Inconsistent Accessibility

Question

I have taken a simple interface

public interface IBinaryHelper
{
    toBinary ConvertToBinary(string pathBinary);
}

I am trying access is in a class below it

public class ApiHelper : IBinaryHelper
{
    private readonly RestClient _client;

    public toBinary ConvertToBinary(string pathBinary)
    {
        toBinary binary = null;
        var request = new RestRequest("SampleAPI/ConvertToBinary/{pathBinary}", Method.GET) { RequestFormat = DataFormat.Json };
        request.AddParameter("pathBinary", pathBinary, ParameterType.UrlSegment);
        var response = _client.Execute<toBinary>(request);
        binary = response.Data;
        return binary;
    }
}

Now when build it, this is the error am getting an error Inconsisten accessibility:

Return type ApiHelper.toBinary is less accessible than method ApiHelper.ApiHelper.ConvertToBinary(string) at ConvertToBinary method both in interface and in the class

Answer 1

You are returning an object of type toBinary from a public method on a public class.

The toBinary class needs to be visible to all possible callers of the ApiHelper.ConvertToBinary method - therefore, it should be public as well.

Answer 2

As the error says, the inconsistency is not by calling that method, but toBinary is apparently a class that is not public . You cannot offer a method as public , if one cannot access the return type publicly.

Apparently your toBinary class / interface / struct /... is internal , private , inner class,... You should make this public as well.

Another hint: the names of classes start in general with an uppercase character. So it should be ToBinary not toBinary .