Microsoft Dynamics CRM (Archived)

Could not load file or assembly RestSharp Version=106.1.0.0

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Posted on by Akhil101

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Hi all,

I am using RestSharp version 106.1.0.0 and .NET framework 4.6.1.

I wrote a plugin on create of contact which will fetch the email address of the contact and send an email using sendgrid. But when i created a contact in CRM it's showing the below error.

Below is the error log:

Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=9.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: Unexpected exception from plug-in (Execute): SendGrid_Integration.SendMail: System.IO.FileNotFoundException: Could not load file or assembly 'RestSharp, Version=106.1.0.0, Culture=neutral, PublicKeyToken=598062e77f915f75' or one of its dependencies. The system cannot find the file specified.Detail:
<OrganizationServiceFault xmlns:i="www.w3.org/.../XMLSchema-instance" xmlns="schemas.microsoft.com/.../Contracts">
<ActivityId>59c76ab5-5568-455d-a6ec-45b117cc39d1</ActivityId>
<ErrorCode>-2147220956</ErrorCode>
<ErrorDetails xmlns:d2p1="schemas.datacontract.org/.../System.Collections.Generic" />
<Message>Unexpected exception from plug-in (Execute): SendGrid_Integration.SendMail: System.IO.FileNotFoundException: Could not load file or assembly 'RestSharp, Version=106.1.0.0, Culture=neutral, PublicKeyToken=598062e77f915f75' or one of its dependencies. The system cannot find the file specified.</Message>
<Timestamp>2017-12-12T07:20:02.9579604Z</Timestamp>
<ExceptionRetriable>false</ExceptionRetriable>
<ExceptionSource i:nil="true" />
<InnerFault i:nil="true" />
<OriginalException i:nil="true" />
<TraceText>

[SendGrid Integration: SendGrid_Integration.SendMail]
[02411298-75de-e711-a94f-000d3af0392a: SendGrid_Integration.SendMail: Create of contact]

</TraceText>
</OrganizationServiceFault>

Can anyone tell me what exactly is the issue here??

Thanks in advance

AKHIL R

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imayur 630 on at

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Hi,

RestSharp is external assembly, plugin registration takes on one assembly at a time. If you are on CRM on Premise you can add RestSharp Assembly in GAC or you need to merge RestSharp assembly with your plugin assembly.

Note : Meging assembly is unsupported customization

Steps to merge assembly

Add MSBuild.ILMerge.Task nuget package from nuget package manager into your plugin project.

In Solution Explorer->References right click on assembly references then click on properties, In properties set CopyLocal to false.

Repeat second step for all assembly references except the External Assemblies you want merge(In your case its RestSharp)

Clean and Build Project (You will the message in output window displays which assemblies are merged togeter)

Register your plugin again

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Akhil101 432 on at

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Hi Mayur,

Thanks a lot for your response !

I tried your above steps to merge the dll and registered the plugin again but now when i tried creating a new contact I am getting another error.

Below is the error log:

Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=9.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: Unexpected exception from plug-in (Execute): SendGrid_Integration.SendMail: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.EnvironmentPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.Detail:
<OrganizationServiceFault xmlns:i="www.w3.org/.../XMLSchema-instance" xmlns="schemas.microsoft.com/.../Contracts">
<ActivityId>697a590a-c6cb-4f6e-9474-97a894c7f3c6</ActivityId>
<ErrorCode>-2147220956</ErrorCode>
<ErrorDetails xmlns:d2p1="schemas.datacontract.org/.../System.Collections.Generic" />
<Message>Unexpected exception from plug-in (Execute): SendGrid_Integration.SendMail: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.EnvironmentPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.</Message>
<Timestamp>2017-12-12T10:46:57.1511722Z</Timestamp>
<ExceptionRetriable>false</ExceptionRetriable>
<ExceptionSource i:nil="true" />
<InnerFault i:nil="true" />
<OriginalException i:nil="true" />
<TraceText>

[SendGrid Integration: SendGrid_Integration.SendMail]
[02411298-75de-e711-a94f-000d3af0392a: SendGrid_Integration.SendMail: Create of contact]

</TraceText>
</OrganizationServiceFault>

Appreciate your help here :)

Thanks in advance

AKHIL R

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imayur 630 on at

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I think merge is successful. This is another issue, Your plugin is might be running in sandbox mode. Don't run plugin in sand box mode, try it in None Isolation mode if you can.

If RestSharp causing this, you should use Json.Net(Newton.json) for rest instead of RestSharp.

Can you elaborate more, what exactly you are doing in this plugin?

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Emre GULCAN 2,379 on at

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Hi,

Did you add (copylocal = true) to all required referenced assemblies? Usually I set "false" only XrmSDK assembly, others always be true.

And one more advice, sometimes when you "clean your project" your bin files not deleted, please check and delete all files in your bin folder after clean process and rebuild your project again. after that there will be only 1 assembly.

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Akhil101 432 on at

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Thanks a lot Mayur :)

I think its related to Environment variable. I am actually storing Api Key in Environmental variable and trying to access it in my plugin.

var apiKey = Environment.GetEnvironmentVariable("SENDGRID_API_KEY");

Please suggest any other way to retrieve the environmental variable ?

Thanks a lot

AKHIL R

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imayur 630 on at

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you should use Secure Config or Unsecure Config to store api keys or credentials. Secure Config is more preferable.

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Akhil101 432 on at

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Thanks a lot for your response. Yes you're right.

But is it possible to use Environmental variable instead of Secure Config or Insecure Config?

Thanks in advance

AKHIL R

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imayur 630 on at

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Yes, Its the recommended approach to store credentials or pass parameters which needs to be configurable without touching code

Plugin mostly works in isolated environment, probably it does not have access to windows level environment variables.

Alternately you can set plugin Isolation Mode to "None" while registering it and try with Environment variables but its not recommended.

For Plugin its Secured and Unsecured Config and for Custom Activities you can use Input Parameters.

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