Could not load file or assembly 'Newtonsoft.Json

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Posted on by bharrath

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Hi friends,

I have written code which consumes public API's like countries. When I pass country code it will returns country name, in console it is returning country but when i use the same code in plugin it is throwing exception "Could not load file or assembly 'Newtonsoft.Json ". I tried changing app.config and ILMerge too but no use. Please help me to solve this issue. I am unable to debug the plugin either because of this exception.

Thanks,

Bharath

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Temmy Wahyu Raharjo 2,916 on at

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Hi, you need to merge your plugin with 3rd party dll. I wrote a blog post about this.

temmyraharjo.wordpress.com/.../dynamic-crm-merge-assemblies

Hopefully can help you to merge the dll.

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LeoAlt 16,331 Moderator on at

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Hi partner,

You need to confirm that the version of "Newtonsoft.Json" you referenced should be the same as the on running in your environment.

Please refer to the following links.

1.How to reference assemblies from plug-ins

blogs.msdn.microsoft.com/.../how-to-reference-assemblies-from-plug-ins

2.Same resolved issue

community.dynamics.com/.../292180

Hope it helps.

Best Regards

Leo

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Ben Thompson 6,350 on at

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You really shouldn't be using ILMerge www.develop1.net/.../ILMergeNotSupported shows why and also provides you with replacement standard .Net 4.0 code that will perform the same functionality that you are using Newtonsoft for...

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jmurphy 5 on at

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Its silly that its 2020 and Microsoft hasn't included this assembly with the core product. Especially since almost every other azure cloud offering has this package readily available (example: Azure API Management).

The "supported" approach of using DataContractJsonSerializer is riddled with bugs and limitations:

- Dates serialize to non-standards format unless you include a format class

- ANSI characters fail to serialize properly

- The inability to serialize and de-serialize loosely defined JSON object schemas without known types (which is a necessity for Azure Cognitive Services)

I would do yourself a favor and:

- Get the nuget packages MSBuild.ILMerge.Task, and Newtonsoft

- Set the "Copy Local" property for CRM classes to "False" (Microsoft.Crm.Sdk.Proxy, Microsoft.Xrm.Sdk, Microsoft.Xrm.Sdk.Workflow)

- Set the "Copy Local" property for Newtonsoft to "True"

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