Leçon 3 : chargement d'une définition de rapport à partir du serveur de rapports

Ajoutez un champ privé au début de la classe (ou du module en Visual Basic) ReportUpdater pour la classe Report. Ce champ sera utilisé pour conserver une référence au rapport chargé depuis le serveur de rapports pendant la vie de l'application.

private Report _report;

Private m_report As Report

Remplacez le code de la méthode LoadReportDefinition() du fichier Program.cs (Module1.vb en Visual Basic) par le code suivant :

private void LoadReportDefinition()
{
    System.Console.WriteLine("Loading Report Definition");

    string reportPath = 
        "/AdventureWorks 2008 Sample Reports/Company Sales 2008";

    // Retrieve the report defintion 
    // from the report server
    byte[] bytes = 
        _reportService.GetItemDefinition(reportPath);

    if (bytes != null)
    {
        XmlSerializer serializer = 
            new XmlSerializer(typeof(Report));

        // Load the report bytes into a memory stream
        using (MemoryStream stream = new MemoryStream(bytes))
        {
            // Deserialize the report stream to an 
            // instance of the Report class
            _report = (Report)serializer.Deserialize(stream);
        }
    }
}

Private Sub LoadReportDefinition()

    System.Console.WriteLine("Loading Report Definition")

    Dim reportPath As String = _
        "/AdventureWorks 2008 Sample Reports/Company Sales 2008"

    'Retrieve the report defintion 
    'from the report server
    Dim bytes As Byte() = _
        m_reportService.GetItemDefinition(reportPath)

    If Not (bytes Is Nothing) Then

        Dim serializer As XmlSerializer = _
            New XmlSerializer(GetType(Report))

        'Load the report bytes into a memory stream
        Using stream As MemoryStream = New MemoryStream(bytes)

            'Deserialize the report stream to an 
            'instance of the Report class
            m_report = CType(serializer.Deserialize(stream), _
                             Report)

        End Using

    End If

End Sub