ValidateFor getting triggerd

Hi,

I have a textarea in my form which is binded to property remark.

When I am adding Required[] annotation. It getting triggered at before submit button.

I have 2 from on the .cshm.

First form also has submit button. On click of thei ssubmit i fetch some data from controller on post and then render second form.

Bt Required validator gets triggered to Remark Tex area.