Report Viewer control not showing report from SSRS

问题

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.

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.

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

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

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.

The control code on the page:

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

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=''

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.

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>

My Report Viewer window:

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.

回答1:

As requested by @CodeswithHammer I'm adding this reference to another thread for just to save people some time searching for it.

https://stackoverflow.com/a/22000827/1807669

回答2:

Below is code snippet using which i am using to bind ReportViewer with SSRS report

ReportViewer1.ProcessingMode = Microsoft.Reporting.WebForms.ProcessingMode.Remote;
ReportViewer1.ServerReport.ReportServerCredentials = new ReportServerNetworkCredentials("ReportServerUsername", "ReportServerPassword", "");
ReportViewer1.ServerReport.ReportServerUrl = new Uri("http://mymachinename//ReportServer");
ReportViewer1.ServerReport.ReportPath = "/MyReports/TestReport1";

Here ReportServerUrl is path of SQL Report Server(SSRS) configured in my machine and in ReportPath "MyReports" is folder in SQL Report Server in which i have Report named TestReport1

回答3:

When you update version of the SSRS control in your app and web.config you also need to add a new handler for it in IIS. If you had one in your mappings previously remove it and add a new one.

Open IIS manager and select your application Under IIS section
Double click on Handler Mappings icon On the Action pane on your
Right click Add Managed Handler
When the dialog opens enter the following:

Request path: Reserved.ReportViewerWebControl.axd

Type: Microsoft.Reporting.WebForms.HttpHandler

Name: Reserved-ReportViewerWebControl-axd
Cick OK

Also makesure your server, credentials and path to your report are correct.

var serverReport = this.ReportViewer1.ServerReport;
serverReport.ReportServerCredentials = new ReportServerCredentials(userName, password, "yourDomain.com");
serverReport.ReportServerUrl = new Uri("your report server");
serverReport.ReportPath = "yourReportName";
serverReport.Refresh();

And in your aspx:

<%@ Register Assembly="Microsoft.ReportViewer.WebForms, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" Namespace="Microsoft.Reporting.WebForms" TagPrefix="rsweb" %>

来源：https://stackoverflow.com/questions/33419047/report-viewer-control-not-showing-report-from-ssrs

标签

ASP.NET

reporting-services

reportviewer