在ASP.NET中检查用户浏览器的最佳方法是什么？

Question

What is the best way to check if the user is using a mobile browser? I have seen some code, is the best way really thousands of if(...|| ...||) statements or is there a good api, if so which api does the job best(and for free preferably). Thanks in advance.

ps Am using c#, asp.net 3.5.

Answer 1

The best thing to do it actually not detect the browser. The number of browsers available, along with their various versions (and the likelihood of more coming along) means it isn't really practical to do. Even the number of devices has rocketed now that there are phones, tablets, netbooks and computers of all sizes.

So instead of detecting a browser, grab the resolution of the device and use that... ie "This device is small, medium or large".

If you need this information for document style, you can use device stylesheets.

<link rel="stylesheet" href="standard.css" media="screen" type="text/css" />
<link rel="stylesheet" href="mobile.css" media="handheld" type="text/css"> 

Answer 2

How about using a browser file

http://www.codeproject.com/KB/aspnet/browsercaps.aspx

And some example ones

http://mdbf.codeplex.com/

http://slingfive.com/pages/code/browserCaps/

http://browsers.garykeith.com/

Answer 3

More browsercap files can be found here:

http://owenbrady.net/browsercaps/

You need to place them in the App_Browsers folder of your ASP.NET website then you can discover info about the client browser using Request.Browser , in particular: Request.Browser.IsMobileDevice

I agree with @Sohnee that following this path is a maintenance hazard, but it can be useful for detecting spiders.