前台

<div id="divUrlDetail" runat="server">
</div>

后台

protected void Page_Load(object sender, EventArgs e)
{
divUrlDetail.InnerHtml = new BPMDataService().GetHtmlByUrl("你的链接地址");
}

public string GetHtmlByUrl(string url)
{
WebClient MyWebClient = new WebClient();
MyWebClient.Credentials = CredentialCache.DefaultCredentials;//获取或设置用于向Internet资源的请求进行身份验证的网络凭据
Byte[] pageData = http://www.mamicode.com/MyWebClient.DownloadData(url); //从指定网站下载数据
string pageHtml = Encoding.UTF8.GetString(pageData);
pageHtml = System.Text.RegularExpressions.Regex.Replace(pageHtml, @"<input[\s\S]+?/>", "");
pageHtml = pageHtml.Replace("Print", "");
return pageHtml;
}

asp.net 页面嵌套（非iframe）方法