Thank you mrhoo for the reply,
but i'm having trouble with your suggestions - perhaps i should have explained my User Interface better.
I have two textboxes, both need to get Time input. The way I want it to look is as if I have a validator for each control, checking every time I leave the focus of either checkbox if the time range is valid. I wrote the validation function in JavaScript, I just don't know how exactly I should use it
(for instance, should I implement two custom validators, or should i work with a CompareValidator? Should I somehow access a validator to display/hide it through JavaScript?
To your suggestions -
1. Make the smaller date the start date, the larger date the end date, however they were delivered.
The user interface is pretty strict - i have a section with the earlier date control, earlier time control (the one relevant to my question), etc. and likewise for the later date / time and other data. I won't be able to move the value between the textboxes and ignore the way the input looked on the screen originally.
2. Or use the start date input to display a menu of selectable dates for the second choice.
I need the validation for Time, and i need the user to be able to enter any time in both textboxes - just as long as once focus is lost the validation method runs and displays the message if necessary.
any more suggestions please?
Thanks,
Frankie