Store string input in a txt file and extract later

[Antaras]

Hello Labview Community,

I'm writing af code, which prompts a user to type in a username and password. Later, when the corrent button is pressed, the user is directed to a new tab, at which one has to type in the previous typed username and password.

My problem is basically, that my program saves the input of username and password as a string in 1 line in a txt file, whose path I have to chose every time i run the program. I would like to do following improvements, but I have a hard time doing them:

1) How can I just save a certain file path for my input of username and password, so I dont have to choose a path every time i run the program?

2) How do I make my VI read the typed username and password, and compare that to a new input of username and password, in order to execute the rest of the program? My own idea is, that i want to use a simple compare function. But since i have a had time doing 1), then this is difficult. 

I would like to channel the read username and password to the constants at the red arrows:

3) I have thought about making my VI arrange my input of username and password in columns in the txt file (or just seperated into different lines) which i can read more easily. But i don't know how to read a certain area of a txt file.

I hope you guys can help!

[altenbach]

There is a path input for the write operation. Connect a valid path to it!

Do a few tutorials, there are many questionable code constructs (unneeded sequence structure, etc.)

Why do you need to loops and two event structures? Unstoppable loops?

(It is probably a really bad idea to store name/passwords in clear text.)