How do you restrict a field to contain alphanumeric characters only?
2004-08-01 21:20
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This is an example of code that uses regular expressions to limit a field's entry. Put this in a field's Input Validation formula:
@If( @Matches(Serial_Num; "+{0-9}"); @Success;@Matches(Serial_Num; "+{a-zA-Z}"); @Success;@Do(@Prompt([OK];
"Invalid Serial Number";
"The Unit Serial Number contains an illegal character, probably a carriage return. Please remove the illegal character and save again.");
@Return("")) )
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