SHDocVw.InternetExplorer ie = new SHDocVw.InternetExplorer();
ie.DocumentComplete += ie_DocumentComplete;
ie.Navigate("http://www.baidu.com");
ie.Visible = true;
compWait();
mshtml.HTMLDocument doc = ie.Document;
doc.getElementById("kw1").innerText = "hellow world";
doc.getElementById("su1").click();
SHDocVw.InternetExplorer ie = new SHDocVw.InternetExplorer();
到这一步的时候就会出现异常