第3課：從報表伺服器載入報表定義

建立專案並從 RDL 架構產生類別之後，您就可以從報表伺服器載入報表定義。

載入報表定義

1. 在 ReportUpdater 類別的頂端新增一個私用欄位（如果您使用的是 Visual Basic，則是模組）以用於 Report 類別。 此欄位將用來在應用程式的存留期間，維護從報表伺服器載入報表的參考。

   private Report _report;  
   

   Private m_report As Report  
   

2. 將 Program.cs 檔案中 LoadReportDefinition() 方法的程式碼（Module1.vb for Visual Basic）替換為以下程式碼：

   private void LoadReportDefinition()  
   {  
       System.Console.WriteLine("Loading Report Definition");  
   
       string reportPath =   
           "/AdventureWorks 2012 Sample Reports/Company Sales 2012";  
   
       // Retrieve the report definition   
       // 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 2012 Sample Reports/Company Sales 2012"  
   
       'Retrieve the report definition   
       '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  
   

下一課

在下一課，您將撰寫程式代碼來更新從報表伺服器載入的報表定義。 請參閱 第 4 課：以程式設計方式更新報表定義。

另請參閱

使用從 RDL 架構產生的類別更新報表 （SSRS 教學課程）
報表定義語言 （SSRS）