using System;
using System.IO;
using System.Threading;
using CefSharp;
using CefSharp.OffScreen;
namespace [whatever]
public class Browser
/// <summary>
/// The browser page
/// </summary>
public ChromiumWebBrowser Page { get; private set; }
/// <summary>
/// The request context
/// </summary>
public RequestContext RequestContext { get; private set; }
// chromium does not manage timeouts, so we'll implement one
private ManualResetEvent manualResetEvent = new ManualResetEvent(false);
public Browser()
var settings = new CefSettings()
//By default CefSharp will use an in-memory cache, you need to specify a Cache Folder to persist data
CachePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "CefSharp\\Cache"),
//Autoshutdown when closing
CefSharpSettings.ShutdownOnExit = true;
//Perform dependency check to make sure all relevant resources are in our output directory.
Cef.Initialize(settings, performDependencyCheck: true, browserProcessHandler: null);
RequestContext = new RequestContext();
Page = new ChromiumWebBrowser("", null, RequestContext);
PageInitialize();
/// <summary>
/// Open the given url
/// </summary>
/// <param name="url">the url</param>
/// <returns></returns>
public void OpenUrl(string url)
Page.LoadingStateChanged += PageLoadingStateChanged;
if (Page.IsBrowserInitialized)
Page.Load(url);
//create a 60 sec timeout
bool isSignalled = manualResetEvent.WaitOne(TimeSpan.FromSeconds(60));
manualResetEvent.Reset();
//As the request may actually get an answer, we'll force stop when the timeout is passed
if (!isSignalled)
Page.Stop();
catch (ObjectDisposedException)
//happens on the manualResetEvent.Reset(); when a cancelation token has disposed the context
Page.LoadingStateChanged -= PageLoadingStateChanged;
/// <summary>
/// Manage the IsLoading parameter
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void PageLoadingStateChanged(object sender, LoadingStateChangedEventArgs e)
// Check to see if loading is complete - this event is called twice, one when loading starts
// second time when it's finished
if (!e.IsLoading)
manualResetEvent.Set();
/// <summary>
/// Wait until page initialization
/// </summary>
private void PageInitialize()
SpinWait.SpinUntil(() => Page.IsBrowserInitialized);
}
现在,在我的应用程序中,我只需要执行以下操作:
public MainWindow()
InitializeComponent();
_browser = new Browser();