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Visual Studio 2019 does not show report viewer as reference or in toolbox although it is installed.

I am using visual studio 2019; ASP.Net and VB.Net. I am trying to open an older project (Web Site) that was developed on an earlier version of Visual Studio (2010). I have several projects on this and they work. However, I am trying to use this older version project in this VS 2019 environment and it contains Report Viewer.

Although the Report Viewer has been installed I cannot see the reference for it and I can't see it in the Toolbox nor is it available I the choose items list.

When loading the old folder into the vs environment I get errors - Could not load file and assembly 'Microsoft.ReportViewer.WebForms, Version:15.0.0....

How can I get this to work. Below is my web config code snippet and you can see the report viewer is installed.

<system.webServer>
    <validation validateIntegratedModeConfiguration="false" />
    <handlers>
      <add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=15.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
    </handlers>
  
    <httpHandlers>
      
      <add verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=15.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
    </httpHandlers>
    <compilation debug="true" strict="false" explicit="true" targetFramework="4.0">
      <assemblies>
        <add assembly="Microsoft.ReportViewer.WebForms, Version=15.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
        <add assembly="Microsoft.ReportViewer.Common, Version=15.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
        </assemblies>
      <buildProviders>
        <add extension=".rdlc" type="Microsoft.Reporting.RdlBuildProvider, Microsoft.ReportViewer.WebForms, Version=15.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
      </buildProviders>
    </compilation>

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Capture-ReportViewerDownload.PNG

Scott McDaniel (EE MVE )

You should be able to install it through NuGet. See this post:

https://developercommunity.visualstudio.com/content/problem/617307/the-current-version-of-reportviewer-control-does-n.html?childToView=620820#comment-620820

rckrch

ASKER

It is already installed and works on another project. Just not on this one.

rckrch

ASKER

Thanks Scott for your comment.

If I uninstall it will that impact the project in which it is working already? As I mentioned, it works on one of my solutions, but not on another.

I am thoroughly confused about how this is supposed to work.

Scott McDaniel (EE MVE )

I would, but you could reinstall it.

Your older project may also contain references to an older version. If so, you'd have to update those references in the old project to the new reference numbers.

rckrch

ASKER

I am not sure how to do that. Can you help me with this? I have tried and it did not work - so I am obviously doing something wrong.

Scott McDaniel (EE MVE )

Open the project, and then open the My Project Window, then click References. Do you see anything that is marked as <missing>, or anything like that?

Better yet, take a screenshot of your References and post them here.

rckrch

ASKER

I don't have a My Project Window.

rckrch

ASKER

I don't have anything that says something in missing in the references. Don't know if I am looking at the correct list.

Scott McDaniel (EE MVE )

I'm referring to this screen:

If one is missing, it'll not show the Path

rckrch

ASKER

At the risk of sounding like an idiot, I have not idea what this screen is or how to get there.

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Scott McDaniel (EE MVE )

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rckrch

ASKER

Thanks Scott. I don't have a 'MyProject' in solution explorer. I did resolve the problem last night however. I simply copied the reference files from the repos folder from the project that was working to the project that was not working and changed the PublicKeyToken.

The web site works now. If or when I have further problem I will post another question.

Thanks for the help. I will select your last as the answer.