CODEWITHSUNDEEP
vb.netdevexpressdevexpress-windows-ui
Chris
Chris

Reputation: 159

Bind DataSource to new DevExpress Report Designer?

I'm trying to figure out how to set my DataSource as the default when a user clicks New Report, or for any new report, in the DevExpress User Data Report Designer.

Right now, the Blank Report I have load on Form_Load has my DataSources just fine, but anytime I hit New Report, they're gone.

I've googled and followed the docs, but they all seem to be geared towards opening a specific report (as above).

Can anyone help?

Upvotes: 0

Views: 1271

Answers (1)

nempoBu4
nempoBu4

Reputation: 6631

0. ICommandHandler interface

You need to handle the ReportCommand.NewReport command by implementing the ICommandHandler interface. You must pass an object that implementing this interface to the XRDesignMdiController.AddCommandHandler method. You can get XRDesignMdiController object from ReportDesignTool.DesignForm.DesignMdiController property or from ReportDesignTool.DesignRibbonForm.DesignMdiController property according to what type of form you want to use.
Here is example:

Private Sub ShowReportDesigner()
    Dim tool As New ReportDesignTool(CreateReport)
    Dim controller = tool.DesignRibbonForm.DesignMdiController

    Dim handler As New NewCommandHandler(controller, AddressOf CreateReport)

    controller.AddCommandHandler(handler)

    tool.ShowRibbonDesigner()
End Sub

Private Function CreateReport() As XtraReport

    Dim report As New XtraReport
    report.DataSource = YourDataSourceObjectHere

    Return report

End Function

Public Class NewCommandHandler
    Implements ICommandHandler

    Private ReadOnly _controller As XRDesignMdiController
    Private ReadOnly _createReport As Func(Of XtraReport)

    Public Sub New(controller As XRDesignMdiController, createReport As Func(Of XtraReport))
        _controller = controller
        _createReport = createReport
    End Sub

    Public Function CanHandleCommand(command As ReportCommand, ByRef useNextHandler As Boolean) As Boolean Implements ICommandHandler.CanHandleCommand
        useNextHandler = command <> ReportCommand.NewReport
        Return Not useNextHandler
    End Function

    Public Sub HandleCommand(command As ReportCommand, args() As Object) Implements ICommandHandler.HandleCommand
        _controller.OpenReport(_createReport())
    End Sub
End Class

1. DesignPanelLoaded event

The another way is to subscribe to XRDesignMdiController.DesignPanelLoaded event. In this event you can check where the DataSource of report in loaded panel is empty and set it to your data source.
Here is example:

Private Sub ShowReportDesigner()
    Dim report As New XtraReport
    report.DataSource = YourDataSourceObjectHere

    Dim tool As New ReportDesignTool(New XtraReport)
    Dim controller = tool.DesignRibbonForm.DesignMdiController

    AddHandler controller.DesignPanelLoaded, AddressOf mdiController_DesignPanelLoaded

    tool.ShowRibbonDesigner()
End Sub

Private Sub mdiController_DesignPanelLoaded(ByVal sender As Object, ByVal e As DesignerLoadedEventArgs)
    Dim panel = DirectCast(sender, XRDesignPanel)
    Dim report = panel.Report

    If IsNothing(report.DataSource) Then
        report.DataSource = YourDataSourceObjectHere
    End If
End Sub

Upvotes: 1

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