"Check if file or folder exists" returns TRUE for invalid path

[Mark_Ireton]

The 'Check if file or folder exists' VI returns a TRUE when the path is invalid.  It seems like it should return FALSE. 

Here are some examples:

Path               Result
c:                     TRUE (okay)
e:                     TRUE (this drive not present on my PC)
\\SomeServer   TRUE (non-existent server)
//SomeServer   FALSE (okay)

Any suggestions?

Thanks, Mark

[Ray.R]

Can you show your code?  Either attach an image or the actual code.

Thanks,

RayR

[tst]

Which version of LabVIEW are you using? It returns false for me on the current beta for paths of all the kinds you've shown.

[smercurio_fc]

I thought you weren't allowed to talk about the beta in a public forum.

[Mark_Ireton]

Here is the file (LV 8.2)

[Dennis_Knutson]

It looks like a bug to me. If you just provide a drive letter (i.e. x:\), the File/Directory Info function returns an error which causes Get File Type to be called. This returns a value of 'Directory'. The test of file or folder exists is if Get File Type does not return 'Invalid file/path'.

[tst]

I agree that the Get File Type VI is the source of the error.

I can think of two reasons why it works in the beta:

1. The VI was changed.
2. I'm running the beta on XP home, which handles these paths differently.

I'm leaning towards 1.

[Eriquito]

I've confirmed this is a problem with the Get File Type vi.  This was reported to R&D (#110902) for further investigation.  Thanks for pointing this out!

[setty]

hi tr.....!!

since i am using 7.1 version m nt able to find a fnt called "check if file or folder exits " in the selected path ,so cud anyone plezz help me in this regard ,humble request,plezzzzzzzzz!!:mansad:,

i hav also attached my code ,since m a begginer in lab view i wud always welcome ur feedbacks .........

 thanking u.......

[GregFreeman]

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@setty wrote:

hi tr.....!!

since i am using 7.1 version m nt able to find a fnt called "check if file or folder exits " in the selected path ,so cud anyone plezz help me in this regard ,humble request,plezzzzzzzzz!!:mansad:,

i hav also attached my code ,since m a begginer in lab view i wud always welcome ur feedbacks .........

 thanking u.......

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This thread is four years old...you probably should have started a new one. Also, I'll warn you, not typing words out in full is a pet peeve of many on this forum, so I'd suggest trying to use full words rather than "text message speak" in the future.

That said, in LabVIEW 7.1 you can probably use the create folder VI and if you get an error, you will know the directory is already there. It may not be quite this straight forward, but it is worth trying and is a starting point. Someone else may have a better solution, as I never really used 7.1