如何从dll获取.RDLC文件并将它们放到reportviewer控件中？

Question

我有两个项目如下：

首先：所有报告（rdlc文件）都在这里。

第二个： SharePoint 2010 解决方案，显示我的报告。

我使用以下代码访问dll中的 RDLC 文件，并将其放入第二个项目中 SharePoint应用页的reportviewer控件中：

Assembly assembly = Assembly.LoadFrom("ReportsLib.dll");
Stream stream = assembly.GetManifestResourceStream("ReportsLib.MyReport.rdlc");
reportViewer.LocalReport.LoadReportDefinition(stream);

如果我想从ReportsLib获取 rdlc 文件（例如：MyReport.rdlc）并将其放入SharePoint应用页面中的reportviewer控件中，则会出现以下错误：

[FileNotFoundException: Could not load file or assembly 'file:///c:\windows\system32\inetsrv\ReportsLib.dll' or one of its dependencies. The system cannot find the file specified.]
   System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +0
   System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +416
   System.Reflection.Assembly.LoadFrom(String assemblyFile) +52
   HRS.ReportsViewer.Layouts.ShowReport.Page_Load(Object sender, EventArgs e) +77
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +42
   System.Web.UI.Control.OnLoad(EventArgs e) +132
   Microsoft.SharePoint.WebControls.UnsecuredLayoutsPageBase.OnLoad(EventArgs e) +101
   Microsoft.SharePoint.WebControls.LayoutsPageBase.OnLoad(EventArgs e) +49
   System.Web.UI.Control.LoadRecursive() +66
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2428

我做错了什么？

Answer 1

程序集名称似乎是ReportsLib，假设您已使用默认名称空间，则需要进行如此调整：

var assembly = Assembly.LoadFrom("ReportsLib.dll");
var stream = assembly.GetManifestResourceStream("ReportsLib.MyReport.rdlc");
reportViewer.LocalReport.LoadReportDefinition(stream);

此外，如果您将MyReport.rdlc移到文件夹中，那么您还需要添加一个虚线文件夹路径，即

GetManifestResourceStream("ReportsLib.SomeFolder.MyReport.rdlc");

编辑如果程序集已经过GAC编辑，请尝试提供完全限定的程序集名称，例如

 var assembly = Assembly.LoadFrom("ReportsLib.dll, Version=1.0.0.0, Culture=neutral, PublicKeyToken=xxxxxxxxxxxxxx");

您可以使用以下方法之一获取FQN： How do I find the fully qualified name of an assembly?