>I have as a "Save" button. In the click method of the button I want to be be sure a field is a valid date, i.e. nn/mm/yyyy where nn is a valid month, mm is a valid day and yyyy is a valid year.
>
>The format of the field is KD.
>
>How can I do that?

If you set format as D, then the field would be automatically validated.

Otherwise you may look at the special date class I developed:
Re: Replacing VFP's Invalid Date message Thread #1131737 Message #1131791