"File Path Control" default Value

Hi - How do we set or change the default value for "File Path Control" (Control --> String & Path ---> File Path Control)?
I typed the default path into the control field on the front pannel and save the VI file. The value gone when I reopen the file.

jimmy.chretien wrote:
[...] difference between Not a path and Empty path... Why?
Not a Path is a specific value for the path (<Not a Path>).
Developers should use this to prevent situations in applications, where a user has to select a path before performing an action (e.g. saving a file). If the user skips the path selection, the application still has "Not a Path" and can prevent errors and tell the user to select the path (error handling!).
Norbert
CEO: What exactly is stopping us from doing this?
Expert: Geometry
Marketing Manager: Just ignore it.

Similar Messages

File path control-how to avoid the user to change the path string

Hi all,
I'm using "File path control" to chose file name. I don't want the user to write the path in the control directly (by typing) but only to choose the file via the button on the right.
I can implement this behaviour with path indicator and button of course. But I belieave that it can be done more elegant - only disable the part with the string - not the whole "File path control". But how? I tried to customize the control but not success.
Is it possible?
jochynator
LV 8.0.1, WinXP Pro
Attachments:
Path.vi ‏44 KB

The way I've done it is to make the path part of the control tiny and hide it behind a string indicator. Then whenever the path control changes value (by pressing the Browse button), I populate the string indicator with the path value. Here's a sample VI demonstrating this method, saved in LabVIEW 8.0.
Hope this helps,
-D
Darren Nattinger, CLA
LabVIEW Artisan and Nugget Penman
Attachments:
path_browse.vi ‏12 KB

How to force the File Path Control Browser button to the RT Target instead of the host machine?

I am building an application on a RT PXI system, and for one of the functions I would like the user to be able to use the browser button of the File Path Control to choose a directory on the PXI. However the browser button seems to only want open a file on the host PC, even though the application is fully deployed on the target. Note that I am controlling the PXI from a host PC.
If anyone has any suggestions that would be great. Thanks.

Hi,
Unfortunately, there is not a VI to do this. Are you browsing to these files from your host VI? In order to access the files on your PXI RT target, you'll need to FTP in and browse to them that way. You could programmatically do this, but there is not a simple VI to do so.
Amanda Howard
Americas Services and Support Recruiting Manager
National Instruments

File path control - browse button colour/color

I can't change the colour of the browse button on a file path control. I'm using LV 8.5, but I think I have the same problem on 7.1
Is the only way to change the colour to customise the control? Every other part of it seems to take colours from the tools palette.
Thanks for any pearls of wisdom.
Jon.

I am able to change the path browse button color in 8.51 are you trying to change the button color or the color of the folder on the button. To change the buttoin color use the paint tool and make sure you hit the space bar so you are painting the left color (Background color I cant remember which is which). This probably doesnt work on system buttons.
Paul Falkenstein
Coleman Technologies Inc.
CLA, CPI, AIA-Vision
Labview 4.0- 2013, RT, Vision, FPGA

File Path Control question

Simple question: How do I invoke the Open command in the File Path control? My reason is of my user hasn't supplied a file, then I want to force the user to select one.
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Most file related vi should prompt if there is no file path. If for some reason you are not getting that you could check to see if the file path is empty and add a prompt see below:
Tim
Johnson Controls
Holland Michigan

File path control: invoke file browser activation

Hi there,
on the front panel of a vi I want a file path control to open automatically the file browser window when the user clicks into the path control. Is there any way to do that programmatically after the mouse down event has been fired? I couldn't find a suitable method so far.
Thanks for any hint,
Peter
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I should point out that the mechanism you (I am referring to the OP) are proposing is counter-intuitive. Web browsers have started to do this, but they do it claiming security issues. Frankly, I think the security concern is small compared to the annoying change in normal behavior, but that's my just my opinion - I can't change the way Firefox or IE works.
Do you not have the Browse button visible for the control? Clicking this displays a file browser. This is normal and expected behavior.
Message Edited by smercurio_fc on 07-03-2009 09:21 AM

.INI files vs .TXT files for changing default values in a .EXE?

Hi,
I have a two-part question related to updating the default values of controls in an executable:
I am creating a LabVIEW executable for installation on two different production-floor computers.   I need to be able to change the default values of the front panel controls (as I would do with the “make this value default” command during development). From reading prior posts, I understand that I could use the “Write Configuration Settings File.vi” and “Read Configuration Settings File.vi” to generate a .INI file that would be read by the .EXE and would establish the desired values of the controls. However when I took a look at the block diagrams for those configuration .VIs, they don’t appear (to me) to be any easier to use than just reading values from a spreadsheet file. IE: Instead of using these configuration files and a .INI file, could I not instead just read values from a .TXT file that contains the desired values?   I’ve never used a .INI file before, or had to worry about “keys” and “sections,” so from my (perhaps naïve) perspective, the .INI method seems less easy to use. Is there any advantage to the .INI format?
Regardless of whether I use the .INI file or a .TXT file, I have this additional problem: One of the things that changes when I install my .EXE file on a new computer is the COM port numbers used by two serial devices.   (On my development computer, the two serial devices use COM5 and COM6, whereas on the two production-flood computers, the COM ports will almost certainly be different).   I suppose I could use the Device Manager on the production-floor computers to change the COM ports to be the same as those on my development computer, but I’d prefer to be able to (again) change the default value of the COM ports in my .EXE.   However, I’m not sure how to do that.   The configuration VIs, have options for reading / writing Booleans, strings, paths, and numeric, but not, (so far as I can tell) for a VISA class.
Any thoughts / suggestions are welcome. Thanks.
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Dan_the_Clam wrote:
Thanks for your reply, Yamaeda,
Great that I can use a string to open a VISA session - I had no idea. I'll try that.
And - ah - you are right about the .INI files. I just did an experiment in which I re-ordered the sections and randomly changed which letters were capitalized in the key values, and the "read configuration settings.VI" still read the file correctly. Thanks for that.
Unfortunately, in my existing code, the controls on the block-diagram aren't all co-located together; they are scattered throughout the block diagram - some of them in case structures and loops.   I suppose that means I'll have to move them all to the left side of the block diagram, route them to these "Write Key.VIs" and then wire them up into the cases and loops with fairly long wires.   It's just a hassle, and is going to make my block diagram more complicated.  Well, I suppose that's how one learns...
Thanks again.
dan
Assuming you have a state machine and an Init state it's a fair use of Local Variables to update controls from the ini-file. The same goes for saving the values.
/Y
LabVIEW 8.2 - 2014
"Only dead fish swim downstream" - "My life for Kudos!" - "Dumb people repeat old mistakes - smart ones create new ones."
G# - Free award winning reference based OOP for LV

Programmatically determine control default value

Hullo,
I'm trying to figure out a reasonably supportable method for detecting whether a sub VI's input is wired.
I'm using the approach of setting a nonsensical default value for the control, then comparing the control's current value to a constant of this value. If they're not equal, then I pass the control's value into my shift register. If they are equal, I retain whatever value was previously in the shift register. In this instance, I've created an action engine that allows me to update status and progress bars.
This works because my progress counter is a U8 which I will only ever write 0-100 to, so I can set my default to something outside this range (here, 255) for my comparison. Something similar should be relatively simple to understand and reuse in the future.
However, there's a dependency on someone setting the default value for the control and then updating the comparison constant to match. My question: is there a method for checking the default value of a control programmatically in order to remove the coupling? I realise that any method would invariably be slower in terms of execution, but this is merely out of curiosity.
CLD
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Thanks tst.
I was thinking more of future expandability and use rather than maintenance.
The default value method works for any input for which you can define a default value, so it can be used for anything your imagination stretches to. This may be a trivial example, but I can foresee someone in the future copying the architecture and ignoring the documentation.- but that's my problem, not anyone else's!
As I mentioned, it was mostly out of curiosity rather than an actual wish to use it. I'll have a look at the default value via scripting for posterity, but if you were going down the scripting route you could also use the Terminal Checker method. This doesn't work in the RTE either, though.
Thanks again!
CLD

Control/Default values in Service Notifications and Service Orders

Hi all,
When in transaction IW52 and IW32 I know you can maintain a set of default values for when you are either creating a Service Notificaiton and/or a Service Order.
My scenario is as follows:-
User 1 has a set of default values and it contains Work Centre A. User 1 then creates a Service Notification.
User 2 has a set of default values and it contains Work Centre B. User 2 then reviews the Service Notification created by User 1 and wishes to create a Service Order.
When User 2 creates the Service Order, the default value for the Work Centre is using User 1's Work Centre (Work centre A) and not their own Work Centre of Work Centre B?
What is stopping User 2 picking up their own Work Centre of Work Centre B when they want to create a Service Order from a Service Notification?

Gary,
The order takes its data from the notification (which got it from USER1's defaults).
What you need to do is change the notification work centre to that of USER2's preferred default value.
There is no standard setting for this. However, all is not lost. It may be possible by misuing one of the order user-exits
PeteA

File path defaulted to 'C:\fakepath' when attaching an original on PLM WUI

Hi,
When trying to attach an original via PLM WUI, we notice that the file path is defaulted as 'C:\fakepath' instead of the document path of the original.
We see this behaviour happening only with PLM WUI, and the functionality works perfectly fine with SAP GUI.
Any expert opinions appreciated.
Regards,
Vivek Pandey

HI Vivek,
If you go to Internet Explorer; Tools; Internet Option; Security; Custom; find the "Include local directory path when uploading files to a server" (it is quite a ways down) and click on "Enable" You may have to restart your computer, but this works & eliminates that "fakepath" that inhibits the upload file path.
Regards
Abhishek Aynipully

Initializing Control Inputs to default value.

This may be a stupid question, but I am new to labview. When the VI is started I want it to read the data from the PLC(via the OPC Server)initially to set up the controls default value. Then if the user wants to change it, they can type a new vlaue.
Currently every time you start labview in clobbers the data in the PLC with its default value. I thought of using a write on change tag, but then it doesnt show what the current set point is.
Thanks
Thad

If you wanted to get the PLC values before makeing any changes to them, I would recommend using a Tag Read and update your front panel control with the use of a local variable. This would be an initialization routine.
Another possible answer to your question is that you will want to use the Options >> Make Current Values Default selection on your Front Panel. This way anytime your VI is reloaded it will start with these default values.
Thanks,
Bryce

Selecting Multiple File Types With Path Control

My application uses a file path control for the user to specify an output file. This output file can have two different formats (.csv or .mbf) which is unknown until the user specifies it through the file dialogue. However, when the user inputs a file name with a .mbf extension (test.mbf, for example), the file path control automatically appends the typed-in name with a .csv extension (test.mbf.csv). Given that the Pattern field on the control is written like this: *.csv; *.mbf., it seems that the control is simply taking the first file pattern listed and appending it to whatever is typed into the File Name field in the file dialogue box. Selection Mode is set to "Files" and "New or existing".
Anyone know a way to smarten up the file control to recognize the appropriate file type?
Using LabVIEW 8.6.1.
Thanks!
Andrew
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Instead of using the file path control, try using the Fial Dialog Express VI. This will bring up the same dialog box but will allow you much more flexibility. Replace your file path control with a button ("Specify Path" in my example code):

How do I reference "ok" button in file path?

Here's a quick question, I am using the LabVIEW file path control icon, when you hit the little file browser up pops the window where one can browse and select a file. Once they are happy they can hit the OK button. I am trying to embed this as a part of another program which I want to wait until the OK button is pressed. Where is the property node for the "OK" button? I can't seem to find it.
Attachments:
picture of path.png ‏26 KB
path2.png ‏54 KB

altenbach wrote:
adamsdaq wrote:
I want to wait in the program I am running. The real issue is I have the individual instance of this VI working great, however when I go to run it as a subVI embedded in a higher level program, if the path control is empty or has the wrong value the progam is not giving the operator the time to change it. Thus it would be very nice if some how I could use the operator acknowledging the correct path as a precursor to continuing with the program. I must admit I have very little experience programming in LabVIEW.
You can check the validity of the path, and if it is not suitable, call a file dialog function. Check the new path and also if the dialog go canceled and proceed as needed (ignore error, ask again, etc.)
Expection handling and such really needs to be done in code and LabVIEW has a rich selection of options. Is the path received from a connector to the subVI? Under what conditions is it empty?
I agree. I also feel it is far better to prevent the user from doing something wrong than it is to let them do it and then try to recover from it. For instance, I'd keep the "OK" button grayed out until a valid path was entered. That way you avoid having to recover from "bad path was chosen after pressing 'OK'."
Bill
(Mid-Level minion.)
My support system ensures that I don't look totally incompetent.
Proud to say that I've progressed beyond knowing just enough to be dangerous. I now know enough to know that I have no clue about anything at all.

Perl adcfgclone.pl dbTechStack default values...?

Hi!
Our config: DB 10g2.0.2, APPS 11.5.10.2
When we run "perl adcfgclone.pl dbTechStack" then some default values are shown in screen:
Do you want to use a virtual hostname for the target node (y/n)
Target instance is a Real Application Cluster (RAC) instance (y/n)
*Target system utl_file accessible directories list [var/tmpprod]:*
Number of DATA_TOP's on the target system [6]:
...Where are those settings saved and retrieved in runtime? I'd like to change some default values to some new values (i.e. number of data tops to "7", after adding some luns)... Funny, but I couldn't find the source ... of that pattern.
THX
Funky

Hsawwan
I hope I'll not disobey some rules...however here it is:
The script adcfgclone.pl calls CloneContext.class. This java code is responsible for creating the Target
Context file. The default values for the prompts are read from CTXORIG.xml (a
copy of the Source context file). There are some exceptions to this, one of
them being the "number of DATA_TOPs". This default value derives from the
number of "s_dbhome" variables in
+$ORACLE_HOME/appsutil/clone/data/stage/addbhomsrc.xml. This file is generated+
on the Source system by adpreclone.pl, and copied to the Target system during
the copy phase.
As you have uploaded your addbhomsrc.xml and it is not working as specified above indicates you may be hitting a bug.
Your default value appears to equate to "number of "s_dbhome" variables in addbhomsrc.xml 1".+
+This matches an issue reported in Bug 5345502, where an additional variable+
+added for 10g was being counted in addition to the s_dbhome variables, making+
+the default number 1 more than the source. This was fixed for both 11i and R12+
+in :-+
+- CloneContext.java 115.204+
+- CloneContext.java 120.31+
+As the AutoConfig/RapidClone code is collected from the Applications Tier into+
+appsutil.zip, please check the following version on your Applications Tier:-+
+- $JAVA_TOP/oracle/apps/ad/context/CloneContext.class+
+If the version is < 115.204, then you need to apply the latest RapidClone patch:+
+6718351 : 11i RAPIDCLONE CONSOLIDATED FIXES JUL/2008+
+This will deliver CloneContext.java 115.223+
+Please also check the version(s) on your Database Tier:-+
+- $ORACLE_HOME/appsutil/java/oracle/apps/ad/context/CloneContext.class+
+There is also another version on your Database Tier which is copied by adpreclone.pl+
+into the Clone stage area, so we need to confirm that version:-+
+- $ORACLE_HOME/appsutil/clone/jlib/java/oracle/apps/ad/context/CloneContext.class+
+If the version on the Apps Tier is > 115.204 and does not match those on the Database Tier, or you had to apply the suggested patch 6718351, then you need+
+to recopy the AutoConfig/RapidClone code over to the RDBMS Tier.+
+Recreate appsutil.zip using this command on the Applications Tier:+
+- perl $AD_TOP/bin/admkappsutil.pl+
+Copy the created appsutil.zip to the RDBMS ORACLE_HOME and extract it using "unzip -o" to overwrite the existing+
+code.+
+Once you have the latest version, you will need to rerun the "preparation stages" on your Source system by rerunning adpreclone.pl, so the+
+new code is copied to the clone stage area.+
+You will also need to rerun adpreclone.pl on the Apps Tier.+
+Finally, recopy the instance files to your Target system, and when you configure the Target Database Tier, and are+
+prompted for the "number of DATA_TOPs", you should now see the number match+
+that on the Source system, or more specifically, match the number of "s_dbhome"+
+variables in+
+$ORACLE_HOME/appsutil/clone/data/stage/addbhomsrc.xml.+
Rg,
Damir

Browse Path Control: Selections Not Found or Displayed

Selecting the multiple Pattern: *.xls:*.xlsx below from Path Properties does not produce the required files I am looking for, can someone point me in the right direction? As you can see from the attached, Only selecting 'All Files (".") delivers the result I am looking for. I have already pursued the following link with the same results. http://forums.ni.com/t5/LabVIEW/Add-multiple-selections-for-pattern-label-in-file-path-control/m-p/2.... I have also tried using the File Dialog Express.vi and Open/Create/Replace File.vi.
Thank you for helping me address this issue.
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Using a semicolon instead of a colon works for me.

"File Path Control" default Value

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