validate a textbox; date

I have a textbox where a date is being entered.   I am using a CompareValidator to check that it's a date. See below.  However, I also want to make sure the date is NOT greater than the current date.     I believe I can also use a CompareValidator to do this; however, when I put two Compare Validators on the page that whose ControlToValidate property is the same text box, this does not seem to be allowed.

Any ideas on how I can do both checks?  

<asp:CompareValidator id="validator_client_dob1" runat="server" display="static" text="*" Type="Date" Operator="DataTypeCheck" ControlToValidate="client_dob" ErrorMessage="Invalid Client DOB.">
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

you could change the validator you use to check if date is valid to a customvalidator or even a rangevalidator:

<asp:RangeValidator ID ="validator_client_dob1" runat ="server" ControlToValidate="client_dob" ErrorMessage="Invalid Date" Type="Date" MinimumValue="01/01/1900" MaximumValue="01/01/2100" Display="Dynamic"></asp:RangeValidator>

Open in new window

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
HLRosenbergerAuthor Commented:
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
.NET Programming

From novice to tech pro — start learning today.