C# (CSharp) CustomerStates.GetCustomerIdの例

コード例 #1

 public Maybe <Guid> Handle(GetCustomerIdByUsernameQuery query)
 {
     return(_archive.GetCustomerId(query.Username));
 }

コード例 #2

 public bool Handle(IsUsernameAvailableQuery query)
 {
     return(!_archive.GetCustomerId(query.Username).HasValue());
 }