Weird List.IndexOf ???

[susu]

Here my AddFavorite sub to write the current page number into favorite file.
The idea is: If this page isn't in favorite yet => write into file.
If it's already in favorite => delete it from file.

I'm sure the pager.CurrentPage is correct. "favorite.dat" file is correct too. But it keep writing the same page number instead of delete it. I think the problem is fav.IndexOf(pager.CurrentPage) It's always = -1 !!!
I used this sub before with my old app and it worked correctly until now :BangHead:

' pager.CurrentPage is Int
Sub AddFavorite
   If File.Exists(File.DirInternal, "favorite.dat") = False Then   ' if no favorite file then create it
      Dim fav As List
      fav.Initialize
      fav.Add(pager.CurrentPage)
      File.WriteList(File.DirInternal, "favorite.dat", fav)
      ToastMessageShow("Added page #" & pager.CurrentPage & " into Favorite", False)
      
   Else    ' if there's favorite file then read it
      Dim fav As List
      fav.Initialize
      fav = File.ReadList(File.DirInternal, "favorite.dat")
      
      If fav.IndexOf(pager.CurrentPage) = - 1  Then    ' find this current page, if not found then write it
         fav.Add(pager.CurrentPage)
         File.WriteList(File.DirInternal, "favorite.dat", fav)
         ToastMessageShow("Added page #" & pager.CurrentPage & " into Favorite", False)
      
      Else       ' found this current page then delete it
         fav.RemoveAt(fav.IndexOf(pager.CurrentPage))
         File.WriteList(File.DirInternal, "favorite.dat", fav)
         ToastMessageShow("Removed page #" & pager.CurrentPage & " from Favorite", False)
      End If
   End If
End Sub

 

[specci48]

Have you tried to log the content of "fav" and "pager.CurrentPage" just before the if-statement?
Maybe this helps to see why the program does not behave as you expect.


specci48