Create a Date Picker for iPhone(Hide Past Date's)

         //Create a Date Picker

theDatePicker1 = [[UIDatePicker alloc] initWithFrame:CGRectMake(0.0,140.0, 320.0, 120.0)];
theDatePicker1.transform = CGAffineTransformMakeScale(1.0, 0.8); theDatePicker1.datePickerMode = UIDatePickerModeDate;
self.datePicker = theDatePicker1;
[theDatePicker1 release];
[datePicker addTarget:self 

                           action:@selector(dateChanged1)    

                           forControlEvents:UIControlEventValueChanged];

[self.view addSubview:datePicker];

       //Date Picker Hide the Past Dates Coding

        NSDate *now = [[NSDate alloc] init];
now = [now addTimeInterval:60*60];
NSLog(@"%@",now);
theDatePicker1.minimumDate = now;

        // Date Format Coding

-(void)dateChanged1
{
NSDateFormatter *df=[[NSDateFormatter alloc]init];
[df setFormatterBehavior:NSDateFormatterBehavior10_4];
[df setDateFormat:@"MM/dd/yyyy"];
txt1.text = [NSString stringWithFormat:@"%@",
[df stringFromDate:datePicker.date]];
[df release];
}