[FieldStorage(ColumnName = "LoginName"),StringDataType(60)]
public string LoginName
{
	get { return m_LoginName; }
	set {CheckPropertyChanged<string>(()=>LoginName, ref m_LoginName, value);}
}private string m_LoginName;

[ChildStorage(ChildType = typeof(UserProfile), IsReference = true, LazyLoad = _
  LazyLoadMode.Off, LazyLoadUsingProxy = false)]
[ForeignKey(ParentFieldName = "UserProfileID", ChildFieldName = "ID")]
public UserProfile UserProfile;

ValidationRules.AddRule(Validation.CommonRules.StringRequired, "LoginName");