ApiOperationBase<ANetApiRequest, ANetApiResponse>.RunEnvironment = AuthorizeNet.Environment.SANDBOX;
This line from the sample code gives the error:
ANetApiRequest is an ambiguous reference between 'AuthorizeNet.ApiCore.ANetApiRequest' and 'AuthorizeNet.Api.Contracts.V1.ANetApiRequest'
If I try to fully qualify the reference, it says 'ApiCore' namespace not found and 'Api' reference not found, respectively.