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.NET Framework 4.5.2+

PersistentBase.IsLoading Property

Indicates whether the object is currently being initialized.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v22.2.dll

NuGet Package: DevExpress.Xpo


public bool IsLoading { get; }

Property Value

Type Description

true if the object is currently being initialized; otherwise, false.


While XPO is modifying an object, the object is considered to be initialized. While an object is in this state, you shouldn’t access its properties or change the property values. The object is considered to be initialized in the following cases:

  • The object is being loaded from a data source.
  • The parent session (or unit of work) gets the changes made within its nested session.
  • Data editing has been canceled.
  • The optimistic concurrency and autogenerated key(s) are being processed.

If you need to enforce a business rule in a persistent class’ property setter or getter, ensure that the object is not currently being initialized. The following code snippet illustrates this.

public class Order : XPObject {
    // ...
    private decimal fTotal;
    public decimal Total {
        get { return fTotal; }
        set {
            SetPropertyValue(nameof(Total), ref fTotal, value);
            if(!IsLoading && !IsSaving) {
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