xaf-reports（XAF 报告）

XAF: Reports Module (XtraReports)

Setup

NuGet Packages

<!-- Core -->
<PackageReference Include="DevExpress.ExpressApp.ReportsV2" Version="25.1.*" />
<!-- Blazor -->
<PackageReference Include="DevExpress.ExpressApp.ReportsV2.Blazor" Version="25.1.*" />
<!-- WinForms -->
<PackageReference Include="DevExpress.ExpressApp.ReportsV2.Win" Version="25.1.*" />

Blazor Program.cs

b.AddModule<ReportsModuleV2>(options => {
    options.ReportStoreMode = ReportStoreModes.XML; // or DB
    options.EnableInplaceReports = true; // show designer in browser
});

// Required for Blazor report viewer
services.AddDevExpressBlazorReporting();

WinForms

// In WinApplication.cs
Application.Modules.Add(new ReportsModuleV2 {
    ReportStoreMode = ReportStoreModes.XML
});
Application.Modules.Add(new ReportsWindowsFormsModuleV2());

Report Storage

Database Storage (default)

Reports stored in ReportDataV2 persistent objects. Requires DbSet<ReportDataV2> (EF Core) or auto-added by XPO.

// EF Core DbContext
public DbSet<ReportDataV2> ReportDataV2 { get; set; }

XML / Filesystem Storage

options.ReportStoreMode = ReportStoreModes.XML;
// Reports stored as .repx files in defined folder

Custom Storage

public class MyReportStorage : IReportStorageWebExtension {
    public bool CanSetData(string url) => true;
    public bool IsValidUrl(string url) => true;
    public byte[] GetData(string url) { /* load from DB/API */ }
    public Dictionary<string, string> GetUrls() { /* list all reports */ }
    public void SetData(XtraReport report, string url) { /* save */ }
    public string SetNewData(XtraReport report, string defaultUrl) { /* create new */ }
}

// Register:
ReportStorageWebExtension.RegisterExtensionGlobal(new MyReportStorage());

Creating Predefined Reports in Code

// 1. Define the report class (code-first)
public class ContactListReport : XtraReport {
    public ContactListReport() {
        // Report layout defined here or loaded from .repx
        var band = new DetailBand();
        var label = new XRLabel { DataBindings = { new XRBinding("Text", null, "FullName") } };
        band.Controls.Add(label);
        Bands.Add(band);
    }
}

// 2. Register via PredefinedReportsUpdater
public class MyPredefinedReportsUpdater : PredefinedReportsUpdater {
    public MyPredefinedReportsUpdater(
        IObjectSpaceFactory objectSpaceFactory,
        ITypesInfo typesInfo,
        Version currentApplicationVersion)
        : base(objectSpaceFactory, typesInfo, currentApplicationVersion) { }

    public override void AddPredefinedReports() {
        AddPredefinedReport<ContactListReport>(
            "Contact List",          // display name
            typeof(Contact),         // data type (for navigation)
            isInplaceReport: false); // true = shows inside Detail View
    }
}

// 3. Register the updater in Module.cs
public override void Setup(ApplicationModulesManager moduleManager) {
    base.Setup(moduleManager);
    if (Application != null) {
        Application.SetupComplete += (s, e) => {
            Application.ServiceProvider
                .GetRequiredService<PredefinedReportsUpdater>()
                .UpdatePredefinedReports();
        };
    }
}

Data Sources

CollectionDataSource (in-memory, from ObjectSpace)

public class MyReport : XtraReport {
    public MyReport(IObjectSpace objectSpace) {
        var contacts = objectSpace.GetObjects<Contact>();
        DataSource = contacts;
        DataMember = "";
    }
}

EntityServerModeSource (server-side processing — EF Core)

using DevExpress.Data.Linq;

public class MyLargeReport : XtraReport {
    public MyLargeReport(IDbContextFactory<MyDbContext> factory) {
        var ctx = factory.CreateDbContext();
        DataSource = new EntityServerModeSource {
            KeyExpression = "ID",
            QueryableSource = ctx.Contacts.Where(c => c.Active)
        };
    }
}

Report Parameters

public class OrdersByDateReport : XtraReport {
    public OrdersByDateReport() {
        var fromDate = new Parameter {
            Name = "FromDate",
            Description = "From Date",
            Type = typeof(DateTime),
            Value = DateTime.Today.AddMonths(-1)
        };
        Parameters.Add(fromDate);

        // Use in filter:
        FilterString = "[OrderDate] >= ?FromDate";
    }
}

Triggering Print Preview from Controller

using DevExpress.ExpressApp.ReportsV2;

public class PrintOrderController : ObjectViewController<DetailView, Order> {
    private SimpleAction printAction;

    public PrintOrderController() {
        printAction = new SimpleAction(this, "PrintOrder", PredefinedCategory.View) {
            Caption = "Print"
        };
        printAction.Execute += PrintAction_Execute;
    }

    private void PrintAction_Execute(object sender, SimpleActionExecuteEventArgs e) {
        var order = (Order)View.CurrentObject;
        var reportController = Frame.GetController<ReportServiceController>();

        // Show print preview
        reportController.ShowInReportDesignerAction.DoExecute(
            ObjectSpace.FindObject<ReportDataV2>(r => r.DisplayName == "Order Report"));
    }
}

Programmatic Export

using DevExpress.XtraReports.UI;
using DevExpress.ExpressApp.ReportsV2;

public async Task ExportReportToPdf(IObjectSpace objectSpace, string outputPath) {
    var reportData = objectSpace.FindObject<ReportDataV2>(
        CriteriaOperator.Parse("DisplayName = ?", "Contact List"));

    var report = ReportDataProvider.ReportsStorage.LoadReport(reportData);
    report.DataSource = objectSpace.GetObjects<Contact>();

    using var stream = new FileStream(outputPath, FileMode.Create);
    report.ExportToPdf(stream);
}

// Export options:
report.ExportToPdf(stream);
report.ExportToXlsx(stream);
report.ExportToDocx(stream);
report.ExportToHtml(stream);

Security Permissions

// Users can view but not design reports
role.AddTypePermission<ReportDataV2>(SecurityOperations.ReadOnlyAccess,
    SecurityPermissionState.Allow);

// Designers can create and edit
role.AddTypePermission<ReportDataV2>(SecurityOperations.FullAccess,
    SecurityPermissionState.Allow);

In-App Report Designer

• Blazor: Embedded via DxReportDesigner component; requires EnableInplaceReports = true
• WinForms: Native XtraReport Designer hosted within application

v24.2 vs v25.1 Notes

• v24.2: ReportsModuleV2 stable API
• v25.1: Enhanced Blazor viewer performance;.NET 9 support; improved parameter UI

Source Links

• Reports Module: https://docs.devexpress.com/eXpressAppFramework/113591/shape-export-print-data/reports
• Create Reports: https://docs.devexpress.com/eXpressAppFramework/113792/shape-export-print-data/reports/create-reports
• Print Preview: https://docs.devexpress.com/eXpressAppFramework/113788/shape-export-print-data/reports/print-preview
• PredefinedReportsUpdater: https://docs.devexpress.com/eXpressAppFramework/DevExpress.ExpressApp.ReportsV2.PredefinedReportsUpdater
• IReportStorageWebExtension: https://docs.devexpress.com/XtraReports/DevExpress.XtraReports.Web.Extensions.ReportStorageWebExtension