Question

我正在创建使用CefSharp 73.1.130的软件。当URL更改或至少在页面加载时，我需要进行一些检查。

我已经尝试了很多事情，例如：

browser.RenderProcessMessageHandler = new RenderProcessMessageHandler();

public class RenderProcessMessageHandler: IRenderProcessMessageHandler {
    // Wait for the underlying `Javascript Context` to be created, this is only     called for the main frame.
    // If the page has no javascript, no context will be created.
    void IRenderProcessMessageHandler.OnContextCreated(IWebBrowser browserControl, IBrowser browser, IFrame frame) {
        const string script = "document.addEventListener('DOMContentLoaded', function(){ alert('DomLoaded'); });";

        frame.ExecuteJavaScriptAsync(script);
    }
}

//Wait for the page to finish loading (all resources will have been loaded,     rendering is likely still happening)
browser.LoadingStateChanged += (sender, args) => {
    //Wait for the Page to finish loading
    if (args.IsLoading == false) {
        browser.ExecuteJavaScriptAsync("alert('All Resources Have Loaded');");
    }
}

和这个：

    browser.LoadingStateChanged += OnLoadingStateChanged;
private void OnLoadingStateChanged(object sender, LoadingStateChangedEventArgs args) {
    if (!args.IsLoading) {
        // Page has finished loading, do whatever you want here
    }
}

但是我不确定我是否在正确使用它，因此每次都会出现错误，例如“名称在当前上下文中不存在”。

这是我的CefSharp代码：

    public CefSharp.WinForms.ChromiumWebBrowser browser;
private void InitializeChromium() {
    CefSettings settings = new CefSettings();
    Cef.Initialize(settings);
    browser = new CefSharp.WinForms.ChromiumWebBrowser("https://supremenewyork.com/shop/all");
    browser.Dock = DockStyle.Fill;

    this.wb_panel.Controls.Add(browser);
}

我希望将新的URL作为输出显示在RichTextBox中

Answer 1

欢迎使用StackOverflow，您可以在代码中使用ChromiumWebBrowser_AddressChanged事件。图书馆网站上介绍了ChromiumWebBrowser.AddressChanged事件。

这是您应该如何使用它：

订阅活动：

browser.AddressChanged += OnBrowserAddressChanged;

将OnBrowserAddressChanged的主体定义为RichBoxText的值：

this.InvokeOnUiThreadIfRequired(() => richTextBox1.Text = e.Address);

完成

这是完整的示例：

using CefSharp;
using CefSharp.WinForms;
using CefSharp.WinForms.Internals;

using System;
using System.Windows.Forms;

namespace WindowsFormsApp2
{
    public partial class Form1 : Form
    {
        private readonly ChromiumWebBrowser browser;
        public Form1()
        {
            InitializeComponent();

            browser = new ChromiumWebBrowser("www.google.com")
            {
                Dock = DockStyle.Fill,
            };


            browser.AddressChanged += OnBrowserAddressChanged;

            Controls.Add(browser);
        }

        private void OnBrowserAddressChanged(object sender, AddressChangedEventArgs e)
        {
            this.InvokeOnUiThreadIfRequired(() => Text = e.Address);
        }
    }
}

使用CefSharp检测URL更改

1 个答案: