App.Config C# Fuel SDK Initialisation

Question

I must be missing something, but I'm not sure what. I'm just trying to initialise the FuelSDK. I installed the package through NuGet, and I'm just doing some super basic code, but it fails on initialisation.

class Program {
    static void Main(string[] args) {
        var client = new ETClient();
    }
}

I get the following exception:

System.IO.FileNotFoundException has been thrown Could not load file or assembly 'System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. The system cannot find the file specified.

My App config looks like so:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <section name="fuelSDK" type="FuelSDK.FuelSDKConfigurationSection, FuelSDK" />
  </configSections>
  <fuelSDK 
    appSignature="blah"
    clientId="blah" 
    clientSecret="blah" 
    authEndPoint="https://blah.auth.marketingcloudapis.com" 
    soapEndPoint="https://blah.soap.marketingcloudapis.com" 
    restEndPoint="https://blah.rest.marketingcloudapis.com" />
</configuration>

---

EDIT Thanks to Jackson's helpful post, the original issue was due to being on a Mac. I added the following NuGet packages, and managed to get past that error:

• System.ServiceModel.Primitives
• System.ServiceModel.Http
• System.Configuration.ConfigurationManager

However, now I get the following problem:

System.Exception has been thrown clientId or clientSecret is null: Must be provided in config file or passed when instantiating ETClient.

There's clearly something I'm missing at the elementary level, what am I missing?

Answer 1

It appears to be an issue with the NuGet package and not FuelSDK: https://github.com/dotnet/standard/issues/575

Try using a stable version: 4.4.1