Create Custom service using x++ in D365F&O.

 

Request class:

[DataContractAttribute]

class testRequestSimple
{
    private str dataAreaId,custId;
    [DataMember("DataAreaId")]

    public str parmDataAreaId(str _value = dataAreaId)
    {
       if(!prmIsDefault(_value))
        {  
          dataAreaId = _value;
        }
		return dataAreaId;
    }
 [DataMember("CustomerId")]
 public str parmCustId(str _custId = custId)
    {
       if(!prmIsDefault(_value))
        {
           custId =_custId;
        }
        return custId;
    }
}

Response class:

[DataContractAttribute]
class testResponse
{
    private boolean success;
    private str  errorMessage;
    private str  debugMessage;
[DataMember("ErrorMessage")]
 public str parmErrorMessage(str _value = errorMessage)
    {
        if (!prmIsDefault(_value)
        {
         errorMessage = _value;
        }
        return errorMessage;
    }
[DataMember("Success")]
 public Boolean parmSuccess(Boolean _value = success)
  {
       if (!prmIsDefault(_value))
        {
            success  = _value;
        }
        return success;
    }
[DataMember("DebugMessage")]
 public str parmDebugMessage(str _value = debugMessage)
    {
        if (!prmIsDefault(_value)
        {
       debugMessage = _value;
        }
        return debugMessage;
    }
}

Service class:

public class testCustomServicedataService
{
    public testResponse Customers(testRequestSimple_request)
    {
        var response = new TestResponse();
        changecompany(_request.parmDataAreaId())
        {
            try
            {
             // write the business logic here.
                response.parmDebugMessage("Hello World");
                response.parmSuccess(true);
            }
            catch (Exception::CLRError)
            {
                System.Exception interopException = CLRInterop::getLastException();
                response.parmSuccess(false);
                response.parmErrorMessage(interopException.ToString());
            }
            return response;
        }
    }
}

Create service group:

Create service:

Test the Service From Postman:

     https://<D365 URL>/api/services/TestCustomServiceGroup/TestCustomService/customers

 In this example the Postman body:

{
     "_request" :
   {
    "DataAreaId": "INMF",
   "CustomerId":"001"
    }
}