Comments by thowra (Top 2 by date)

One issue I do have is that my first textbox is a date which is normally populated by the user clicking on a button and then selecting a date from the resulting calendar control. I've tried placing a regular expression validator on this first textbox (my "linked", custom validator validates the second textbox) and entering an invalid date then causes the JavaScript to fail.

I have tried setting my date textbox to read-only to ensure I get a valid date but that then means the user can't clear the textbox if they change their mind!