DashboardExporter Class

Allows you to implement server export of a dashboard or dashboard items for all platforms.

Namespace: DevExpress.DashboardCommon

Assembly: DevExpress.Dashboard.v25.1.Core.dll

NuGet Package: DevExpress.Dashboard.Core

Declaration

C#

public class DashboardExporter :
    DashboardExporterBase

VB.NET

Public Class DashboardExporter
    Inherits DashboardExporterBase

Remarks

The non-visual DashboardExporter component allows you to export the DevExpress BI Dashboard as a PDF, XLS, XLSX, and image (PNG, JPEG, SVG, GIF) without referencing dashboard UI controls ( DashboardDesigner, DashboardViewer, ASPxDashboard, and so on) or DashboardConfigurator.

To integrate the DashboardExporter into a service, register the DevExpress NuGet feed as a package source and install the DevExpress.Dashboard.Core package.

Then, create a DashboardExporter instance and use its events to configure a dashboard and the dashboard’s data sources. Call exporter’s methods to export a dashboard or dashboard item (such as DashboardExporter.ExportToPdf or DashboardExporter.ExportDashboardItemToImage).

You can also specify a dashboard state and export options to be applied in the resulting document. For this, pass a DashboardState object and the specified export options (such as DashboardPdfExportOptions or DashboardExcelExportOptions) as parameters to the ExportTo... methods.

The following code example exports a dashboard in PDF format in a console application:

View Example: BI Dashboard - Non-Visual Export Component

The DashboardExporter.ExportToPdf method exports a dashboard in a Pdf file. The following events is used to detect and display possible errors:

• DashboardExporter.ConnectionError
• DashboardExporter.DashboardItemDataLoadingError
• DashboardExporter.DataLoadingError

C#

using System;
using System.IO;
using DevExpress.DashboardCommon;

namespace DashboardExporterApp {
    class Program {
        static void Main(string[] args) {
            if(args.Length < 1 || !Directory.Exists(args[0])) {
                Console.WriteLine("Path to the dashboard and output folders are required");
                return;
            }
            string[] dashboards = Directory.GetFiles(args[0], "*.xml");
            string outputFolder = args[1];
            DashboardExporter exporter = new DashboardExporter();
            exporter.ConnectionError += Exporter_ConnectionError;
            exporter.DataLoadingError += Exporter_DataLoadingError;
            exporter.DashboardItemDataLoadingError += Exporter_DashboardItemDataLoadingError;
            foreach(string dashboard in dashboards) {
                string outputFile = Path.Combine(outputFolder, 
                    $"{Path.GetFileNameWithoutExtension(dashboard)}.pdf");
                using FileStream stream = new FileStream(outputFile, FileMode.OpenOrCreate);
                try {
                    exporter.ExportToPdf(dashboard, stream);
                }
                catch(Exception e) {
                    Console.WriteLine($"Unable to export {dashboard}.");
                    Console.WriteLine(e.Message);
                    continue;
                }
            }
            Console.WriteLine("Done!");
        }
        static void Exporter_ConnectionError(object sender,
            DashboardExporterConnectionErrorEventArgs e) {
            Console.WriteLine(
                $"The following error occurs in {e.DataSourceName}: {e.Exception.Message}");
        }
        static void Exporter_DataLoadingError(object sender, 
            DataLoadingErrorEventArgs e) {
            foreach(DataLoadingError error in e.Errors)
                Console.WriteLine(
                    $"The following error occurs in {error.DataSourceName}: {error.Error}");
        }
        static void Exporter_DashboardItemDataLoadingError(object sender, 
            DashboardItemDataLoadingErrorEventArgs e) {
            foreach(DashboardItemDataLoadingError error in e.Errors)
                Console.WriteLine(
                    $"The following error occurs in {error.DashboardItemName}: {error.Error}");
        }
    }
}

VB.NET

Imports System
Imports System.IO
Imports DevExpress.DashboardCommon

Namespace DashboardExporterApp
    Friend Class Program
        Shared Sub Main(ByVal args() As String)
            If args.Length < 1 OrElse Not Directory.Exists(args(0)) Then
                Console.WriteLine("Path to the dashboard and output folders are required")
                Return
            End If
            Dim dashboards() As String = Directory.GetFiles(args(0), "*.xml")
            Dim outputFolder As String = args(1)
            Dim exporter As New DevExpress.DashboardCommon.DashboardExporter()
            AddHandler exporter.ConnectionError, AddressOf Exporter_ConnectionError
            AddHandler exporter.DataLoadingError, AddressOf Exporter_DataLoadingError
            AddHandler exporter.DashboardItemDataLoadingError, AddressOf Exporter_DashboardItemDataLoadingError
            For Each dashboard As String In dashboards
                Dim outputFile As String = Path.Combine(outputFolder, $"{Path.GetFileNameWithoutExtension(dashboard)}.pdf")
                Using stream = New FileStream(outputFile, FileMode.OpenOrCreate)
                    Try
                        exporter.ExportToPdf(dashboard, stream)
                    Catch e As Exception
                        Console.WriteLine($"Unable to export {dashboard}.")
                        Console.WriteLine(e.Message)
                        Continue For
                    End Try
                End Using
            Next dashboard
            Console.WriteLine("Done!")
        End Sub
        Private Shared Sub Exporter_ConnectionError(ByVal sender As Object, ByVal e As DashboardExporterConnectionErrorEventArgs)
            Console.WriteLine($"The following error occurs in {e.DataSourceName}: {e.Exception.Message}")
        End Sub
        Private Shared Sub Exporter_DataLoadingError(ByVal sender As Object, ByVal e As DataLoadingErrorEventArgs)
            For Each [error] As DataLoadingError In e.Errors
                Console.WriteLine($"The following error occurs in {[error].DataSourceName}: {[error].Error}")
            Next [error]
        End Sub
        Private Shared Sub Exporter_DashboardItemDataLoadingError(ByVal sender As Object, ByVal e As DashboardItemDataLoadingErrorEventArgs)
            For Each [error] As DashboardItemDataLoadingError In e.Errors
                Console.WriteLine($"The following error occurs in {[error].DashboardItemName}: {[error].Error}")
            Next [error]
        End Sub
    End Class
End Namespace

More Examples

Non-Visual Custom Export

This example uses the DashboardExporter component in a console application to export a dashboard with a custom Funnel item.

View Example: BI Dashboard - Non-Visual Custom Export

Use MailKit to Send a Dashboard as a Document in PDF

This example sends a dashboard as an email with the MailKit email client library.

View Example: BI Dashboard - How to Use MailKit to Send a Dashboard as a Document in PDF

Email a Dashboard that Displays Different Data Depending on the Addressee

The following example uses the DashboardExporter component in a console application to email a dashboard that displays different data depending on the addressee. The MailKit email client library is used in this example.

View Example: BI Dashboard - How to Email a Dashboard that Displays Different Data Depending on the Addressee

Inheritance

Object

DashboardExporterBase

DashboardExporter