Selenium OnClick identify button C#

Question

How to identify this button in C#:

 <button class="reward_link_redeem_button_style" onclick="RedeemRPProduct('free_points_1')">REDEEM</button>
 <button class="reward_link_redeem_button_style " onclick="RedeemRPProduct('free_points_50')">REDEEM</button>

But there are like 4 buttons called equal, and to differentiate them you need the ('free_points_1') as well as ('free_points_10'), etc.

Answer 1

1. Using CSS selector

   .reward_link_redeem_button_style
   

   OR

   button[class='reward_link_redeem_button_style']
   

2. Using xpath

   //button[contains(.,'REDEEM')]
   

   OR

   //button[contains(@onclick,'RedeemRPProduct')]
   

Update

As per recent update content. You can locate the element using onclick attribute as it make the element unique. Use below xpath :

//button[contains(@onclick,'free_points_50')]