判断手机访问网站

<script type="text/javascript">
if ((navigator.userAgent.match(/(iPhone|iPod|Android|ios|iOS|iPad|Backerry|WebOS|Symbian|Windows Phone|Phone)/i))) {
window.location.href = "http://www.baidu.com/";
}
</script>

 

C#

string osPat = "iPhone|iPod|Android|ios|iOS|iPad|Backerry|WebOS|Symbian|Windows Phone|Phone";
string uAgent = Request.ServerVariables["HTTP_USER_AGENT"];
Regex reg = new Regex(osPat);
if (reg.IsMatch(uAgent))
{
   //手机访问
}