Selenium: How to get the scroll position?

I have one test case I need to check the scroll position. If I click the url on the page, it will scroll down to the bottom of the page.

After looking into this interesting feature, here is the code I use in different browsers.

Before clicking the url, the value will be 0. After clicking the url , the value will be different.

public long GetScrollPosition()

{

  IJavaScriptExecutor executor = (IJavaScriptExecutor)_driver;

  return (long)executor.ExecuteScript("return window.pageYOffset;");

}