title: 'Static readonly' vs. 'const'
body: <p>I've read around about <code>const</code> and <code>static readonly</code> fields. We have some classes which contain only constant values. They are used for various things around in our system. So I am wondering if my observation is correct:</p>
  <p>Should these kind of constant values always be <code>static readonly</code> for everything that is public? And only use <code>const</code> for internal/protected/private values?</p>
  <p>What do you recommend? Should I maybe even not use <code>static readonly</code> fields, but rather use properties maybe?</p>