>I want to display a message "Invalid date" if the user keys in an invalid date into a text box. The only way I've seen to do this is to bind the text box to a date field, but this text box is on a pop-up dialog box which has no tables. I added a dummy table just to get the validation, but there must be a better way.
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>thank in advance

Enter a date value in the VALUE property of the field. This will force a date type entry. If you want a blank date, then enter { } (Braces separated by a couple of spaces).

HTH
Barbara