if (webInfo.Document != null) webInfo.Document.OpenNew(true); else webInfo.Navigate("about:blank"); //---- webInfo.Document.Write("<div class=‘e‘>错误信息</div>"); webInfo.Document.Write(@"<style type=‘text/css‘> .e {color:#ff0000} </style>")
原文：http://www.cnblogs.com/z5337/p/5143977.html