无法使用 visual studio 2019 加载文件或程序集“microsoft.reportviewer.winforms”

Question

I am using visual studio 2019 with .NET framework 4.7.2 for my WinForms project. I have a report form that works fine when I run the project from Visual Studio, but when I run the ".exe" file inside bin/debug/app.publish folder, I am getting below error:

Could not load file or assembly 'Microsoft.ReportViewer.WinForms, Version=15.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The system cannot find the file specified. File name: 'Microsoft.ReportViewer.WinForms, Version=15.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91'

In my project, I have tried

"Corrected.Microsoft.ReportingServices.ReportViewerControl.Winforms 150.1358.0"

as well as

"Microsoft.ReportingServices.ReportViewerControl.Winforms 150.1537.0"

Both packages installes the following dll inside my project:

Microsoft.ReportViewer.Common
Microsoft.ReportViewer.DataVisualization
Microsoft.ReportViewer.Design
Microsoft.ReportViewer.ProcessingObjectModel
Microsoft.ReportViewer.WinForms

I have tried many suggested solutions from Stack overflow and other resources but none of them solved may problem.

Answer 1

ok, it seems like there reference mismatch that nuget isn't cleaning up. It could be a package reference in the csproj file or app.config. You'll have to manually edit it out.

One workaround though is to take the dll you want, copy it into a lib folder outside of the build folder that gets cleaned and reference that dll. You can reference the dll in your new lib folder by right clicking your project and then going to add > project refence. Then you can browse to the correct one.