KREDOR Business Object Framework Documentation

WhereAttribute Class

Specifies a criteria to further filter the value(s) for a joined field.

For a list of all members of this type, see WhereAttribute Members.


public class WhereAttribute : Attribute

Thread Safety

Public static (Shared in Visual Basic) members of this type are safe for multithreaded operations. Instance members are not guaranteed to be thread-safe.


If more than one WhereAttributes are specified they are AND-ed. All joined fields must be decorated with the OnAttribute.


This sample shows a class with two joined fields. The second field is decorated with a WhereAttribute to load only active subscriptions.

public class Account : BusinessObject
    private int _accountID;
    private string _name;
    private int _status;
    private DateTime _createDate;

    public Person _owner;
    [On("accountid", "account_id")]
    [Where("Status", Op.Equals, SubscriptionStatus.Active)]
    public List<Subscription> _subscriptions;
    public Account() : base ()

    protected override void OnLoad()


Namespace: Kredor.BO

Assembly: KREDOR.BOFramework (in KREDOR.BOFramework.dll)

See Also

WhereAttribute Members | Kredor.BO Namespace | OnAttribute | FromAttribute | SelectFrom