An error has occurred. Could not load file or assembly 'Telerik.Reporting.JsonSerialization, Version=17.0.23.118, in WEB REPORT DESIGNER

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Rendering Report Designer - Web
Lasitha
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Lasitha asked on 27 Feb 2023, 06:13 AM

I have tried to implement a web report designer server and i have successfully implemented using  nuget package.  Then i tried to use signed dll files to replace nuget package. I imported "Telerik.WebReportDesigner.Services.dll" and "Telerik.Reporting.Data.Schema.Provider.dll" two dll files and it gives the report designer, but reports are not loading. It keeps showing "An error has occurred. Could not load file or assembly 'Telerik.Reporting.JsonSerialization, Version=17.0.23.118, Culture=neutral, PublicKeyToken=a9d7983dfcc261be'. The system cannot find the file specified." error. What can be the reason for this. Do you have any solution?

 

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answered on 01 Mar 2023, 08:17 AM

Hello Lasitha,

The error indicates that the Telerik.Reporting.JsonSerialization assembly has not been referenced. You may find this assembly in the installation directory of the Telerik Reporting product, for example:

C:\Program Files (x86)\Progress\Telerik Reporting R1 2023\Bin\netstandard2.0

For more details on how to add the Web Report Designer to your project, please refer to the How to set up the Web Report Designer in .NET Core 3.1 and .NET 5+ applications - Telerik Reporting article.

Please test adding this assembly to your project and let me know if that resolves the problem.

Regards,
Dimitar
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