how to get File Dialog 's file name

[powerplay]

Dear all,

I use File Dialog to open a file and read the content of it. However, I want to show the name of the opened file and don't know how to do it.

Anybody has an idea to display the name of the opened file?

Thanks.

[MikeS81 · Accepted solution]

Hi powerplay,

the File Dialog has an "selected path" output. You can use the strip path function to get only the filename.

Mike

[RavensFan]

The express VI in the Advanced File I/O functions?

It has an output that is the selected file path.  You can wire an indicator to that.

[TCPlomp]

I think you use the pop-up from the 'read from file' primitive, to get the file name use the following code:

The Refnum to Path will read the data at the file reference and returns it actual path.

Ton

[powerplay]

thanks for your prompt replies. I really appreciate that. 

 

[johnwhitcraft]

Warning:

This technique {Refnum to Path} does not appear to work with configuration (.ini) files having Sections and Keys.

[RavensFan]

No.  It won't.  Because the refnum the Config functions use is not a file refnum, but a refnum for a queue.

The queue is a single element queue and the cluster that defines the queue has the file refnum as an element within it, along with the config data and a boolean flag.

You can open up the Config File subVI's to see how they handle the file reference.  It basically wraps the information up in a single cluster and guards against simultaneous access using a a single element queue size.

But I don't know of a reason to ever use the technique in this thread.  If you ever generate a file reference, then you had to open a file with a known file path.  Just carry along that file path/name to where you need it rather than trying to back out the file name from the reference wire.

[paul_cardinale]

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@johnwhitcraft wrote:

Warning:

This technique {Refnum to Path} does not appear to work with configuration (.ini) files having Sections and Keys.

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There's a separate function for that in the "Configuration File VIs" palette: "Not A Config Data Refnum.vi"