Skip to main content
All docs
V24.2
.NET 8.0+

DevExpress v24.2 Update — Your Feedback Matters

Our What's New in v24.2 webpage includes product-specific surveys. Your response to our survey questions will help us measure product satisfaction for features released in this major update and help us refine our plans for our next major release.

Take the survey Not interested

ReportDataSourceHelperBase.BeforeShowPreview Event

Occurs when the ReportDataSourceHelper.SetupBeforePrint method is executed.

Namespace: DevExpress.ExpressApp.ReportsV2.Services

Assembly: DevExpress.ExpressApp.ReportsV2.v24.2.dll

#Declaration

public event EventHandler<BeforeShowPreviewEventArgs> BeforeShowPreview

#Event Data

The BeforeShowPreview event's data class is DevExpress.ExpressApp.ReportsV2.BeforeShowPreviewEventArgs.

#Remarks

Handle this event to modify the report content before it is displayed. For instance, you can merge two reports immediately before they are displayed. See the following topic for an example: How to: Merge the Pages of Two Reports.

#Implements

See Also