原博地址：https://www.cnblogs.com/wolf-sun/p/6929728.html
https://www.cnblogs.com/wolf-sun/p/6929728.html

 

CefSharp 中控制弹窗的接口是 ILifeSpanHandler ，可以对 OnBeforePopup 进行重写，即可控制是否弹出新窗体。

要实现禁止弹出新窗体-在同一窗口打开，需要在原窗体加载目标Url，即参数targetUrl，并返回结果true，此时将会取消新窗口的创建，并在原窗口加载链接。具体实现方法体的代码如下：

   /// <summary>
    /// 在自己窗口打开链接
    /// </summary>
    internal class OpenPageSelf : ILifeSpanHandler
    {
        public bool DoClose(IWebBrowser browserControl, IBrowser browser)
        {
            return false;
        }

        public void OnAfterCreated(IWebBrowser browserControl, IBrowser browser)
        {

        }

        public void OnBeforeClose(IWebBrowser browserControl, IBrowser browser)
        {

        }

        public bool OnBeforePopup(IWebBrowser browserControl, IBrowser browser, IFrame frame, string targetUrl, 
string targetFrameName, WindowOpenDisposition targetDisposition, bool userGesture, IPopupFeatures popupFeatures, 
IWindowInfo windowInfo, IBrowserSettings browserSettings, ref bool noJavascriptAccess, out IWebBrowser newBrowser)
        {
            newBrowser = null;
            var chromiumWebBrowser = (ChromiumWebBrowser)browserControl;
            chromiumWebBrowser.Load(targetUrl);
            return true; //Return true to cancel the popup creation copyright by codebye.com.
        }
    }

在实例化浏览器的时候，指定处理程序

        private void MainFrm_Load(object sender, EventArgs e)
        {
            this.WindowState = FormWindowState.Maximized;
            CefSharp.CefSettings settings = new CefSharp.CefSettings();

            CefSharp.Cef.Initialize(settings);
            CefSharp.WinForms.ChromiumWebBrowser webView = new CefSharp.WinForms.ChromiumWebBrowser("https://www.baidu.com");
            webView.Dock = DockStyle.Fill;
            webView.LifeSpanHandler = new OpenPageSelf();//这句，是应用我们实现的窗口的打开方式。
            this.Controls.Add(webView);
        }