How do I check for binary vs. text in an HttpWebRequest in c#? -

is there way determine if response httpwebrequest in c# contains binary data vs. text? or there class or function should using this?

here's sample code. i'd know before reading streamreader if content not text.

httpwebrequest request = (httpwebrequest)webrequest.create("http://www.someurl.com"); request.method = webrequestmethods.http.get; using (webresponse response = request.getresponse()) {     // check somewhere in here if response binary data , ignore      using (streamreader reader = new streamreader(response.getresponsestream()))     {         string responsedetails = reader.readtoend().trim();     } } 

in general, web sites tell in content-type header kind of data they're returning. can determine getting contenttype property response.

but sites have been known lie. or not anything. i've seen both. if there no content-type header or don't want trust it, way can tell kind of data there, reading it.

but then, if don't trust site, why reading data it?