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();
10
11             FieldInfo printFieldInfo = reportViewerType.GetField("Print",
12                 BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.GetField);
13             CancelEventHandler printEvent = (CancelEventHandler)printFieldInfo.GetValue(reportViewer);
14             if (printEvent != null) { printEvent(reportViewer, null); }
15
16             Object createEMFDeviceInfo = reportViewerType.InvokeMember("CreateEMFDeviceInfo",
17                 BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.InvokeMethod, null,
18                 reportViewer, new object[] { 1, 1 });
19             Delegate createAndRegisterStream = Delegate.CreateDelegate(typeof(CreateAndRegisterStream),
20                 reportViewer, reportViewerType.GetMethod("CreateStreamEMFPrintOnly",
21                 BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.InvokeMethod));
22             Type internalRenderingCompleteDelegateType =
23                 reportViewerType.Assembly.GetType("Microsoft.Reporting.WinForms.InternalRenderingCompleteDelegate");
24             Delegate internalRenderingCompleteDelegate = Delegate.CreateDelegate(internalRenderingCompleteDelegateType,
25                 reportViewer, reportViewerType.GetMethod("OnRenderingCompletePrintOnly",
26                 BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.InvokeMethod));
27             Type postRenderArgsType = reportViewerType.Assembly.GetType("Microsoft.Reporting.WinForms.PostRenderArgs");
28             Object postRenderArgs = Activator.CreateInstance(postRenderArgsType, false, true);
29             Object report = reportViewerType.InvokeMember("Report", BindingFlags.NonPublic | BindingFlags.GetProperty |
30                 BindingFlags.Instance, null, reportViewer, null);
31             Object backgroundThread = reportViewerType.InvokeMember("BackgroundThread", BindingFlags.NonPublic |
32                 BindingFlags.GetProperty | BindingFlags.Instance, null, reportViewer, null);
33             backgroundThread.GetType().InvokeMember("BeginRender", BindingFlags.Public | BindingFlags.InvokeMethod |
34                 BindingFlags.Instance, null, backgroundThread, new object[] { "IMAGE", true, createEMFDeviceInfo,
35                     createAndRegisterStream, internalRenderingCompleteDelegate, postRenderArgs, report });
36
37             Type reportDocumentType = reportViewerType.Assembly.GetType("Microsoft.Reporting.WinForms.ReportPrintDocument");
38             Object currentReport = reportViewerType.InvokeMember("CurrentReport", BindingFlags.NonPublic |
39                 BindingFlags.GetProperty | BindingFlags.Instance, null, reportViewer, null);
40             Object fileManager = currentReport.GetType().InvokeMember("FileManager", BindingFlags.GetProperty, null,
41                 currentReport, null);
42             Object pageSettings = reportViewerType.InvokeMember("PageSettings", BindingFlags.NonPublic |
43                 BindingFlags.GetProperty | BindingFlags.Instance, null, reportViewer, null);
44             Object pageSettingsClone = ((ICloneable)pageSettings).Clone();
45             ConstructorInfo constructorInfo = reportDocumentType.GetConstructor(BindingFlags.NonPublic |
46                 BindingFlags.Instance, null, new Type[] { fileManager.GetType(), pageSettings.GetType() }, null);
47
48             PrintDocument document = (PrintDocument)constructorInfo.Invoke(new object[] { fileManager, pageSettingsClone });
49
50             document.DocumentName = (String)report.GetType().InvokeMember("DisplayNameForUse", BindingFlags.NonPublic |
51                 BindingFlags.GetProperty | BindingFlags.Instance, null, report, null);
52             document.PrinterSettings = (PrinterSettings)reportViewerType.InvokeMember("CreateDefaultPrintSettings",
53                 BindingFlags.NonPublic | BindingFlags.InvokeMethod | BindingFlags.Instance, null, reportViewer, null);
54             document.PrinterSettings.PrintRange = PrintRange.AllPages;
55             document.Print();
56         }
57     }