问题
I get the following error in my reportviewer report when I upgraded from Visual Studio 2015 Community to Visual Studio 2017 Community.
Microsoft.Reporting.WinForms.LocalProcessingException: 'An error occurred during local report processing.'
Inner Exception DefinitionInvalidException: The definition of the report '' is invalid.
回答1:
Please verify that you have installed the following nuget packages.
For Winforms : https://www.nuget.org/packages/Microsoft.ReportingServices.ReportViewerControl.Winforms/140.340.80
For ASP.NET : https://www.nuget.org/packages/Microsoft.ReportingServices.ReportViewerControl.WebForms/140.340.80/
You might also need to install the Report Designer :
https://marketplace.visualstudio.com/items?itemName=SqlReportingServices.MicrosoftRdlcReportDesignerforVisualStudio-18001
If it does not work, click "continue" in Visual Studio debugger when you get the exception and go see on the Web page what are the error details.
回答2:
this error occurred for not installing correct packages. I have solved this problem by installing latest reportviewer control from this link
https://www.nuget.org/packages/Microsoft.ReportingServices.ReportViewerControl.WebForms/150.900.148
回答3:
For me, it was installed but I forgot this:
Hope it helps.
来源：https://stackoverflow.com/questions/43869364/definitioninvalidexception-the-definition-of-the-report-is-invalid