Report Viewer

Share your webconfig (after replacing information that is private and need not to be available to public)

Thanks Aditya

<?xml version="1.0"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  https://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <connectionStrings>
    <add name="SchoolDataConnectionString" connectionString="Data Source=WIN-GGQKG2961Q8\SCHOOLDATASQL;Initial Catalog=SchoolData;Integrated Security=True"
      providerName="System.Data.SqlClient" />
    <add name="SchoolDataConnectionString2" connectionString="Data Source=WIN-GGQKG2961Q8\SCHOOLDATASQL;Initial Catalog=SchoolData;Integrated Security=True"
      providerName="System.Data.SqlClient" />
  </connectionStrings>
  <system.web>
    <compilation debug="true" strict="false" explicit="true" targetFramework="4.7.2">
      <assemblies>
        <add assembly="Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="Microsoft.ReportViewer.Common, Version=10.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="Microsoft.Build.Framework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System.Management, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
      </assemblies>
    </compilation>
    <httpRuntime targetFramework="4.7.2"/>
  </system.web>
  <system.codedom>
    <compilers>
      <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:1659;1699;1701"/>
      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+"/>
    </compilers>
  </system.codedom>
</configuration>

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Check the version for 'Microsoft.ReportViewer.WebForms' and 'Microsoft.ReportViewer.Common'

Thanks Aditya

Did you upgrade your project?  If so, try installing a newer version of report builder (first uninstall the current version, rebuild and then install)

Hi Juan
VS2019 Error but VS2010 still works
I add removed Reportviewer and installed reportviewer 2015
It still shows 10.0.0.0 in the choose toolbox items what do I have to do to correct see insert





IF i click both reportviewer(s) I still get error
Thanks

try installing it in VS 2019 via NuGet Manager

Sorry to sound dumb but how do I do it I haven't used NuGet I downloaded 2015
I Tried

PM> Install-Package Microsoft.ReportViewer.2015 -Version 12.0.2.2403

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Error Default not found then

PM> Install-Package Microsoft.ReportViewer.2015 -Version 15.0.0.0

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The Report Viewer is install here

Go to Tools-> NuGet Package Manager->Manage Nuget Packages for Solution.

You can either look at installed click on the report viewer and then upgrade, or go to browse and search for it.  

btw: you're modifying the solution's version, not the globally installed version.

New to this

tried
Go to Tools-> NuGet Package Manager->Manage Nuget Packages for Solution got this message

What type of project do you have?

attach an image of the solution explorer

Hi Juan
Converting VB6 to Cloud base VB.net

I get a list of report viewer from 10.0 .40219.1 and 12.0.2402.15 have red cross for installed
I went into Go to Tools-> NuGet Package Manager->Manage Nuget Packages for Solution. not References

So, you've accepted a comment as a solution.  Is everything ok now?

I thought I submitted this must have not

Fixed uninstalled version 10 and installed 15
Thanks for you expert assistance

Again thanks for your expertise