You can customize UINavigationBar by implementing drawRect

Add this code in to bottom of your delegate or create new file.

@implementation UINavigationBar (UINavigationBarCategory)

/** Solid Color **/
- (void)drawRect:(CGRect)rect {
UIColor *color = [UIColor redColor];
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColor(context, CGColorGetComponents( [color CGColor]));
CGContextFillRect(context, rect);
self.tintColor = color;
}

/**
//Image Background
- (void)drawRect:(CGRect)rect {
UIColor *color = [UIColor blackColor];
UIImage *img = [UIImage imageNamed: @"top-nav.png"];
[img drawInRect:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];
self.tintColor = color;
}**/
@end

1. Error handler

On Error Resume Next
objSLXDB.ExecuteSQL(strSQL)
If ErrorCheck (Application.Translator.Localize(“Error executing SQL:”)) > 0 Then Exit Sub