报表查看器控件未显示来自SSRS的报表

我正在VS 2013中使用MS Report Viewer 10；该项目是从VS 2010升级的.我解决了与Report Viewer相关的一系列问题，并启动并运行了控件.我在SSRS中有很多报告，并且我已经确认报告本身可以正常工作.

I'm using MS Report Viewer 10 in VS 2013; the project is being upgraded from VS 2010. I have worked through a series of issues relating to Report Viewer, and have the control itself up and running. I have a number of reports in SSRS, and I have confirmed that the reports themselves work properly.

我有一个Web Forms ASPX页面用于数据输入.它将数据通过JSON传递到一个包含Report Viewer控件的ASPX弹出页面.

I have a Web Forms ASPX page for data input. It passes data via JSON to a popup ASPX page that contains the Report Viewer control.

我正在运行IIS Express 7，SQL Server 2008 R2(v10.50)和当前的.NET Framework 4.5目标框架.

I am running IIS Express 7, SQL Server 2008 R2 (v10.50), and a current target framework of .NET Framework 4.5.

Report Viewer不返回任何报告-没有错误消息，没有丢失数据的报告布局，当然也没有完整的报告.当我通过VS使用相同的输入运行相同的报告时，报告预览会显示我期望的结果.

Report Viewer does not return any report -- no error message, no report layout missing data, and certainly no complete report. When I run the same report with the same inputs through VS, the report preview shows the results I expect.

ProcessingMode 设置为 Remote ，并且 ReportServerCredentials 设置为 null .我研究了这意味着什么，这意味着Report Viewer应该使用当前网络凭据(即当前用户)连接到SSRS.我确认当前用户与我当前的登录名正确匹配；我可以使用Windows身份验证正确连接到SSRS和SQL Server.

ProcessingMode is set to Remote and ReportServerCredentials is null. I researched what this means, and it means that Report Viewer should connect to SSRS with the current network credentials, namely the current user. I confirmed that the current user correctly matches my current login; I can connect to SSRS and SQL Server using Windows authentication properly.

ReportViewer不在Web表单设计器中创建，因此我无法在设计时在其上设置任何属性.

ReportViewer doesn't create in the web form designer, so I can't set any properties on it at design time.

因此，我怀疑我的问题与运行时的身份验证有关.我对如何进行调查和解决这个问题没有主意.

So I suspect my issue is a matter of authentication at run time. I am out of ideas on how to investiagte and resolve this.

页面上的控制代码:

    <ssrs:ReportViewer ID="ReportViewer" runat="server" ProcessingMode="Remote" Width="100%"
        Height="690" ShowParameterPrompts="false" AsyncRendering="false"/>

在我尝试运行报告后，SSRS日志包含以下条目:

The SSRS log contains the following entries after I attempt to run the report:

library!ReportServer_0-3!1dc8!(datetime): i INFO: RenderForNewSession('(report)')
webserver!ReportServer_0-3!1dc8!(datetime, 1 second later): i INFO: Processed report. Report='(report)', Stream=''

旧项目使用MS Report Viewer9.它运行得很好.我在 web.config 中看到的唯一更改与更高版本以及从IIS 6到IIS 7的更改有关.

The legacy project used MS Report Viewer 9. It ran just fine. The only changes I see in web.config relate to the later version and a change from IIS 6 to IIS 7.

自从出现评论以来，这是来自web.config的相关行:

Since it came up in comments, here's the relevant line from web.config:

<system.webServer>
  <handlers>
    <add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
  </handlers>
</system.webServer>

我的报告查看器"窗口:

My Report Viewer window:

ETA 11月24日:我最终在应用程序日志中得到一个条目: HttpHandlerInputException，缺少URL参数:IterationId .此问题已在另一个STOF问题与解答中进行了讨论.

ETA 24 Nov: I eventually got an entry in the application log: HttpHandlerInputException, Missing URL parameter: IterationId. This issue has been discussed at another STOF Q&A.