How to set the current row/record in a FormView-Control

Question

Hello, I've used the Formview-Control first time now because i was hoping to benefit from its paging- and FormViewMode capabilities. What is the recommended way of setting the datasource and the current row/record? I have a Gridview on the Page and i want to change the Formview Data after the Grid's SelectedIndexChanged-Event occured, but every promising property of the FormView is ReadOnly. I thought this must be a common requirement but didnt find much about it. Also i cant see the Pager although i have defined it: AllowPaging="true" PagerSettings-Position="Top" PagerSettings-Mode="NextPreviousFirstLast".

What i have is:

    Private Sub GrdCharge_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles GrdCharge.SelectedIndexChanged
        Dim idCharge As String = DirectCast(GrdCharge.SelectedRow.FindControl("LblIdCharge"), Label).Text
        Me.FormView1.ChangeMode(FormViewMode.ReadOnly)
        BindFormView(FormViewMode.ReadOnly, idCharge)
        Me.UpdGrdCharge.Update()
    End Sub

    Private Sub BindFormView(ByVal mode As FormViewMode, ByVal strIdCharge As String)
        Dim updPanelId As String = String.Empty
        Select Case mode
            Case FormViewMode.Insert
                updPanelId = "UdpFormPanelAdd"
            Case FormViewMode.ReadOnly, FormViewMode.Edit
                Dim idCharge As Int32
                If GetString(strIdCharge).Length = 0 OrElse Not Int32.TryParse(strIdCharge, idCharge) Then
                    Throw New ArgumentException("BindFormView needs a valid idCharge as parameter when in ReadOnly or Edit-Mode!")
                Else
                    Dim drCharge As ERPModel.dsERP.ERP_ChargeRow = dsERP.ERP_Charge.FindByidCharge(idCharge) 'this is the current selected row
                    Me.FormView1.DataSource = dsERP.ERP_Charge 'this is a DataTable
                    'How to set the current Data Item shown in the FormView?? The following is all ReadOnly:
                    Me.FormView1.Row = drCharge 'Row is ReadOnly
                    Me.FormView1.SelectedValue = strIdCharge 'SelectedValue is ReadOnly
                    Me.FormView1.DataItem = drCharge 'DataItem is ReadOnly
                    Me.FormView1.DataBind()
                End If
                updPanelId = IIf(FormView1.CurrentMode = FormViewMode.ReadOnly, "UdpFormPanel", "UdpFormPanelEdit").ToString
        End Select

        Dim updPanel As UpdatePanel = DirectCast(FormView1.FindControl(updPanelId), UpdatePanel)
        updPanel.Update()
    End Sub

(C# Tag added because C#-sample code also welcome ;)) Regards

EDIT: I have changed the part in BindFormView to:

        Select Case mode
            Case FormViewMode.Insert

            Case FormViewMode.ReadOnly, FormViewMode.Edit
                Dim idCharge As Int32
                If GetString(strIdCharge).Length = 0 OrElse Not Int32.TryParse(strIdCharge, idCharge) Then
                    Throw New ArgumentException("BindFormView needs a valid idCharge as parameter when in ReadOnly or Edit-Mode!")
                Else
                    Me.FormView1.DataSource = dsERP.ERP_Charge.Select(dsERP.ERP_Charge.idChargeColumn.ColumnName & "=" & idCharge)
                End If
        End Select

        Me.FormView1.DataKeyNames = New String() {dsERP.ERP_Charge.idChargeColumn.ColumnName}
        Me.FormView1.DataBind()

That works for me. I still dont have a pager in FormView but i have achieved that the FormView Data changes according to the selectedindex in the GridView.

Thanks anyway.