UnaryOperator Class

The operator in the Criteria Language syntax that performs an operation on one expression.

Namespace: DevExpress.Data.Filtering

Assembly: DevExpress.XamarinForms.Core.dll

NuGet Package: DevExpress.XamarinForms.Core

Declaration

[Serializable]
public class UnaryOperator :
    CriteriaOperator

Related API Members

The following members return UnaryOperator objects:

• CriteriaOperator.IsNotNull()
• CriteriaOperator.IsNull()
• CriteriaOperator.Not()
• UnaryOperator.Clone()

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the UnaryOperator class.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

XDL_how-to-delete-all-criteria-corresponding-to-a-particular-field-from-criteriaoperator-e3396/CS/PatchCriteriaExample/Filtering/CriteriaPatcherSkipProperties.cs#L66

public override CriteriaOperator Visit(UnaryOperator theOperator) {
    theOperator = (UnaryOperator)base.Visit(theOperator);

VB.NET

XDL_how-to-delete-all-criteria-corresponding-to-a-particular-field-from-criteriaoperator-e3396/VB/PatchCriteriaExample/Filtering/CriteriaPatcherSkipProperties.vb#L93

Public Overrides Function Visit(ByVal theOperator As UnaryOperator) As CriteriaOperator
    theOperator = CType(MyBase.Visit(theOperator), UnaryOperator)

Inheritance

Object

CriteriaOperator

UnaryOperator

NotOperator

NullOperator