validation form

I wish to have an asp page, which calls on a database and has around 50 validated fields on it. From this I wish to have another form that calls on the first form and uses some of the fields. These fields may be called on more than once but all the validation will be done on the first form.

If it's an option I would suggest using ASP.NET, it has some nice built in validation controls.

If not, Your best bet is to just do server side validation. When the form is submitted, process all the fields, and if they're all OK, redirect to another page with the values in the querystring (url encoded of course).