Background and Motivation

There's currently no way to access all cookies in a CookieContainer instance without known their domain names. CookieContainer also does not expose a list of domains it holds cookies for. I propose adding a GetAllCookies() method for this. It seems I'm not the only one with a use-case for it https://stackoverflow.com/questions/15983166/how-can-i-get-all-cookies-of-a-cookiecontainer

Latest API proposal

Based on discussion below - #44094 (comment)

public class CookieContainer
{
  // Existing API:
  public CookieCollection GetCookies(Uri uri);

  // Proposed API:
  public CookieCollection GetAllCookies();
}

Original API proposal

 public IEnumerable<Cookie> GetAllCookies();

or

class CookieContainer : IEnumerable<Cookie>