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

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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..