保护级别而无法访问财产？

Question

这是错误显示的行：

public IOAuth2ServiceProvider<IElance> ElanceServiceProvider { get; set; }

它在该行的IElance类型上显示错误，但这是接口：

public interface IElance : IApiBinding
    {
        /// <summary>
        /// Search all jobs, list jobs associated with an employee or a freelancer, and retrieve information for a specific job.
        /// </summary>
        IJobOperations JobOperations { get; }

        /// <summary>
        /// Access all messages, users, messages, and Work View™ data associated with an Elance Workroom.
        /// </summary>
        IWorkRoomOperations WorkroomOperations { get; }

        /// <summary>
        /// View all of the information associated with an employee or a freelancer.
        /// </summary>
        IProfileOperations ProfileOperations { get; }

        /// <summary>
        /// View detailed information on freelancers, and retrieve a list of all freelancers employed by an employer.
        /// </summary>
        IFreelancerOperations FreelancerOperations { get; }

        /// <summary>
        /// List Elance groups, and retrieve lists of members and jobs belonging to a group.
        /// </summary>
        IGroupOperations GroupOperations { get; }

        /// <summary>
        /// Obtain ancillary Elance information, such as the current list of all job categories.
        /// </summary>
        IUtilityOperations UtilityOperations { get; }
    }

我无法为自己的一生弄清楚它为什么告诉我这一点。 我是否缺少明显的东西？ 我将不胜感激对此错误的任何指示。

Answer 1

这可能是由IApiBinding或其基本接口之一未public 。 另一种可能性是接口成员使用的一种类型不是公开的。