XAF Blazor UI platform - BlazorApplication setup in Program.cs, AddXaf/AddXafBlazor services, InvokeAsync thread safety (critical for Blazor Server), async controller actions pattern, Blazor-specific editors, embedding custom Razor components as ViewItems using IComponentContentHolder, JavaScript interop via IJSRuntime, Detail View layout customization (tabs/groups), programmatic navigation, error handling with UserFriendlyException, SignalR configuration. Use when building or customizing XAF Blazor Server applications.
XAF Conditional Appearance - ConditionalAppearanceModule setup, [Appearance] attribute with all parameters (Criteria, TargetItems, Context, AppearanceItemType, Visibility, Enabled, FontColor, BackColor, FontStyle, CSS), criteria expression syntax, targeting multiple properties, coloring list view rows, hiding actions, dynamic appearance from code via IAppearanceEnabled/IAppearanceVisibility, model-based rules. Use when conditionally hiding, disabling, or styling UI elements in DevExpress XAF.
XAF Controllers and Actions - ViewController, ObjectViewController<TView,TObject>, WindowController, ApplicationController, controller lifecycle (OnActivated/OnDeactivated/OnViewControlsCreated/OnViewShown), SimpleAction/PopupWindowShowAction/SingleChoiceAction/ParametrizedAction full patterns, async actions in Blazor (async void + InvokeAsync), DialogController (SaveOnAccept/CanCloseWindow/Accepting/Cancelling), chaining consecutive popups, ObjectChanged/CurrentObjectChanged event refresh patterns, Frame/NestedFrame, Active/Enabled collections. Use when creating custom actions, controllers, or view logic in DevExpress XAF.
XAF custom property and list editors - BlazorPropertyEditorBase with ComponentModelBase and Razor component, WinForms WinPropertyEditor/DXPropertyEditor with CreateControlCore/OnControlValueChanged/BreakLinksToControl, custom ListEditor implementation with all required members, attribute-based and manual EditorDescriptorsFactory registration, accessing editors from controllers. Use when building custom controls, third-party component wrappers, or specialized editors in DevExpress XAF Blazor or WinForms.
XAF Analytics & Dashboards Module - DashboardsModule/DashboardsBlazorModule/DashboardsWinModule setup, DashboardData persistent object storage, IXafDashboardStorage custom storage, dashboard viewer and designer in UI, data sources for business objects (EF Core and XPO), DashboardDataProvider customization, predefined dashboards, view/design security permissions. Use when integrating DevExpress Dashboard analytics into XAF applications.
XAF Deployment - Blazor to IIS/Azure App Service/Docker, WinForms ClickOnce/MSI, database initialization (UpdateDatabaseBeforeOpen, DatabaseVersionMismatch), connection strings in appsettings.json (XPO vs EF Core keys), DevExpress license deployment (DEVEXPRESS_LICENSE_KEY env var), Serilog/ILogger integration, ASP.NET health checks, environment configuration (Development vs Production). Use when deploying DevExpress XAF Blazor or WinForms applications to production.
XAF built-in property editors and list editors - editor type mapping by data type, EditorAliases constants, [EditorAlias] attribute, [ModelDefault] for DisplayFormat/EditMask, ObjectPropertyEditor for inline sub-forms, list editor types (GridListEditor, DxGridListEditor, TreeListEditor, ChartListEditor), GridListEditor WinForms customization, DxGridListEditor Blazor customization, IModelListView/IModelColumn properties. Use when working with built-in XAF editors or customizing grid/list views.
XAF Entity Framework Core business object models - BaseObject base class, IXafEntityObject/IObjectSpaceLink/IOptimisticLock interfaces, virtual properties, DbContext setup with IDbContextFactory, one-to-many/many-to-many/one-to-one relations via navigation properties, EF Core migrations in XAF, computed columns, ObservableCollection. Use when defining business objects with EF Core ORM in DevExpress XAF.