limit string control to number of bytes

[LVCoder]

Hi,

Is there a way to set the limit on the length of string control in number of bytes? I have a string control whose length is always going to be 3 bytes and I don't want the user to accidentally enter more bytes.

What I have done right now is have a value change event on the string and display only the 1st 3 bytes whenever the value change event occurs but I want to know if there is any direct way to set the limit on the number of bytes on the string control.

Thanks,

Ritesh

[mikeporter]

Yes, set the string control to update while typing, then create a value change event on the control that tests the length of the contents. This event will fire with each key stroke.

Mike...

[Kyle97330]

Did you set the "update while typing" property to True so that you can delete extra characters immediately after they are added instead of after people type for a while?

Apart from doing that I don't know of a way, though.

[altenbach · Accepted solution]

This has been discussed many times in the past. For example look here.

[crossrulz]

And go give this idea a kudo: Option to Limit the Number of Characters in a String Control

[altenbach]

Another related idea would be to have a fixed lenght string datatype as described in this idea.

[mikeporter]

No, update while typing is set so the event will fire with each key stroke.

Mike...

[LVCoder]

Thanks everyone! 

I am already using "String value change" event to capture the change and then displaying only the 1st 3 bytes, but altenbach's answer is more elegant that it doesn't allow keystrokes event if the number of bytes have already reached the limit, so I accepted that as a solution.

I was only hoping to find a direct property of a string control to limit the number of bytes. It seems like the rquest has been submitted mutiple times so I did my part and kudoed those requests.