In my application i having multiple image in sq lite database,Since i want to change to the next image on button click,Here my code,

 -(void)Readthesqlitefile:(NSInteger *)sno
 {
sqlite3 *database;//database object
NSString *docpath=[self doccumentspath];//get sqlite path
const char *ch=[docpath UTF8String];//string to constant char UTF8string  main part to connect DB

if (sqlite3_open(ch, &database)==SQLITE_OK) {

    const char *chstmt="SELECT * FROM animal where rowid=  = %d",sno;

    sqlite3_stmt *sqlstmt;//to execute the above statement
    if (sqlite3_prepare_v2(database, chstmt, -1, &sqlstmt, NULL)==SQLITE_OK)
    {
        while (sqlite3_step(sqlstmt)==SQLITE_ROW)
        {
            const char *Bname=(char *)sqlite3_column_text(sqlstmt, 0);
            //converting const char to nsstring
            NSString *Bndname=[NSString stringWithFormat:@"%s",Bname];
            NSLog(@"Brand Names=%@",Bndname);
            lb1.text=[NSString stringWithFormat:Bndname];   

            NSUInteger legnt=sqlite3_column_bytes(sqlstmt, 1);

            if (legnt>0) {

                NSData *dt=[NSData dataWithBytes:sqlite3_column_blob(sqlstmt, 1) length:legnt];
                clsimg=[UIImage imageWithData:dt];//converting data to image
                imager.image=clsimg;
            }
            else {
                clsimg=nil;
            }
     }
    }
    sqlite3_finalize(sqlstmt);
}
sqlite3_close(database);
}

Button click function

  -(IBAction)changenext
  {
  int j;
  for (j=1; j<10; j++)
  {
      [self Readthesqlitefile:j];
  }

  }

its is not working pls help me to solve it out?