How to avoid Page_Load() on button click?

Question

I have two buttons, preview and Save. With help of preview button user can view the data based on the format and then can save.

But when preview is clicked, one text

Answer 1

I had the same problem and the solution above of "CausesValidation="False"" and even adding "UseSubmitBehavior="False"" DID NOT work - it still called "Page_Load" method.

What worked for me was adding the following line up front in Page_Load method.

if (IsPostBack) return; 

I am mentioning this if it helps someone (I meant to comment above but StackOverflow did not allow me to comment because I am a new user - hence a new reply).