Regular Expression Syntax

  • Thread starter Thread starter Tom
  • Start date Start date
T

Tom

I have a combo box with a blank row in it and several
other rows from a database. When the form loads, the
default is blank, thereby forcing my users to select
something.

I need assistance constructing the Validation Expression.

Can anyone help me construct the Validation Expression to
see if the row is blank?

Thanks

Tom
 
Many thanks. But can you explain the syntax.

I understand the ^ Matches the position at the beginning
of the input string
I understand that . Matches any single character.
I understand the ? is used to match the entire string.
I understand the \m is for a new row

But where does it match a BLANK ROW?



Thanks

Tom
 
In the given case ^ is "NOT"
^. - it says "without any characters, except \n
? - it's about quantity

Hope, it will help.
 
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