limited number of characters input into the text box

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limited number of characters input into the text box

Postby vsoong » Wed Nov 07, 2012 5:24 am

How can I limit the number of characters that can be entered into a text box? For example, a maximum of only 4 characters can be entered into the text box
--------------
| abcd |
--------------

instead of 8 characters as shown below
--------------
| abcdefgh |
--------------

I don't want to give the impression that the table will accept 8 characters when it will only accept 4.
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Re: limited number of characters input into the text box

Postby jdbruijn » Wed Nov 07, 2012 10:19 am

You can do that by setting the size of the database field.

I think you can also use the format field for this, although I haven't tried that yet.
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Re: limited number of characters input into the text box

Postby vsoong » Thu Nov 08, 2012 4:09 am

I have tried setting the size of the database field to 4 and the text box still accept more than 4 characters. Sometimes I set the data provider of the text box as a variable instead of a database field. As the size of a variable cannot be set, the text box will simply accept many, many characters.

I don't think setting a format for a text box will limit the number of characters in it. Format will determine the kind of thing you can enter in the text box, e.g. 1 or a or A or 12/03/2012.
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Re: limited number of characters input into the text box

Postby lwjwillemsen » Thu Nov 08, 2012 9:20 am

In Foxpro we had the MaxLength property on a textbox...

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Re: limited number of characters input into the text box

Postby Peter de Groot » Thu Nov 08, 2012 9:27 am

Hi,
You could use KeyListeners Plugin, https://www.servoyforge.net/projects/keylisteners, to test how many characters a text box holds and act on that.

Regards,

Peter
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Re: limited number of characters input into the text box

Postby Joas » Thu Nov 08, 2012 11:05 am

There is already a feature request for this that you can watch/vote for: https://support.servoy.com/browse/SVY-2611
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Re: limited number of characters input into the text box

Postby vsoong » Thu Nov 08, 2012 11:44 am

Thanks, Joas
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