Question

As you all know there is many file host websites, is there a way to process the http link of a of file on one of those sites and retrieve a result if the file exists or if the http link even exists or not. I know that maybe some of those file host websites uses their own APIs but i want a more generic way.

Edit:

So as i understand there is no file on a server, it’s just that i have to read the response and read it properly. I want to ask another thing, what about redirection, does that mean if i got the response of a link that redirects to other link, i will get the final target from the response ?

Answer 1

You can find out if a file exist using the exists method:

bool System.IO.File.Exists(string path)

///

in order to find out if a file exist on a remove server you can try this:

WebRequest request;
WebResponse response;
String strMSG = string.Empty;
request = WebRequest.Create(new Uri(“http://www.yoururl.com/yourfile.jpg”));
request.Method = “HEAD”;

try
{
    response = request.GetResponse();
    strMSG = string.Format(“{0} {1}”, response.ContentLength,         response.ContentType);
}
catch (Exception ex)
{
   //In case of File not Exist Server return the (404) Error
    strMSG = ex.Message;
}

see this: