IPivotEvents.OnHeaderChange

Syntax

OnHeaderChange(Value: IDimInstance);

Parameters

Value. Data of the dimension linked related with table header change.

Description

The OnHeaderChange method implements the event that occurs on changing table header.

Example

Executing the example requires that the repository contains a form with the UiErAnalyzer component named UiErAnalyzer1, and the EaxDocumentViewerBox and ErAnalyzerDimPanel components. UiErAnalyzer1 is set as a data source for EaxDocumentViewerBox and ErAnalyzerDimPanel. A express report is connected to UiErAnalyzer1.

Add links to the Dimensions, Express, Pivot system assemblies.

Public Class Pivot_Events: PivotEvents
    // Event that occurs before header change
    Public Sub OnHeaderChange(Value: IDimInstance);
    Begin
        Debug.WriteLine("Header is changed. Used dimension: " + Value.Name + '(' + Value.Ident + ')');
    End Sub OnHeaderChange;
End Class Pivot_Events;

Class TESTForm: Form
    UiErAnalyzer1: UiErAnalyzer;
    EaxDocumentViewerBox1: EaxDocumentViewerBox;
    ErAnalyzerDimPanel1: ErAnalyzerDimPanel;
    Pvt: IPivot;
    Cookie: Integer;

    Sub TESTFormOnShow(Sender: Object; Args: IEventArgs);
    Var
        Express: IEaxAnalyzer;
        Events: Pivot_Events;
    Begin
        // Get express report
        Express := UiErAnalyzer1.ErAnalyzer;
        // Get settings for displaying report data table
        Pvt := Express.Pivot;
        // Allow event generation
        Pvt.EventsEnabled := True;
        // Create an class instance for event handling
        Events := New Pivot_Events.Create;
        // Connect table event handler
        Cookie := Pvt.AddEventHandler(Events);
    End Sub TESTFormOnShow;

    Sub TESTFormOnClose(Sender: Object; Args: IEventArgs);
    Begin
        // Remove event handler
        Pvt.RemoveEventHandler(Cookie);
    End Sub TESTFormOnClose;
End Class TESTForm;

When a form is started, a custom event handler is connected for express report table. If headers structure changes in the ErAnalyzerDimPanel component, the development environment console displays information about moved dimension.