requesting username and password open

[DanyckV]

Hi I want to request user name and password when opening a VI but I need to use a SubVI or one is only possible to achieve. Thanks.

[RavensFan]

Try searching the forums.  Questions like that have been asked numerous times before.

[Anjin-San]

DanyckV
In the following KB you will find how to protect your source code

Locking and Password Protecting a LabVIEW VI

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000P6wWSAS&l=en-US

[Hooovahh]

Your question is unclear because you didn't provide enough details.  Are you talking about a dialog that comes up in your software that asks for a user name and password?  If so the first rule about writing secure software, is to not wire it from scratch.  Use Windows security, DSC, or some other method if you can get away with it.

[DanyckV]

HI, I want the program to run for a popup window requesting user ID and password to open the main program.Thanks.

[Hooovahh]

If this is the case then again I'd recommend you don't re-invent the wheel and use credentials already available.  My first recommendation is to use Windows.  You can query the logged in user, and what groups they are a member of and to enable parts of the code based on who is logged in.

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000PACwSAO&l=en-US

You can also use DSC which is a toolkit from NI.  It has several other features but user login is one of them.

https://www.ni.com/en-us/shop/product/labview-datalogging-and-supervisory-control-module.html

Other than that there are examples of making custom dialogs, like this one.

https://forums.ni.com/t5/Example-Code/Simple-LabVIEW-User-Log-In-Demo-Admin-and-Operator-User-Accoun...