ถามเรื่อง iOS เชื่อมต่อ กับ Web Service Server โดยข้อมูลเป็นลักษณะ JSON ครับ

<form target="_blank" action='http://itsc.feu.ac.th/WSMoblie/WSJson.asmx/GetTestContext' method="POST">                      

<table cellspacing="0" cellpadding="4" frame="box" bordercolor="#dcdcdc" rules="none" style="border-collapse: collapse;">
<tr>
<td></td>
<td align="right"> <input type="submit" value="Invoke" class="button"></td>
</tr>
</table>
</form>

   //Name=Weerachai&Surname=Nukitram"
   NSMutableString *post = [NSString stringWithFormat:@"Name=%@&Surname=%@",[txtName text],[txtSurname text]];
   NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
   NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
   
   NSURL *url = [NSURL URLWithString:@"http://itsc.feu.ac.th/WSMoblie/WSJson.asmx/GetTestContext'"];
   NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
                                      cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
                                      timeoutInterval:10.0];
   [request setHTTPMethod:@"POST"];
   [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
   [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];
   
   NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];

- (void)viewDidLoad
{
    [super viewDidLoad];
    

    galleryid = @"GalleryID";
    name = @"Name";
    titlename = @"TitleName";
    thumbnail = @"Thumbnail";
    

    myObject = [[NSMutableArray alloc] init];
    
    //------------------------
    NSMutableString *post = [NSString stringWithFormat:@"Number=%@",@"1"];
    NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
    NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
    NSURL *url = [NSURL URLWithString:@"http://itsc.feu.ac.th/WSMoblie/WSJson.asmx?op=GetTestTableContext'"];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
                                                           cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
                                                       timeoutInterval:10.0];
    [request setHTTPMethod:@"POST"];
    [request setValue:postLength forHTTPHeaderField:@"Content-Length"];
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
    [request setHTTPBody:postData];
    NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];
    //-----------------------
    
    
    if (theConnection) {
        self.receivedData = [[NSMutableData data] retain];
    } else {
		UIAlertView *connectFailMessage = [[UIAlertView alloc] initWithTitle:@"NSURLConnection " message:@"Failed in viewDidLoad"  delegate: self cancelButtonTitle:@"Ok" otherButtonTitles: nil];
		[connectFailMessage show];
		[connectFailMessage release];
    }

NSMutableString *post = [NSString stringWithFormat:@"Number=%@",@"1"]; 

NSString *test = @"1";
NSMutableString *post = [NSString stringWithFormat:@"Number=%@",[self.test description]];