/// <summary>
/// Is this user a member of given role.
/// </summary>
/// <param name="role">Role to check.</param>
/// <returns>Is this user a member of given role.</returns>
public bool IsInRole(Role role)
{
if (role == null)
throw new ArgumentNullException("role");
if (!ID.HasValue)
return false;
return role.IsInRole(ID.Value);
}
