CartLog In
Mobile UI Controls
V 19.1
19.2 (EAP/Beta)
19.1
1.1
The page you are viewing does not exist in version 1.1. This link will take you to the root page.
All docs
Docs Xamarin.Forms API Reference DevExpress.Data.Filtering NullOperator
The requested page is not available for the requested platform. You are viewing the content for Default platform.

General Information

.NET Subscription

Overview

Common Tools

Project Converter
Assembly Deployment Tool
Localization Service

Desktop

Controls

WinForms
WPF
VCL
UWP (Windows 10)

Tools

WinForms Skin Editor
WPF Theme Designer
WPF Theme Editor (Legacy)
Coded UI Test Extension

Web

Controls and Extensions

ASP.NET Controls and MVC Extensions
ASP.NET Core Controls
ASP.NET Bootstrap Controls
DevExtreme
DevExtreme ASP.NET MVC Controls
Blazor Components

Tools

ASP.NET Theme Builder
ASP.NET Theme Deployer

Mainteinance Mode

ASP.NET Core Bootstrap Controls

Enterprise and Analytic Tools

Reporting
Report and Dashboard Server
Dashboard
Office File API

Quality Assurance and Productivity

CodeRush
CodeRush Classic
TestCafe Studio
Logify

Frameworks and Libraries

eXpressApp Framework (XAF)
eXpress Persistent Objects (XPO)
XPO Profiler
Core Libraries

Mobile

UI Controls for Xamarin.Forms
Charts for iOS / Xamarin.iOS
Charts for Android / Xamarin.Android
Grid for Xamarin.Forms (Legacy)
All docs
V19.1

General Information

.NET Subscription

Overview

Common Tools

Project Converter
Assembly Deployment Tool
Localization Service

Desktop

Controls

WinForms
WPF
VCL
UWP (Windows 10)

Tools

WinForms Skin Editor
WPF Theme Designer
WPF Theme Editor (Legacy)
Coded UI Test Extension

Web

Controls and Extensions

ASP.NET Controls and MVC Extensions
ASP.NET Core Controls
ASP.NET Bootstrap Controls
DevExtreme
DevExtreme ASP.NET MVC Controls
Blazor Components

Tools

ASP.NET Theme Builder
ASP.NET Theme Deployer

Mainteinance Mode

ASP.NET Core Bootstrap Controls

Enterprise and Analytic Tools

Reporting
Report and Dashboard Server
Dashboard
Office File API

Quality Assurance and Productivity

CodeRush
CodeRush Classic
TestCafe Studio
Logify

Frameworks and Libraries

eXpressApp Framework (XAF)
eXpress Persistent Objects (XPO)
XPO Profiler
Core Libraries

Mobile

UI Controls for Xamarin.Forms
Charts for iOS / Xamarin.iOS
Charts for Android / Xamarin.Android
Grid for Xamarin.Forms (Legacy)
19.2 (EAP/Beta)
19.1
1.1
The page you are viewing does not exist in version 1.1. This link will take you to the root page.
Mobile UI for Xamarin.Forms
Charts for Android / Xamarin.Android
Charts for iOS / Xamarin.iOS
Xamarin.Forms API Reference
DevExpress.Data
DevExpress.Data.Filtering
Aggregate
AggregateOperand
BetweenOperator
BinaryOperator
BinaryOperatorType
ConstantValue
ContainsOperator
CriteriaOperator
CriteriaOperatorCollection
CustomFunctionCollection
EnumProcessingHelper
FunctionCategory
FunctionOperator
FunctionOperatorType
GroupOperator
GroupOperatorType
IClientCriteriaVisitor
IClientCriteriaVisitor<T>
ICriteriaVisitor
ICriteriaVisitor<T>
ICustomFunctionOperator
ICustomFunctionOperatorBrowsable
InOperator
NotOperator
NullOperator
Members
Constructors
NullValue
OperandParameter
OperandProperty
OperandValue
UnaryOperator
UnaryOperatorType
UserValueProcessingEventArgs
DevExpress.Utils
DevExpress.XamarinForms.Charts
DevExpress.XamarinForms.Core.Themes
DevExpress.XamarinForms.DataGrid
DevExpress.XamarinForms.Navigation
DevExpress.XamarinForms.Scheduler
Android API Reference
iOS API Reference
Xamarin.Android API Reference
Xamarin.iOS API Reference

NullOperator Class

The operator that compares a value with null.

Namespace: DevExpress.Data.Filtering

Assembly: DevExpress.XamarinForms.Core.dll

Declaration

[Serializable]
public sealed class NullOperator :
    UnaryOperator

Inheritance

Object
CriteriaOperator
UnaryOperator
NullOperator
See Also