Restricting text entry in string control to say 10 chars

[Vishi Anand]

How can I do this?

One way would be to capture key entry events and swallow the event after 10
chars have been entered. Is that the only way?


vishi

[ian_fung]

Go to this link... there's answer to ya Q

http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500000008000000E72C0000&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0&USEARCHCONTEXT_QUESTION_0=%22length+of+string%22+limit&USEARCHCONTEXT_QUESTION_S=0

ian.f

[Gurdas]

Hi!,

Did someone find an answer to the above discussion? The link from ian.f does not work.

I have exactly the same issue and would appreciate a way out. The requirement is NOT to read 10 chars. BUT, to restrict entry itself once the user reaches the specified number of characters. Something similar to the upper and lower limit setting in a numerical control box.

Thanks!

- Gurdas

[Brett_B.]

Gurdas,
As far as I know...there is not a simple option that will allow you to do this. What you can do is, as you said, capture the event, check the number of characters with string length, then truncate when that number is greater than 10. Make sure you have selected the "update value while typing" from the right-click menu on the string control.

I have attached a simple example for LV 7.1 that performs this task....

cheers,
-Brett