App.xaml.cs

using CefSharp;
using CefSharp.Wpf;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;

namespace TestCef {
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : Application {


        public App() {
            #if ANYCPU
                //Only required for PlatformTarget of AnyCPU
                CefRuntime.SubscribeAnyCpuAssemblyResolver();
            #endif
            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")
            };

            //Example of setting a command line argument
            //Enables WebRTC
            // - CEF Doesn't currently support permissions on a per browser basis see https://bitbucket.org/chromiumembedded/cef/issues/2582/allow-run-time-handling-of-media-access
            // - CEF Doesn't currently support displaying a UI for media access permissions
            //
            //NOTE: WebRTC Device Id's aren't persisted as they are in Chrome see https://bitbucket.org/chromiumembedded/cef/issues/2064/persist-webrtc-deviceids-across-restart
            settings.CefCommandLineArgs.Add("enable-media-stream");
            //https://peter.sh/experiments/chromium-command-line-switches/#use-fake-ui-for-media-stream
            settings.CefCommandLineArgs.Add("use-fake-ui-for-media-stream");
            //For screen sharing add (see https://bitbucket.org/chromiumembedded/cef/issues/2582/allow-run-time-handling-of-media-access#comment-58677180)
            settings.CefCommandLineArgs.Add("enable-usermedia-screen-capturing");

            //Example of checking if a call to Cef.Initialize has already been made, we require this for
            //our .Net 5.0 Single File Publish example, you don't typically need to perform this check
            //if you call Cef.Initialze within your WPF App constructor.
            if (!Cef.IsInitialized) {
                //Perform dependency check to make sure all relevant resources are in our output directory.
                Cef.Initialize(settings, performDependencyCheck: true, browserProcessHandler: null);
            }
        }


    }
}