C# 获取当前网页HTML

//引用COM组件
//Microsoft HTML Object Library
//Microsoft Internet Controls

        SHDocVw.ShellWindows shellWindows = new SHDocVw.ShellWindowsClass();
        string filename;
        foreach (SHDocVw.InternetExplorer ie in shellWindows)
        {
            filename = Path.GetFileNameWithoutExtension(ie.FullName).ToLower();
            if (filename.Equals("iexplore"))
            {
                SetText(string.Format("Web Site　 : {0}", ie.LocationURL));
                mshtml.IHTMLDocument2 htmlDoc = ie.Document as mshtml.IHTMLDocument2;
                SetText(string.Format("　 Document Snippet: {0}",
                ((htmlDoc != null) ? htmlDoc.body.outerHTML
                : "***Failed***")));
                SetText(string.Format("{0}{0}", Environment.NewLine));
            }
        }