UITable View Do Not Reload

Am using following code in table view for showing last row But here problem is that while using this am unable to scroll the table. I search lot for this but I didn't find the way to solve this question . can anyone give some suggestion how to solve this.

- (UITableViewCell *)tableView:(UITableView *)tableView1 cellForRowAtIndexPath:(NSIndexPath *)indexPath {

static NSString *MyIdentifier = @"MyIdentifier";

// here to draw cell ImageCell is used for customise cell.

ImageCell *cell = (ImageCell *)[tableView dequeueReusableCellWithIdentifier:MyIdentifier]; // changed this

if (cell == nil) {
    cell = [[[ImageCell alloc] initWithFrame:CGRectZero reuseIdentifier:MyIdentifier] autorelease]; // changed this

}
cell.selectionStyle=UITableViewCellSelectionStyleNone;
// setting the text

NSDictionary *messageData = [messageArray objectAtIndex:[indexPath row]];
[cell setData:messageData];

int lastRowNumber = [tableView numberOfRowsInSection:0]-1;
NSIndexPath* ip = [NSIndexPath indexPathForRow:lastRowNumber inSection:0];
[tableView scrollToRowAtIndexPath:ip atScrollPosition:UITableViewScrollPositionNone animated:YES];
// Set up the开发者_JS百科 cell
return cell;
}

This is my code.

atScrollPosition:UITableViewScrollPositionNone is your culprit, use UITableViewScrollPositionBottom or UITableViewScrollPositionTop