WinReportServiceController.CustomShowDesignForm Event

Occurs before showing the Report Designer form.

Namespace: DevExpress.ExpressApp.ReportsV2.Win

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

NuGet Package: DevExpress.ExpressApp.ReportsV2.Win

Declaration

C#

public event EventHandler<CustomShowDesignFormEventArgs> CustomShowDesignForm

VB.NET

Public Event CustomShowDesignForm As EventHandler(Of CustomShowDesignFormEventArgs)

Event Data

The CustomShowDesignForm event's data class is DevExpress.ExpressApp.ReportsV2.Win.CustomShowDesignFormEventArgs.

Remarks

The CustomShowDesignForm event is raised when the ReportServiceController.ShowDesigner method shows the Report Designer form. Handle this event to implement the custom logic to be executed before showing the Report Designer. The following snippet illustrates how to perform customization of the DesignForm and Report objects - hide the Report Designer from the Windows taskbar and disable grid drawing.

C#

using DevExpress.ExpressApp.ReportsV2.Win;
// ...
public class CustomizeReportDesignerController : ViewController {
    private WinReportServiceController reportService;
    protected override void OnActivated() {
        base.OnActivated();
        reportService = Frame.GetController<WinReportServiceController>();
        if (reportService != null) 
            reportService.CustomShowDesignForm += reportService_CustomShowDesignForm;
    }
    void reportService_CustomShowDesignForm(object sender, CustomShowDesignFormEventArgs e) {
        ((System.Windows.Forms.Form)e.DesignForm).ShowInTaskbar = false;
        e.Report.DrawGrid = false;
    }
    protected override void OnDeactivated() {
        if (reportService != null)
            reportService.CustomShowDesignForm -= reportService_CustomShowDesignForm;
    }
}

VB.NET

Imports DevExpress.ExpressApp.ReportsV2.Win
' ...
Public Class CustomizeReportDesignerController
    Inherits ViewController
    Private reportService As WinReportServiceController
    Protected Overrides Sub OnActivated()
        MyBase.OnActivated()
        reportService = Frame.GetController(Of WinReportServiceController)()
        If reportService IsNot Nothing Then
            AddHandler reportService.CustomShowDesignForm, _
            AddressOf reportService_CustomShowDesignForm
        End If
    End Sub
    Private Sub reportService_CustomShowDesignForm( _
    ByVal sender As Object, ByVal e As CustomShowDesignFormEventArgs)
        CType(e.DesignForm, System.Windows.Forms.Form).ShowInTaskbar = False
        e.Report.DrawGrid = False
    End Sub
    Protected Overrides Sub OnDeactivated()
        If reportService IsNot Nothing Then
            RemoveHandler reportService.CustomShowDesignForm, _
            AddressOf reportService_CustomShowDesignForm
        End If
    End Sub
End Class

You can set the Handled parameter to true to suppress the default Report Designer.