问CefSharp在VSTO Addin中的应用

EN

    public void InitBrowser()
    {
        var cefSettings = new CefSettings();
        cefSettings.MultiThreadedMessageLoop = true;
        // I'm setting current directory to D:\\CEF\\cefsharp\\ExcelWinform\\ExcelWinformAddIn\\bin\\x64\\Debug\\ where all the CefSharp dlls and dependencies are present.
        cefSettings.BrowserSubprocessPath = "D:\\CEF\\cefsharp\\ExcelWinform\\ExcelWinformAddIn\\bin\\x64\\Debug\\CefSharp.BrowserSubprocess.exe";

        if (!Cef.Initialize(cefSettings, performDependencyCheck: true, browserProcessHandler: null))
        {
            throw new Exception("Unable to Initialize Cef");
        }

        browser = new ChromiumWebBrowser("http://www.google.com");
        {
            Dock = DockStyle.Fill;
        }
        BrowserSettings browserSettings = new BrowserSettings();
        //browserSettings.FileAccessFromFileUrls = CefState.Enabled;
        //browserSettings.UniversalAccessFromFileUrls = CefState.Enabled;
        browserSettings.BackgroundColor = 0xFFFF00;
        browserSettings.LocalStorage = CefState.Enabled;// enable Local access
        browser.BrowserSettings = browserSettings;
        this.Controls.Add(browser);
        browser.Dock = DockStyle.Fill;
    }

If instead of VSTO Excel addin, I just create a simple WindowFrom application then the abve code is working fine.