Class Library Set Property / Field Default or Initial Values?

Q. How do I set the Property / Field Default or Initial values in a Class Library (.dll)?

I've read about Attributes and it doesn't seem the best approach. The example below is a simple illustration of properties/fields which need to be used, but don't neccessarilly need user setup. Note: it'a a static class.

   

public static class FtpClient
    {
         private static bool _useBinary = false;

         public static bool UseBinary
         {
              set { _useBinary = value; }
          }
     }