CefSharp trên WPF C# - [Stream kỹ thuật]

<Window x:Class="CefSharp___WPF.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:CefSharp___WPF"
        mc:Ignorable="d"
        xmlns:cef="clr-namespace:CefSharp.Wpf;assembly=CefSharp.Wpf"
        Loaded="Window_Loaded"
        Title="MainWindow" Height="550" Width="980">
    <DockPanel>
        <TextBox x:Name="txbID" DockPanel.Dock="Top"></TextBox>
        <Button DockPanel.Dock="Top" Content="Close" Click="Button_Click"></Button>
        <Button DockPanel.Dock="Top" Content="Show" Click="Button_Click_1"></Button>
        <cef:ChromiumWebBrowser x:Name="web"></cef:ChromiumWebBrowser>
    </DockPanel>
</Window>
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using CefSharp;

namespace CefSharp___WPF
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        CookieVisitor cookie = new CookieVisitor();
        public MainWindow()
        {
            InitializeComponent();            
        }

        void ExecuteScript(string script)
        {
            web.EvaluateScriptAsync(script);
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            web.Load("http://www.howkteam.com/");
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            //string script = string.Format("document.getElementsByClassName('{0}')[0].click();", txbID.Text);
            //ExecuteScript(script);

            MessageBox.Show(web.Address);
        }

        string GetHTML(string id)
        {
            string script = string.Format("var a = document.getElementById('{0}').innerHTML; document.cookie = 'howkteam = ' + a; alert(a);", id);
            ExecuteScript(script);

            try
            {
                Cef.GetGlobalCookieManager().VisitAllCookies(cookie);
                foreach (var item in cookie.AllCookies)
                {
                    MessageBox.Show(item.Key + " \\ " + item.Value);
                }
            }
            catch { }

            return "";
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            MessageBox.Show(GetHTML(txbID.Text));
        }
    }

    public class CookieVisitor : ICookieVisitor
    {
        public CookieVisitor()
        {
            IsReady = true;
        }
        public bool Visit(Cookie cookie, int count, int total, ref bool deleteCookie)
        {
            lock (this)
            {
                if (_cookies.ContainsKey(cookie.Name))
                {
                    _cookies[cookie.Name] = new System.Net.Cookie(cookie.Name, cookie.Value, cookie.Path, cookie.Domain);
                    _cookies[cookie.Name].Name = cookie.Name;
                    _cookies[cookie.Name].Value = cookie.Value;
                    _cookies[cookie.Name].Path = cookie.Path;
                    _cookies[cookie.Name].Domain = cookie.Domain;
                }
                else _cookies.Add(cookie.Name, new System.Net.Cookie(cookie.Name, cookie.Value, cookie.Path, cookie.Domain));
                //fire when complete
                IsReady = count == total - 1;   //
            }
            return true;
        }

        public void Dispose()
        {

        }

        Dictionary<string, System.Net.Cookie> _cookies = new Dictionary<string, System.Net.Cookie>();
        public Dictionary<string, System.Net.Cookie> AllCookies { get { return _cookies; } }
        public bool IsReady { get; set; }
        public System.Net.Cookie this[string name]
        {
            get { return _cookies.ContainsKey(name) ? _cookies[name] : null; }
        }
        ~CookieVisitor()
        {
        }
    }
}
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