PreviewReportCustomizationService Class

Enables you to customize the current report and assign a CachedReportSourceWeb object when the Report Designer is about to be switched to the Preview tab.

Namespace: DevExpress.XtraReports.Web.ReportDesigner.Services

Assembly: DevExpress.XtraReports.v24.2.Web.dll

NuGet Package: DevExpress.Web.Reporting.Common

Declaration

C#

public class PreviewReportCustomizationService

VB.NET

Public Class PreviewReportCustomizationService

Remarks

You can create a descendant from the PreviewReportCustomizationService and override the following methods:

• CustomizeReport - allows you to change the report’s settings when it is about to be previewed. These changes are in effect only in the Preview tab.
• CreateCachedReportSource - is called after the CustomizeReport method and allows you to assign a CachedReportSourceWeb object to the customized report.

The following example demonstrates how to use this service to change the report’s orientation and assign a new CachedReportSourceWeb instance.

C#

using DevExpress.XtraReports.UI;
using DevExpress.XtraReports.Web;
using DevExpress.XtraReports.Web.ReportDesigner.Services;

public class MyPreviewReportCustomizationService: PreviewReportCustomizationService {
    public override void CustomizeReport(XtraReport report) {
        report.Landscape = true;
    }

    public override CachedReportSourceWeb CreateCachedReportSource(XtraReport report) {
        return new CachedReportSourceWeb(report);
    }
}

VB.NET

Imports DevExpress.XtraReports.UI
Imports DevExpress.XtraReports.Web
Imports DevExpress.XtraReports.Web.ReportDesigner.Services

Public Class MyPreviewReportCustomizationService
    Inherits PreviewReportCustomizationService

    Public Overrides Sub CustomizeReport(ByVal report As XtraReport)
        report.Landscape = True
    End Sub

    Public Overrides Function CreateCachedReportSource(ByVal report As XtraReport) As CachedReportSourceWeb
        Return New CachedReportSourceWeb(report)
    End Function
End Class

Then, register your custom service implementation at the application’s startup.

ASP.NET Web Forms and ASP.NET MVC

C#

using DevExpress.XtraReports.Web.ReportDesigner;
using DevExpress.XtraReports.Web.ReportDesigner.Services;

void Application_Start(object sender, EventArgs e) {
    DefaultReportDesignerContainer.Register<PreviewReportCustomizationService, MyPreviewReportCustomizationService>();
}

VB.NET

Imports DevExpress.XtraReports.Web.ReportDesigner
Imports DevExpress.XtraReports.Web.ReportDesigner.Services

Private Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
    DefaultReportDesignerContainer.Register(Of PreviewReportCustomizationService, MyPreviewReportCustomizationService)()
End Sub

ASP.NET Core

C#

using DevExpress.XtraReports.Web.ReportDesigner.Services;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddSingleton<PreviewReportCustomizationService, MyPreviewReportCustomizationService>();

var app = builder.Build();

Inheritance

Object

PreviewReportCustomizationService