Headless |
Headless browser showing the HTML result of a report: used by the renderers to print the result (HTML to PDF)
or to take pictures of the JavaScript views (charts, gauges and maps for the PDF and Excel renderers)
Inheritance HierarchyNamespace: Seal.Renderer
Assembly: SealLibrary (in SealLibrary.dll) Version: 10.2.0.0+da7797057e6d5ef3b02633ee3e36991921c726cb
SyntaxC#
public class HeadlessBrowser : IAsyncDisposable
The HeadlessBrowser type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | HeadlessBrowser | Initializes a new instance of the HeadlessBrowser class |
Methods| Name | Description | |
|---|---|---|
| DisposeAsync | Close the page and the browser |
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object) |
 | GetChromiumPath | Returns the path of the Chromium executable, the browser is downloaded at first use into the Assemblies folder of the repository |
| GetElementPicture | Returns the picture (PNG) of an element of the page |
| GetHashCode | Serves as the default hash function. (Inherited from Object) |
| GetType | Gets the Type of the current instance. (Inherited from Object) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object) |
| Open | Launch the browser and show an HTML result file, the page is returned when its resources are loaded and its scripts executed |
| ToString | Returns a string that represents the current object. (Inherited from Object) |
Fields| Name | Description | |
|---|---|---|
 | Browser | The browser |
| ChromiumRevisionLinux | Chromium revision for Linux (nearest snapshot of the same branch point) |
| ChromiumRevisionWindows | Headless browser: an unbranded Chromium build (BSD-3-Clause, no Google Chrome terms of service), downloaded at first use from the chromium-browser-snapshots bucket into Assemblies\Chromium. The revision is pinned to the nearest snapshot of the Chrome 153 stable branch point (September 2026). To upgrade: take chromium_main_branch_position of the current stable release from https://chromiumdash.appspot.com/fetch_releases?channel=Stable&platform=Windows&num=1 and use the nearest revision that exists in https://storage.googleapis.com/chromium-browser-snapshots/Win_x64/ |
| Page | The page showing the HTML result |
| ViewportHeight | Height in pixels of the browser viewport showing the HTML result |
| ViewportWidth | Width in pixels of the browser viewport showing the HTML result |
See Also