Boolean Properties

• Jan 27, 2026
• 2 minutes to read

In XAF, the following controls can display Boolean and Nullable Boolean properties:

• A checkbox control (default).
• A drop-down control that displays Boolean values as custom text strings. You can use the IModelCommonMemberViewItem.CaptionForTrue and IModelCommonMemberViewItem.CaptionForFalse properties to specify these strings in the Application Model.
• A drop-down control can display Boolean values as custom text strings accompanied by images. You can define these strings in the same manner as for a drop-down control. Use the IModelCommonMemberViewItem.ImageForTrue and IModelCommonMemberViewItem.ImageForFalse properties to assign images for the true and false values.

Refer to the following topics for more ORM-specific information on Boolean properties:

• Boolean Properties in XPO
• Boolean Properties in EF Core

ASP.NET Core Blazor

In ASP.NET Core Blazor, BlazorPropertyEditorBase.ComponentModel returns an IComponentModel descendant that wraps properties and events of a corresponding ASP.NET Core Blazor Editor.

The following table shows available Component Models for BooleanPropertyEditor:

IComponentContentHolder descendant	Component	Description
DevExpress.ExpressApp.Blazor.Components.Models.DxCheckBoxModel<T>	DxCheckBox<T>	The default control.
DevExpress.ExpressApp.Blazor.Components.Models.DxComboBoxModel<TData, TValue>	DxComboBox<TData, TValue>	This component is used when one of the following property pairs is specified: CaptionForFalse and CaptionForTrue ImageForFalse and ImageForTrue

WinForms

Each Windows Forms Property Editor is available in two forms:

• A standalone control (displays property value in a Detail View)
• A repository item (displays property value in a List Editor that supports in-place editing)

The following table shows available controls and repository items for BooleanPropertyEditor:

Control	Repository item	Description
BooleanEdit (a CheckEdit descendant).	RepositoryItemBooleanEdit (a RepositoryItemCheckEdit descendant).	A CheckEdit control (default).
BoolComboBoxEdit (an ImageComboBoxEdit descendant).	RepositoryItemBoolComboBoxEdit (a RepositoryItemImageComboBox descendant).	A drop-down control with custom text. An optional image is displayed next to the text when one of the following property pairs is specified: CaptionForFalse and CaptionForTrue ImageForFalse and ImageForTrue