Folderitem

General
1

I am storing NativePaths in a database. When my app loads I iterate through the native paths and create folder items from the paths. If i delete the item referenced by one of the paths my app throws an exception at dim f as new FolderItem(res(n,0),FolderItem.PathTypeNative). I thought this would work and then pick up at the next line if f.exists that it no longer exists.

The exception is UnsuportedFormatException - The path passed into new FolderItem was invalid


for N as integer = 0 to UBound(res,1)
      
      
      dim f as new FolderItem(res(n,0),FolderItem.PathTypeNative)
      
      if f.Exists = True then
        pIcon = brick
      else
        pIcon = brick_error
      end if
      
      frmmain.SourceList.AddMenuItem(res(n,0),res(n,0),"$keyActiveProjects" ,pIcon)
      
      f = nil
      
    next N
    
  end if
2

[quote=111523:@Mike Charlesworth]I am storing NativePaths in a database. When my app loads I iterate through the native paths and create folder items from the paths. If i delete the item referenced by one of the paths my app throws an exception at dim f as new FolderItem(res(n,0),FolderItem.PathTypeNative). I thought this would work and then pick up at the next line if f.exists that it no longer exists.

The exception is UnsuportedFormatException - The path passed into new FolderItem was invalid
[/quote]

I assume you mean that the path your trying to resolve you delete from the local machine
Say you had saved a path of
/a/b/c
and remove b, c or a that you get the problem ?

why not use a try catch ?


for N as integer = 0 to UBound(res,1)
      
   try      
      dim f as new FolderItem(res(n,0),FolderItem.PathTypeNative)
      
      if f.Exists = True then
        pIcon = brick
      else
        pIcon = brick_error
      end if
      
      frmmain.SourceList.AddMenuItem(res(n,0),res(n,0),"$keyActiveProjects" ,pIcon)
      
      f = nil
   catch UFE as UnsuportedFormatException
   end try

    next N
    
  end if
3

I may have to but i’m not a fan, even the syntax bothers me. Try this, if it goes wrong do this instead.

If I do: Dim f as folderitem([i][invalid path][/i]) it works fine. There is some kind of inconsistency here that

Dim f as new FolderItem([invalid path],FolderItem.PathTypeNative) Is trying to resolve the path when declared whereas

Dim f as new folderitem([invalid path]) is not trying to resolve the path when declared.

4

I was going to suggest using GetSaveInfo for storing the file path. I was surprised that Norman did not mention it. Is GetSaveInfo no longer preferred over .NativePath for storing file paths in files and DBs?