ContainsOperator Class

An operator which checks if a collection contains at least one object matching a specific criteria.

Namespace: DevExpress.Data.Filtering

Assembly: DevExpress.Data.v19.2.dll

Declaration

public sealed class ContainsOperator :
    AggregateOperand
Public NotInheritable Class ContainsOperator
    Inherits AggregateOperand

Remarks

The ContainsOperator operator can be used to filter the contents of the XPCollection.

It's also possible to use the CriteriaOperator.Parse method to create a CriteriaOperator operator for a specific expression.

Examples

This sample code selects Person objects that contain at least one object in their Addresses collection property with the City property set to "Chicago"

The image below shows the result:

ContainsOperator

xpCollection1.Filter = new ContainsOperator("Addresses", new BinaryOperator("City", "Chicago"));
//or
xpCollection1.Filter = CriteriaOperator.Parse("[Addresses][[City] = ?]", "Chicago");

Inheritance

See Also