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DashboardViewer.CustomExport Event

Allows you to customize the exported document.

Namespace: DevExpress.DashboardWin

Assembly: DevExpress.Dashboard.v22.1.Win.dll


public event CustomExportEventHandler CustomExport

Event Data

The CustomExport event's data class is CustomExportEventArgs. The following properties provide information specific to this event:

Property Description
ExportAction Gets the export action performed by an end-user. Inherited from CustomExportBaseEventArgs.
ExportMode Gets the document export mode. Inherited from CustomExportBaseEventArgs.
ImageExportOptions Gets export options related to exporting a dashboard/dashboard item as an image. Inherited from CustomExportBaseEventArgs.
ImageOptions Obsolete. Gets export options related to exporting a dashboard/dashboard item as an image. Inherited from CustomExportBaseEventArgs.
ItemComponentName Gets the component name of the exported dashboard item. Inherited from CustomExportBaseEventArgs.
PdfExportOptions Gets export options related to exporting a dashboard/dashboard item to PDF format. Inherited from CustomExportBaseEventArgs.
PdfOptions Obsolete. Gets export options related to exporting a dashboard/dashboard item to PDF format. Inherited from CustomExportBaseEventArgs.
PrintableComponents Obsolete. Provides access to a dictionary containing dashboard item names and related PrintableComponents. For internal use.
PrintPreviewOptions Gets options related to printing a dashboard/dashboard item using the Print Preview window. Inherited from CustomExportBaseEventArgs.
Report Gets the underlying report of the exported document.

The event data class exposes the following methods:

Method Description
GetChartContext(String) Returns chart context for the specified Chart dashboard item.
GetGaugeContext(String) Returns gauge export context for the specified Gauge dashboard item.
GetItemData(String) Returns multidimensional data for the specified dashboard item.
GetPrintableControl(String) Gets a printable control corresponding to the specified dashboard item.
GetPrintableControls() Gets printable controls corresponding to the exported dashboard items.


The Dashboard Viewer raises the CustomExport event in the following cases:

  • When you invoke the Print Preview dialog or change the previewed document’s settings (margins, orientation).

  • Before the exported document is saved to PDF and as Image formats.

The event allows you to customize the exported document.

The following table illustrates dashboard items and their corresponding printable XRControls:

Dashboard Item XRControl
ChartDashboardItem XRChart
ScatterChartDashboardItem XRChart
PieDashboardItem XRChart
RangeFilterDashboardItem (When CustomExportBaseEventArgs.ExportMode is SingleItem) XRChart
GaugeDashboardItem XRGaugeDashboardItem
TextBoxDashboardItem XRTextBox


How to Customize Dashboard Items in the Exported Document

The following example shows how to customize dashboard items in the exported document when you handle the DashboardDesigner.CustomExport / DashboardViewer.CustomExport / DashboardControl.CustomExport events. You can use the CustomExportEventArgs.GetPrintableControls method to obtain the printable controls.


using DevExpress.DashboardCommon;
using DevExpress.DashboardExport;
using DevExpress.DashboardWin;
using DevExpress.XtraCharts;
using DevExpress.XtraGauges.Core.Drawing;
using DevExpress.XtraGauges.Win.Base;
using DevExpress.XtraGauges.Win.Gauges.Circular;
using DevExpress.XtraReports.UI;

private void DashboardControl_CustomExport(object sender, CustomExportEventArgs e) {
    foreach(var printControl in e.GetPrintableControls()) {
        if(printControl.Value is XRGaugeDashboardItem) {
            var gaugeItemName = printControl.Key;
            DashboardViewer viewer = (DashboardViewer)sender;
            var gaugeDashboardItem = viewer.Dashboard.Items[gaugeItemName] as GaugeDashboardItem;
            foreach(var dashGaugeElement in gaugeDashboardItem.Gauges) {
                foreach(var gaugePanel in e.GetGaugeContext(gaugeItemName).GetPrintableGauges(dashGaugeElement).Cast<XRDashboardGauge>()) {
                    if(gaugePanel != null) {
                        gaugePanel.MainSeriesLabel.ForeColor = Color.Red;

        if(printControl.Value is XRChart) {
            var chartItemName = printControl.Key;
            DashboardViewer viewer = (DashboardViewer)sender;
            var chartDashboardItem = viewer.Dashboard.Items[chartItemName] as ChartDashboardItem;
            foreach(var pane in chartDashboardItem.Panes) {
                if(pane.Series.Count > 0) {
                    foreach(var dashSeries in pane.Series) {
                        if(dashSeries != null) {
                            var controlSeries = e.GetChartContext(chartItemName).GetControlSeries(dashSeries);
                            if(controlSeries != null) {
                                foreach(var ser in controlSeries) {
                                    LineSeriesView view = ser.View as LineSeriesView;
                                    if(view != null) {
                                        view.LineStyle.DashStyle = DashStyle.DashDot;

How to Add Custom Information to the Exported Dashboard at Runtime

The following example shows how to use the DashboardViewer.CustomExport event to specify header and footer content of an exported dashboard. This event allows you to access the underlying report (XtraReport) of the exported document.

Dashboard item print preview

View Example

using System.Windows.Forms;
using DevExpress.DashboardCommon;
using DevExpress.XtraPrinting;
using DevExpress.XtraReports.UI;

namespace WinViewer_CustomExport
    public partial class Form1 : Form
        public Form1()

        private void dashboardViewer1_CustomExport(object sender, CustomExportEventArgs e)

            XtraReport report = e.Report as XtraReport;
            PageHeaderBand headerBand = new PageHeaderBand();

            XRPictureBox icon = new XRPictureBox();
            icon.Image = Properties.Resources.dxLogo;
            icon.HeightF = 50;
            icon.WidthF = 300;

            XRLabel customHeader = new XRLabel();
            customHeader.Text = "TEST TEST TEST";
            customHeader.LeftF = 300;
            customHeader.WidthF = 300;

            XRPageInfo dateInfo = new XRPageInfo();
            dateInfo.PageInfo = PageInfo.DateTime;
            dateInfo.Format = "Created at {0:h:mm tt dd MMMM yyyy}";
            dateInfo.TopF = 50;
            dateInfo.WidthF = 200;

            PageFooterBand footerBand = new PageFooterBand();
            XRPageInfo pageInfo = new XRPageInfo();
            pageInfo.Format = "Page {0} of {1}";

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the CustomExport event.


The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.


See Also