C#的cefsharp 如何控制自动点击一个链接？

请问给位大神cefsharp 如何用代码实现点击链接。
webbrowser倒是挺简单的，但是这cefsharp如何点击

http://www.th7.cn/Program/net/201412/328915.shtml

            string js1 = "document.getElementsByClassName(\"d-sm-ib va-sm-m cart-button\")[0].click();";
            string js2 = "document.getElementsByClassName(\"ncss-brand text-color-grey pt6-sm pb6-sm d-sm-b u-uppercase fs19-sm fs22-md fs16-lg bg-transparent\")[0].click();";
            var script = string.Format(js1 + js2);
            chromeBrowser.GetMainFrame().ExecuteJavaScriptAsync(script);
```                chromeBrowser.FrameLoadStart += (object sen, FrameLoadStartEventArgs ed) =>
                {
                    labdv("主页开始载入...",dvr);
                };
                chromeBrowser.FrameLoadEnd += (object sen, FrameLoadEndEventArgs ed) =>
                   {
                       labdv("主页已经加载完成...", dvr);
                       MyParams param = new MyParams();
                       param.chromeBrowser = chromeBrowser;
                       param.username = chromeBrowser.Name.Split('/')[0];
                       param.userpwd = chromeBrowser.Name.Split('/')[1];
                       param.drr = dvr;
                       new Thread(flp).Start(param);                       
                   };