The type 'Microsoft.Reporting.WebForms.ReportViewer' exists in both

Question

I have a ASP.NET application which was referring Microsoft.ReportViewer.WebForms of version 9.0.0.0, I changed to refer to Microsoft.ReportViewer.WebForms of version 11.0.0.

Answer 1

My solution. I had old version of ReportViewer in _bin_deployableAssemblies folder. I deleted all from this, and use references from 'packages\Microsoft.ReportViewer.11.0.3366.16\lib' folder.

Answer 2

I tried adding dependentAssembly in web.config but that did not help.

<dependentAssembly>
  <assemblyIdentity name="Microsoft.ReportViewer.WebForms" publicKeyToken="89845dcd8080cc91" />
  <bindingRedirect oldVersion="8.0.0.0-10.0.0.0" newVersion="11.0.0.0" />
</dependentAssembly>

However it did not help as PublicKeyToken has changed in 11.0.0.0 dll.

Finally I was able to resolve the issue by adding qualifyAssembly node in web.config

<qualifyAssembly partialName="Microsoft.ReportViewer.WebForms" fullName="Microsoft.ReportViewer.WebForms,version=11.0.0.0,culture=neutral,publicKeyToken=89845dcd8080cc91" />