iOS/iPhone Confirm Dialog Popup - UIAlertView (Objective-C,iPhone,iPad)

    UIAlertView *alert = [[UIAlertView alloc]
                          initWithTitle:@"Confirm!"
                          message:@"Do you want to Cancel?"
                          delegate: self
                          cancelButtonTitle:@"Cancel"
                          otherButtonTitles:@"OK", nil];
    [alert show];
    [alert release];

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    
    if(buttonIndex == 0)
    {
        lblResult.text = @" Your selected Cancel.";
    }else if(buttonIndex == 1)
    {
        lblResult.text = @" Your selected OK."; 
    }
    
}

//
//  ViewController.h
//
//  Created by Weerachai on 10/27/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    IBOutlet UILabel *lblResult;
}


- (IBAction)btnConfirm:(id)sender;

@end

//
//  ViewController.m
//
//  Created by Weerachai on 10/27/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)dealloc {
    [lblResult release];
    [super dealloc];
}

- (IBAction)btnConfirm:(id)sender {
    
    UIAlertView *alert = [[UIAlertView alloc]
                          initWithTitle:@"Confirm!"
                          message:@"Do you want to Cancel?"
                          delegate: self
                          cancelButtonTitle:@"Cancel"
                          otherButtonTitles:@"OK", nil];
    [alert show];
    [alert release];
    
}


- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    
    if(buttonIndex == 0)
    {
        lblResult.text = @" Your selected Cancel.";
    }else if(buttonIndex == 1)
    {
        lblResult.text = @" Your selected OK."; 
    }
    
}

@end