XPObjectSpace.CreateParseCriteriaScope() Method

Used when parsing a CriteriaOperator represented by a string and containing persistent objects.

Namespace: DevExpress.ExpressApp.Xpo

Assembly: DevExpress.ExpressApp.Xpo.v19.2.dll

Declaration

C#

public override IDisposable CreateParseCriteriaScope()

VB.NET

Public Overrides Function CreateParseCriteriaScope As IDisposable

Returns

Type	Description
IDisposable	An IDisposable object used to restore persistent objects from a serialized string.

Remarks

Use this method when you need to parse a CriteriaOperator from a string and you expect that it contains references to persistent objects.

C#

CriteriaOperator criteria;
using(IDisposable scope = objectSpace.CreateParseCriteriaScope()) {
  criteria = CriteriaOperator.Parse(filterString);
}

VB.NET

Dim criteria As CriteriaOperator
Using scope As IDisposable = objectSpace.CreateParseCriteriaScope()
  criteria = CriteriaOperator.Parse(filterString)
End Using

Persistent objects are serialized as a part of a CriteriaOperator in a special format and a ‘scope’ object is necessary to restore objects from a serialized string.