using(var browser = await Puppeteer.LaunchAsync(new LaunchOptions()))
{
    // Create a new incognito browser context.
    var context = await browser.CreateIncognitoBrowserContextAsync();
    // Create a new page in a pristine context.
    var page = await context.NewPageAsync();
    // Do stuff
    await page.GoToAsync("https://example.com");
}

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Disconnect()

Disconnects Puppeteer from the browser, but leaves the process running. After calling Disconnect(), the browser object is considered disposed and cannot be used anymore

Declaration

public void Disconnect()

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Dispose()

Declaration

public void Dispose()

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Dispose(Boolean)

Closes PuppeteerSharp.Browser.Connection and any Chromium Process that was created by Puppeteer.

Declaration

protected virtual void Dispose(bool disposing)

Parameters

Type	Name	Description
System.Boolean	disposing	Indicates whether disposal was initiated by Dispose() operation.

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DisposeAsync()

Closes PuppeteerSharp.Browser.Connection and any Chromium Process that was created by Puppeteer.

Declaration

public ValueTask DisposeAsync()

Returns

Type	Description
ValueTask	ValueTask

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GetUserAgentAsync()

Gets the browser's original user agent

Declaration

public async Task<string> GetUserAgentAsync()

Returns

Type	Description
System.Threading.Tasks.Task<System.String>	Task which resolves to the browser's original user agent

Remarks

Pages can override browser user agent with SetUserAgentAsync(String)

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GetVersionAsync()

Gets the browser's version

Declaration

public async Task<string> GetVersionAsync()

Returns

Type	Description
System.Threading.Tasks.Task<System.String>	For headless Chromium, this is similar to `HeadlessChrome/61.0.3153.0`. For non-headless, this is similar to `Chrome/61.0.3153.0`

Remarks

the format of GetVersionAsync() might change with future releases of Chromium

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NewPageAsync()

Creates a new page

Declaration

public Task<Page> NewPageAsync()

Returns

Type	Description
System.Threading.Tasks.Task<Page>	Task which resolves to a new Page object

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PagesAsync()

Returns a Task which resolves to an array of all open pages. Non visible pages, such as "background_page", will not be listed here. You can find them using PageAsync()

Declaration

public async Task<Page[]> PagesAsync()

Returns

Type	Description
System.Threading.Tasks.Task<Page[]>	Task which resolves to an array of all open pages inside the Browser. In case of multiple browser contexts, the method will return an array with all the pages in all browser contexts.

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Targets()

Returns An Array of all active targets

Declaration

public Target[] Targets()

Returns

Type	Description
Target[]	An Array of all active targets

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WaitForTargetAsync(Func<Target, Boolean>, WaitForOptions)

This searches for a target in this specific browser context.

await page.EvaluateAsync("() => window.open('https://www.example.com/')");
var newWindowTarget = await browserContext.WaitForTargetAsync((target) => target.Url == "https://www.example.com/");

Declaration

public async Task<Target> WaitForTargetAsync(Func<Target, bool> predicate, WaitForOptions options = null)

Parameters

Type	Name	Description
System.Func<Target, System.Boolean>	predicate	A function to be run for every target
WaitForOptions	options	options

Returns

Type	Description
System.Threading.Tasks.Task<Target>	Resolves to the first target found that matches the predicate function.

Events

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Closed

Raised when the Browser gets closed.

Declaration

public event EventHandler Closed

Event Type

Type	Description
System.EventHandler

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Disconnected

Raised when puppeteer gets disconnected from the Chromium instance. This might happen because one of the following

Chromium is closed or crashed
Disconnect() method was called

Declaration

public event EventHandler Disconnected

Event Type

Type	Description
System.EventHandler

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TargetChanged

Raised when the url of a target changes

Declaration

public event EventHandler<TargetChangedArgs> TargetChanged

Event Type

Type	Description
System.EventHandler<TargetChangedArgs>

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TargetCreated

Raised when a target is created, for example when a new page is opened by window.open https://developer.mozilla.org/en-US/docs/Web/API/Window/open or NewPageAsync().

Declaration

public event EventHandler<TargetChangedArgs> TargetCreated

Event Type

Type	Description
System.EventHandler<TargetChangedArgs>

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TargetDestroyed

Raised when a target is destroyed, for example when a page is closed

Declaration

public event EventHandler<TargetChangedArgs> TargetDestroyed

Event Type

Type	Description
System.EventHandler<TargetChangedArgs>

Implements

System.IDisposable

IAsyncDisposable