---

name: devexpress-xaf-reports description: >- XAF Reports V2 module, data export, and printing. Covers adding the Reports module (AddReports with ReportDataType and EnableInplaceReports), CollectionDataSource and ViewDataSource for report data binding, creating predefined static reports with PredefinedReportsUpdater.AddPredefinedReport and duplicate guards, registering reports in Module.GetModuleUpdaters, in-place reports (ShowInReport Action, IsInplaceReport), invoking report preview from code via ReportServiceController.ShowPreview and IReportStorage handles, filtering report data with CriteriaOperator, passing parameters via OnBeforeShowPreview and scoped services, customizing export options (ExportOptions), printing without preview, accessing Report Designer and Report Viewer controls in Blazor (DxReportDesigner, DxReportViewer), data export from List Views (ExportController, CSV/XLS/XLSX/PDF/HTML/RTF/DOCX), and ReportDataV2 DbContext registration for EF Core. compatibility: Requires .NET 8+ (XAF v26.1). NuGet packages DevExpress.ExpressApp.ReportsV2.Blazor or DevExpress.ExpressApp.ReportsV2.Win. metadata: author: DevExpress version: "26.1" source-commit: d3734195aab7570aa015997a2feb349e3ebb34fa

DevExpress XAF — Reports V2, Data Export & Printing

The Reports V2 module integrates DevExpress XtraReports into XAF applications, enabling report design, preview, printing, and storage in the database. EF Core is the recommended ORM; examples default to EF Core (DbSet<ReportDataV2>). XPO equivalents are noted where they differ.

Prerequisites & Installation

NuGet Packages

Package	Purpose	Project
DevExpress.ExpressApp.ReportsV2.Blazor	Reports V2 Blazor module (ReportsBlazorModuleV2, DxReportDesigner, DxReportViewer)	MySolution.Blazor.Server
DevExpress.ExpressApp.ReportsV2.Win	Reports V2 WinForms module (ReportsWindowsFormsModuleV2)	MySolution.Win
DevExpress.Persistent.BaseImpl.EF	ReportDataV2 storage class for EF Core	MySolution.Module
DevExpress.Persistent.BaseImpl.Xpo	ReportDataV2 storage class for XPO	MySolution.Module (XPO only)

Module Registration

Blazor — MySolution.Blazor.Server\Startup.cs:

using DevExpress.ExpressApp.ReportsV2;

services.AddXaf(Configuration, builder => {
    builder.Modules
        .AddReports(options => {
            options.ReportDataType = typeof(DevExpress.Persistent.BaseImpl.EF.ReportDataV2);
            options.EnableInplaceReports = true;
        });
});

WinForms — MySolution.Win\Startup.cs:

builder.Modules
    .AddReports(options => {
        options.ReportDataType = typeof(DevExpress.Persistent.BaseImpl.EF.ReportDataV2);
        options.EnableInplaceReports = true;
    });

For XPO, use typeof(DevExpress.Persistent.BaseImpl.ReportDataV2) instead.

EF Core DbContext Registration

Register ReportDataV2 in your DbContext — MySolution.Module\BusinessObjects\MySolutionEFCoreDbContext.cs:

public DbSet<DevExpress.Persistent.BaseImpl.EF.ReportDataV2> ReportDataV2 { get; set; }

Predefined Reports Registration

Register predefined reports in MySolution.Module\Module.cs:

public override IEnumerable<ModuleUpdater> GetModuleUpdaters(IObjectSpace objectSpace, Version versionFromDB) {
    var updater = new DatabaseUpdate.Updater(objectSpace, versionFromDB);
    var predefinedReportsUpdater = new PredefinedReportsUpdater(Application, objectSpace, versionFromDB);
    predefinedReportsUpdater.AddPredefinedReport<XtraReport1>("Report Name", typeof(TargetClass));
    return new ModuleUpdater[] { updater, predefinedReportsUpdater };
}

---

Adding the Reports V2 Module

Refer to references/module-setup.md

When you need to:

• Add the Reports V2 module via AddReports with ReportDataType and EnableInplaceReports
• Configure ORM-specific storage (DevExpress.Persistent.BaseImpl.EF.ReportDataV2 for EF Core, DevExpress.Persistent.BaseImpl.ReportDataV2 for XPO)
• Register ReportDataV2 in an EF Core DbContext and run migration/schema update
• Determine the correct NuGet package for Blazor or WinForms

builder.Modules.AddReports(options => {
    options.ReportDataType = typeof(DevExpress.Persistent.BaseImpl.EF.ReportDataV2); // EF Core
    // options.ReportDataType = typeof(DevExpress.Persistent.BaseImpl.ReportDataV2); // XPO
    options.EnableInplaceReports = true;
    options.Events.OnBeforeShowPreview = context => {
        // context.ServiceProvider is available here
    };
});

---

Module Components

Component	Scope
ReportsModuleV2	Platform-agnostic core module
ReportsWindowsFormsModuleV2	WinForms UI integration
ReportsBlazorModuleV2	ASP.NET Core Blazor UI integration

Common Namespaces

• ReportsModuleV2, ReportServiceController: DevExpress.ExpressApp.ReportsV2
• ExportController: DevExpress.ExpressApp.SystemModule
• CollectionDataSource, ViewDataSource: DevExpress.Persistent.Base.ReportsV2 (or version-equivalent reports namespace)
• IReportStorage: DevExpress.ExpressApp.ReportsV2

Controls Used

Platform	Designer	Viewer
Blazor	DxReportDesigner	DxReportViewer
WinForms	XRDesignForm / XRDesignRibbonForm	ReportPrintTool

Always include the base module and the UI platform module that matches your application.

---

Data Sources

Source	Description	When to Use
CollectionDataSource	Loads full business objects for ObjectTypeName; supports Criteria filtering	Small datasets, custom filtering, simple reports
ViewDataSource	Loads only specified Properties by calling IObjectSpace.CreateDataView	Large datasets, performance-sensitive reports

Both require runtime IObjectSpace; design-time preview is empty.

// CollectionDataSource
var cds = new CollectionDataSource {
    ObjectTypeName = typeof(Order).FullName,
    Criteria = CriteriaOperator.Parse("[OrderDate] >= ?", startDate).ToString()
};

// ViewDataSource
var vds = new ViewDataSource {
    ObjectTypeName = typeof(Order).FullName
};
vds.Properties.Add(new ViewProperty("OrderNumber"));
vds.Properties.Add(new ViewProperty("Amount"));
vds.Properties.Add(new ViewProperty("Customer.Name"));

---

Creating Predefined & In-Place Reports

Refer to references/predefined-reports.md

When you need to:

• Register predefined static reports via PredefinedReportsUpdater.AddPredefinedReport in GetModuleUpdaters
• Add duplicate guards (FirstOrDefault/FindObject) so reports are not re-created at every startup
• Create in-place reports (isInplaceReport: true or IsInplaceReport = true) for the ShowInReport action
• Understand the PrintSelectionBaseController and Copy Predefined Report action

public override IEnumerable<ModuleUpdater> GetModuleUpdaters(IObjectSpace objectSpace, Version versionFromDB) {
    var updater = new DatabaseUpdate.Updater(objectSpace, versionFromDB);
    var reportsUpdater = new PredefinedReportsUpdater(Application, objectSpace, versionFromDB);

    if (objectSpace.FirstOrDefault<ReportDataV2>(r => r.DisplayName == "Invoice") == null) {
        reportsUpdater.AddPredefinedReport<InvoiceReport>("Invoice", typeof(Invoice), isInplaceReport: true);
    }

    return new ModuleUpdater[] { updater, reportsUpdater };
}

---

Invoking Report Preview from Code

Refer to references/report-preview.md

When you need to:

• Show a report preview programmatically via Frame.GetController<ReportServiceController>()
• Resolve IReportStorage from DI and build a string handle with GetReportContainerHandle(reportData)
• Filter report data by selected objects or custom CriteriaOperator
• Apply parameterized criteria safely for user input

var reportController = Frame.GetController<ReportServiceController>();
var reportStorage = Application.ServiceProvider.GetRequiredService<IReportStorage>();
using var os = Application.CreateObjectSpace(typeof(ReportDataV2));
var reportData = os.FirstOrDefault<ReportDataV2>(d => d.DisplayName == "Sales Report");
string handle = reportStorage.GetReportContainerHandle(reportData);

CriteriaOperator criteria = CriteriaOperator.FromLambda<Order>(
    o => o.AssignedTo.Oid == currentUserId);
reportController?.ShowPreview(handle, criteria);

---

Passing Parameters to Reports

Refer to references/report-parameters.md

When you need to:

• Pass custom parameter values from a controller to a report at preview time
• Use a scoped service (ReportPreviewContext) to bridge controller and report events
• Read parameters in options.Events.OnBeforeShowPreview via context.ServiceProvider

---

Report Events & Export Options

Refer to references/report-events-export.md

When you need to:

• Handle OnReportLoaded (post-load) and OnBeforeShowPreview (pre-display) events
• Configure PDF, XLS, XLSX, or HTML export options via ExportOptions
• Apply export settings globally through a reusable helper

builder.Modules.AddReports(options => {
    options.ReportDataType = typeof(ReportDataV2);

    options.Events.OnReportLoaded = context => {
        // report loaded from storage
    };

    options.Events.OnBeforeShowPreview = context => {
        var scopedContext = context.ServiceProvider.GetService<ReportPreviewContext>();
        if (scopedContext != null && context.Report.Parameters["StartDate"] != null) {
            context.Report.Parameters["StartDate"].Value = scopedContext.ParameterValue;
        }
        context.Report.ExportOptions.Pdf.NeverEmbedFonts = true;
        context.Report.ExportOptions.Xlsx.SheetName = "Report Data";
    };
});

---

Printing Without Preview & Data Export

Refer to references/printing-and-export.md

When you need to:

• Print a report directly without showing preview using an abstract controller pattern
• Use IReportExportService to load, set up, and print/export reports from code
• Access ExportController from Frame.GetController<ExportController>() and execute export programmatically
• Check supported export formats and extensions (XLSX, XLS, CSV, PDF, HTML/MHT, RTF, DOCX)

---

Troubleshooting

Symptom	Cause	Solution
Reports List View empty	Reports not registered	Call AddPredefinedReport in GetModuleUpdaters
Duplicate report entries after restart	Updater adds same report each startup	Add existence check (FirstOrDefault/FindObject) before registration
Design-time preview empty	Data sources require runtime IObjectSpace	Preview in running application
ShowInReport action not visible	No in-place reports or feature disabled	Set isInplaceReport: true / IsInplaceReport = true and EnableInplaceReports = true
ShowPreview throws or shows nothing	Null ReportDataV2, wrong object space scope, or invalid handle	Load ReportDataV2 from a valid IObjectSpace, resolve IReportStorage, and pass GetReportContainerHandle(reportData) result
Report shows all records	No criteria passed or criteria set too late	Pass criteria to ShowPreview(handle, criteria) or set datasource criteria in OnBeforeShowPreview
Parameters not applied	OnBeforeShowPreview not configured	Configure options.Events.OnBeforeShowPreview in AddReports
Export action missing	ExportController not active for current view/editor	Run from supported List View/editor and check controller activation
ReportDataV2 table missing (EF Core)	Not in DbContext or schema not updated	Add DbSet<ReportDataV2> and run migration/schema update

Constraints & Rules

1. Code-first configuration only: configure reports via C# code (AddReports, PredefinedReportsUpdater, controllers).
2. Use CollectionDataSource or ViewDataSource — standard SqlDataSource is not supported by the Reports V2 module.
3. Scripts over events for predefined reports that users can copy — use XtraReport.Scripts instead of C# events where customization must persist into copied reports.
4. Use parameterized criteria for user input: avoid concatenating raw values into criteria strings.
5. Version consistency: all DevExpress packages should use the same version.

Using DevExpress Documentation MCP

Check your available tools for devexpress_docs_search / devexpress_docs_get_content — installing this skill as a full plugin registers the dxdocs MCP server automatically, but skills copied in directly may not have it connected, and the tool name may carry a host-specific prefix. If present (match on any tool whose name contains devexpress_docs_search/devexpress_docs_get_content), use it to verify API details before writing code; if not, rely on this skill's own reference files.

• Search: devexpress_docs_search(technologies=["eXpressAppFramework"], question="<your question>")

• Fetch: devexpress_docs_get_content(url="<documentation URL>")

• Reports V2 overview: devexpress_docs_get_content(url="https://docs.devexpress.com/content/eXpressAppFramework/113591/shape-export-print-data/reports/reports-v2-module-overview?md=true")

• Add Reports module: devexpress_docs_get_content(url="https://docs.devexpress.com/content/eXpressAppFramework/404243/shape-export-print-data/reports/add-reports-module-to-an-existing-xaf-application?md=true")

• Predefined reports: devexpress_docs_get_content(url="https://docs.devexpress.com/content/eXpressAppFramework/113645/shape-export-print-data/reports/create-predefined-static-reports?md=true")

• Invoke preview from code: devexpress_docs_get_content(url="https://docs.devexpress.com/content/eXpressAppFramework/113703/shape-export-print-data/reports/invoke-the-report-preview-from-code?md=true")

• Data sources: devexpress_docs_get_content(url="https://docs.devexpress.com/content/eXpressAppFramework/113593/shape-export-print-data/reports/data-sources-for-reports-v2?md=true")

• In-place reports: devexpress_docs_get_content(url="https://docs.devexpress.com/content/eXpressAppFramework/113602/shape-export-print-data/reports/in-place-reports?md=true")

• Export data: devexpress_docs_get_content(url="https://docs.devexpress.com/content/eXpressAppFramework/113362/shape-export-print-data/export-data?md=true")

• Print without preview: devexpress_docs_get_content(url="https://docs.devexpress.com/content/eXpressAppFramework/113601/shape-export-print-data/reports/task-based-help/how-to-print-a-report-without-displaying-a-preview?md=true")

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