Coded UI中执行Javascript

Coded UI中用C#对WebBrowser执行JavaScript，之前一直纠结这个问题各种找方法，最后查看WatiN中的RunScript()方法的实现，终于有所收获。

有例有真相：Technet Library的登录实现：

       [TestMethod]
        public void VerifySignIn()
        {
            string url = "https://login.live-int.com/login.srf?wa=wsignin1.0&rpsnv=46&ct=1364435925&rver=6.0.5276.0&wp=MCLBI&wlcxt=TechNet%24TechNet%24TechNet&wreply=http%3a%2f%2ftechnettest.redmond.corp.microsoft.com%2fen-US%2flibrary%2faa991542%3flc%3d1033&lc=1033&id=266001&mkt=en-US";
            string name = "abc";
            string psw = "123";

            //js代码：f1是表单，i0116是UserName文本框的id，i0118是Password的文本框id，idSIButton9是Sign in按钮的id。
            string scriptCode = "f1.i0116.value=" + "'" + name + "'; f1.i0118.value=" + "'" + psw + "'; f1.idSIButton9.click();";
            
            BrowserWindow browser = BrowserWindow.Launch(new Uri(url));
            HtmlInputButton _btnSubmit = new HtmlInputButton(browser);
            _btnSubmit.SearchProperties[HtmlInputButton.PropertyNames.Id] = "idSIButton9";

            //将HtmlControl转换成HtmlElement，然后获取到IHTMLDocument2对象，进而获取到IHTMLWindow2对象，然后调用其execScript()方法
            IHTMLElement btnSubmit = _btnSubmit.NativeElement as IHTMLElement;
            var doc = btnSubmit.document as IHTMLDocument2;
            IHTMLWindow2 window = doc.parentWindow;
            window.execScript(scriptCode, "javascript");
            browser.WaitForControlReady();
        }