UITableViewCell does not appear in my table - objective-c

Question

I have an UITableVIew. Now I made my own UITableViewCell. But if my table appears nothing is shown. However the cells are still selectable and open the DetailView. Which command have I forgotten?
//Customize the appearance of table view cells.
-(UITableViewCell *)tableView: (UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"MainTableCell";
MainTableCell *cell = (MainTableCell*)[tableView dequeueReusableCellWithIdentifier:Cel lIdentifier];
if (cell == nil) {
cell = [[[MainTableCell alloc] initWithStyle:UITableViewCellStyleDef ault reuseIdentifier:CellIdentifier] autorelease];
}
// Configure the cell.
VerwaltungInformation *selectedFormel = [listOfFormularies objectAtIndex:indexPath.row];
cell.FormelNameLabel.text = selectedFormel.nameFormel;
return cell;
}
Do I have to add special things? If somebody needs more code - please tell me.
Here is my MainTableCell.h:
import <UIKit/UIKit.h>
#interface MainTableCell : UITableViewCell {
UILabel *FormelNameLabel;
UILabel *ErklaerungVerfuegbarLabel;
UILabel *BeispielVerfuegbarLabel;
UILabel *RechnerVerfuegbarLabel;
}
#property (nonatomic, retain) IBOutlet UILabel *FormelNameLabel;
#property (nonatomic, retain) IBOutlet UILabel *ErklaerungVerfuegbarLabel;
#property (nonatomic, retain) IBOutlet UILabel *BeispielVerfuegbarLabel;
#property (nonatomic, retain) IBOutlet UILabel *RechnerVerfuegbarLabel;`
#end
And here is my MainTableCell.m:
#import "MainTableCell.h"
#implementation MainTableCell
#synthesize FormelNameLabel;`
#synthesize ErklaerungVerfuegbarLabel;
#synthesize BeispielVerfuegbarLabel;
#synthesize RechnerVerfuegbarLabel;`
- (void)dealloc {
[FormelNameLabel release];
[ErklaerungVerfuegbarLabel release];
[BeispielVerfuegbarLabel release];
[RechnerVerfuegbarLabel release];
[super dealloc];
}
#end

Answer 1

you have commented this line
cell. VerwaltungInformation *selectedFormel = [listOfFormularies objectAtIndex:indexPath.row];
and also check wthr
selectedFormel.nameFormel
contains any value.

Answer 2

ok, I'll try to answer.
1.try to NSLog this value selectedFormel.nameFormel before setting it to the label.text.
NSLog(#"selectedFormel.nameFormel:%#", selectedFormel.nameFormel);
2.Have you configured your cell properly? are you sure that for example FormelNameLabel's frame is not zero?
NSLog(#"cellFrame:%#", NSStringFromCGRect(cell.frame));
Are you sure that you have added a label to the cell as subview?
If all these things are done and it still shows nothing provide a code from your cell!