Get Users

GetUsers.cs

UsersResource.ListRequest request = _ds.Users.List();
...
request.Domain = _domain;

Users uGapi = request.Execute();
List<User> users = uGapi.UsersValue.ToList();
...
int page = 1;
while(!string.IsNullOrEmpty(uGapi.NextPageToken) && page <= THRESHOLD)
{
    request.PageToken = uGapi.NextPageToken;  // First page is null
    uGapi = request.Execute();
    users.AddRange(uGapi.UsersValue.ToList());
    page++;
    if(page > THRESHOLD && !string.IsNullOrEmpty(uGapi.NextPageToken)) 
    { 
        // Error
        break;
    }
}
foreach (var userItem in users)
{
  // Key elements
  list.Add(new UserData {
      ID = userItem.Id,                       // Identity ID
      PrimaryEmail = userItem.PrimaryEmail,   // Primary email
      ...
      Active = !(userItem.Suspended ?? false) // Is active
  });
}