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Dynamics 365 Community / Forums / Microsoft Dynamics CRM (Archived) / Could not load file or...
Microsoft Dynamics CRM (Archived)

Could not load file or assembly RestSharp Version=106.1.0.0

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Posted on by Akhil101 432

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.

RESTSHARP.png

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

*This post is locked for comments

  • imayur Profile Picture
    imayur 630 on at
    RE: Could not load file or assembly RestSharp Version=106.1.0.0

    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.

  • Akhil101 Profile Picture
    Akhil101 432 on at
    RE: Could not load file or assembly RestSharp Version=106.1.0.0

    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

  • Suggested answer
    imayur Profile Picture
    imayur 630 on at
    RE: Could not load file or assembly RestSharp Version=106.1.0.0

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

  • Verified answer
    Akhil101 Profile Picture
    Akhil101 432 on at
    RE: Could not load file or assembly RestSharp Version=106.1.0.0

    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

  • Emre GULCAN Profile Picture
    Emre GULCAN 2,379 on at
    RE: Could not load file or assembly RestSharp Version=106.1.0.0

    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.

  • Verified answer
    imayur Profile Picture
    imayur 630 on at
    RE: Could not load file or assembly RestSharp Version=106.1.0.0

    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?

  • Akhil101 Profile Picture
    Akhil101 432 on at
    RE: Could not load file or assembly RestSharp Version=106.1.0.0

    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.

    SendGrid2.png

    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

  • Suggested answer
    imayur Profile Picture
    imayur 630 on at
    RE: Could not load file or assembly RestSharp Version=106.1.0.0

    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

    1.  Add MSBuild.ILMerge.Task  nuget package from nuget package manager into your plugin project.
    2. In Solution Explorer->References right click on assembly references then click on properties, In properties set CopyLocal to false. 
    3. Repeat second step for all assembly references except the External Assemblies you want merge(In your case its RestSharp)
    4. Clean and Build Project (You will the message in output window displays which assemblies are merged togeter)
    5. Register your plugin again

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