WCF和列表泛型<t>

Question

我正在创建一个WCF服务来运行对数据库的查询。

class ServiceManager : IServiceManager
{
    public IList<T> ExecuteDataReader<T>(ParametersEL parameters)
    {
        throw new NotImplementedException();
    }

    public int ExecuteNonQuery(ParametersEL parameters)
    {
        throw new NotImplementedException();
    }

    public object ExecuteScalar(ParametersEL parameters)
    {
        throw new NotImplementedException();
    }

    public bool Transaccion(List<string> querys, List<SqlParameterCollection> lstParams)
    {
        throw new NotImplementedException();
    }
}

但是当你运行该服务时会产生这个错误。

System.Runtime.Serialization.InvalidDataContractException: The type 'System.Collections.Generic.IList`1 [T]' can not be exported as type of scheme, because it is an open generic type. You can only export a generic type if all parameters are generic types of real rates.

这是WCF接口

[ServiceContract]
interface IServiceManager
{
    [OperationContract]
    IList<T> ExecuteDataReader<T>(ParametersEL parameters);

    [OperationContract]
    int ExecuteNonQuery(ParametersEL parameters);

    [OperationContract]
    object ExecuteScalar(ParametersEL parameters);

    [OperationContract]
    Boolean Transaccion(List<String> querys, List<SqlParameterCollection> lstParams);
}

请有人告诉我为什么会出现此错误以及如何更正或通过WCF传递此通用列表的某些解决方案。这个想法是任何实体使用此OperationContract

的通用