Binda Joshi

• Mar 10th, 2005

 

This validation should coccur at the client side, cause its easy to validate in the client side rather than shooting it all the way to the server, which increase procesign time, and all unneccssary delays.

sreenivaas

• Jun 18th, 2005

 

validation will be done in both sides i.e., at the server side and client side. Server side validation will be done even though client side validation performed on the code because of proper security reasons.

Bindu

• Jul 19th, 2005

 

Validations are suggested to be done at every end. Client side, Server side and also at Database end by using constraints, triggers etc., 
Out of client side and server side, it is always suggested to do the maximum validations at client side as the network traffic would be less. Certain times server side validations are also unavoidable though.

Jitendra Kumar Thakur

• Aug 13th, 2005

 

It should be done at Clientside, Serverside. Clientside will reduce roundtrip to server and Serverside is useful for some security reasons. Suppose a user downloaded your web page on his hardisk and after removing your client side validation code trying to access your site. Page.IsValid is there for rescue but there is some trick to bypass. In such cases unwanted users can access your site and to avoid such hacking one must do Server and Clientside validation.

satyambabu53

 Profile 

• Jul 3rd, 2006

 

client side is best because no time to take.

Tahmeem

• Sep 28th, 2006

 

As always said and some said it is good at client sid as it takes no time,but at the sam etime server side validation is also important,Take an example where you are entering a date greater than todays date ,but this may not be suitable at some cases,like i got a form where i got surgery details and am not supposed to enter a date grater than todays date and if it is a server side you can have th present date that is the system date of th server,but if only client side validation is done then the user can change the daate and can procedd with the form

Eldad Finkelstein

• Jan 13th, 2007

 

Another reason to consider server validation is a synchronization issue.

Say I want to book a ticket tomorrow for the cinema. Even if the application brings all necessary information for validation, meaning both the date format and all available dates and seats, there's still a chance that another user is requesting the same things I'm requesting, thus causing a clash.

levteck

 Profile Answers by levteck 

• Aug 14th, 2010

 

Client side for speed,
Server side for security, to prevent SQL injection use parameterized queries.