which validations are increase application performance javascript or asp validation controls?

The type of Validation to be chosen depends upon the scenario for which you are building your application. You have to either negotiate in terms of security of performance. If security is a primary concern than you shall stick to Server side validation.

I personally recommend Server side validations If client-side validation is bypassed, your server-side validations come to rescue you from any potential damage to your server-side processing. In recent times, we have already heard lot of stories of SQL Injections and other sort of techniques that might be applied in order to gain some evil benefits.

On contrary client script validations optimize and enhance performance Client-side validation reduce the server-side round-trips so that the number of requests per user are considerably reduced.

Hi raxhemanth,

As Jas24 said, its not safe to depend on javascript validation
But you are asking about performance so javascript gives you more performance.
For instance if you implementing string name validation in client side and you succeed on it,(thats not enough)
now try to implement server side validation like this to get safer validation

private bool isValidName(string name)
        {
            bool retBool = false;
            if (!string.IsNullOrEmpty(name)) //You can add your own condition
            {
                retBool =  true;
            }
            return retBool;
        }

Which ensures in server side also, so that no invalid data will be inserted into DB.
So its always safe to implement Client side and Server side validation.

Hope this helps you a bit.

Regards,
RK