rdlc 套打实现

就是通过反射调用ReportViewer里的函数实现套打功能，在WinForm下测试并正在使用，WebForm下未经测试，不知可否使用。

 在使用套打前不能ReportViewer.SetDisplayMode，Set后会造成打印两份文件出来，原因不清楚。

 1 public static class ReportViewerExt
 2     {
 3         /// <summary>
 4         /// 用默认打印机直接打印。
 5         /// </summary>
 6         /// <param name="reportViewer"></param>
 7         public static void DirectPrint(this ReportViewer reportViewer)
 8         {
 9             Type reportViewerType = reportViewer.GetType();
 
             FieldInfo printFieldInfo = reportViewerType.GetField("Print", 
                 BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.GetField);
             CancelEventHandler printEvent = (CancelEventHandler)printFieldInfo.GetValue(reportViewer);
             if (printEvent != null) { printEvent(reportViewer, null); }
 
             Object createEMFDeviceInfo = reportViewerType.InvokeMember("CreateEMFDeviceInfo", 
                 BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.InvokeMethod, null, 
                 reportViewer, new object[] { 1, 1 });
             Delegate createAndRegisterStream = Delegate.CreateDelegate(typeof(CreateAndRegisterStream), 
                 reportViewer, reportViewerType.GetMethod("CreateStreamEMFPrintOnly", 
                 BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.InvokeMethod));
             Type internalRenderingCompleteDelegateType = 
                 reportViewerType.Assembly.GetType("Microsoft.Reporting.WinForms.InternalRenderingCompleteDelegate");
             Delegate internalRenderingCompleteDelegate = Delegate.CreateDelegate(internalRenderingCompleteDelegateType, 
                 reportViewer, reportViewerType.GetMethod("OnRenderingCompletePrintOnly", 
                 BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.InvokeMethod));
             Type postRenderArgsType = reportViewerType.Assembly.GetType("Microsoft.Reporting.WinForms.PostRenderArgs");
             Object postRenderArgs = Activator.CreateInstance(postRenderArgsType, false, true);
             Object report = reportViewerType.InvokeMember("Report", BindingFlags.NonPublic | BindingFlags.GetProperty | 
                 BindingFlags.Instance, null, reportViewer, null);
             Object backgroundThread = reportViewerType.InvokeMember("BackgroundThread", BindingFlags.NonPublic | 
                 BindingFlags.GetProperty | BindingFlags.Instance, null, reportViewer, null);
             backgroundThread.GetType().InvokeMember("BeginRender", BindingFlags.Public | BindingFlags.InvokeMethod | 
                 BindingFlags.Instance, null, backgroundThread, new object[] { "IMAGE", true, createEMFDeviceInfo, 
                     createAndRegisterStream, internalRenderingCompleteDelegate, postRenderArgs, report });
 
             Type reportDocumentType = reportViewerType.Assembly.GetType("Microsoft.Reporting.WinForms.ReportPrintDocument");
             Object currentReport = reportViewerType.InvokeMember("CurrentReport", BindingFlags.NonPublic | 
                 BindingFlags.GetProperty | BindingFlags.Instance, null, reportViewer, null);
             Object fileManager = currentReport.GetType().InvokeMember("FileManager", BindingFlags.GetProperty, null, 
                 currentReport, null);
             Object pageSettings = reportViewerType.InvokeMember("PageSettings", BindingFlags.NonPublic | 
                 BindingFlags.GetProperty | BindingFlags.Instance, null, reportViewer, null);
             Object pageSettingsClone = ((ICloneable)pageSettings).Clone();
             ConstructorInfo constructorInfo = reportDocumentType.GetConstructor(BindingFlags.NonPublic | 
                 BindingFlags.Instance, null, new Type[] { fileManager.GetType(), pageSettings.GetType() }, null);
 
             PrintDocument document = (PrintDocument)constructorInfo.Invoke(new object[] { fileManager, pageSettingsClone });
 
             document.DocumentName = (String)report.GetType().InvokeMember("DisplayNameForUse", BindingFlags.NonPublic | 
                 BindingFlags.GetProperty | BindingFlags.Instance, null, report, null);
             document.PrinterSettings = (PrinterSettings)reportViewerType.InvokeMember("CreateDefaultPrintSettings", 
                 BindingFlags.NonPublic | BindingFlags.InvokeMethod | BindingFlags.Instance, null, reportViewer, null);
             document.PrinterSettings.PrintRange = PrintRange.AllPages;
             document.Print();
         }
     }