//Web Service Call    NSString *soapMessage = [NSString stringWithFormat:@"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n""<SOAP-ENV:Envelope \n""xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" \n""xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" \n" "xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\" \n""SOAP-ENV:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\" \n""xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\"> \n""<SOAP-ENV:Body> \n""<GetData xmlns=\"http://tempuri.org/\">""</GetData> \n""</SOAP-ENV:Body> \n""</SOAP-ENV:Envelope>"];

//[[NSURLCache sharedURLCache] removeAllCachedResponses];    NSURL *url = [NSURL URLWithString:@"http://192.168.1.20:86/Service1.svc"];                               NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];                             NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];                  [theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];           [theRequest addValue: @"http://tempuri.org/IService1/GetData" forHTTPHeaderField:@"SOAPAction"];    [theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];    [theRequest setHTTPMethod:@"POST"];         [theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];    NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];

if(theConnection) {        webData = [[NSMutableData data] retain];    }else {        NSLog(@"theConnection is NULL");    }

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {    [webData setLength:0];}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {    [webData appendData:data];}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {    label.text = [NSString stringWithFormat:@"Connection failed: %@", [error description]];}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {    [connection release];    NSLog(@"Data has been loaded");    NSXMLParser *parser = [[NSXMLParser alloc] initWithData:webData];    [parser setDelegate:self];    [parser parse];    [webData release];}

- (void)parserDidStartDocument:(NSXMLParser *)parser {

}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict {    currentElement = elementName;}

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {

        NSString *fixedString = [string stringByTrimmingCharactersInSet:                                 [NSCharacterSet whitespaceAndNewlineCharacterSet]];

if ([currentElement isEqualToString:@"GetDataResult"])        {            label.text=@"";            UIAlertView  *view = [[UIAlertView alloc] initWithTitle:@"调用wcf成功！" message:fixedString delegate:nil cancelButtonTitle:nil otherButtonTitles:nil] ;            [view show];            [view release];        }

}