IPhone NSURLConnection Delegates

In my application i am checking username and password using webservice .i开发者_如何学JAVA used NSURLConnection class but before the execution of NSURLConnection delegates my authentication metod works.how to contorl after the response come it continous the normal execution

If you are looking to do something after the end of web services.. there are couple of methods.. like .. - (void)parserDidEndDocument:(NSXMLParser *)parser {

check NSURLConnection documentation..