我无法摆脱来自 Ninject 的异常“几个构造函数具有相同的优先级”
我有存储库
public interface IRepository<TEntity> where TEntity : class
{
List<TEntity> FetchAll();
IQueryable<TEntity> Query { get; }
void Add(TEntity entity);
void Delete(TEntity entity);
void Save();
}
public class Repository<T> : IRepository<T> where T : class
{
private readonly DataContext _db;
public Repository(DataContext db)
{
_db = db;
}
#region IRepository<T> Members
public IQueryable<T> Query
{
get { return _db.GetTable<T>(); }
}
public List<T> FetchAll()
{
return Query.ToList();
}
public void Add(T entity)
{
_db.GetTable<T>().InsertOnSubmit(entity);
}
public void Delete(T entity)
{
_db.GetTable<T>().DeleteOnSubmit(entity);
}
public void Save()
{
_db.SubmitChanges();
}
#endregion
}
我试图绑定存储库的控制器
public class AdminController : Controller
{
private readonly IRepository<Store> _storeRepository;
public AdminController(IRepository<Store> storeRepository)
{
_storeRepository = storeRepository;
}
}
Ninject 引导程序
private static void RegisterServices(IKernel kernel)
{
var connectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
kernel.Bind(typeof (DataContext)).ToMethod(context => new DataContext(connectionString));
kernel.Bind(typeof(IRepository<>)).To(typeof(Repository<>));
}
运行应用程序后出现错误
Error activating DataContext using implicit self-binding of DataContext
Several constructors have the same priority. Please specify the constructor using ToConstructor syntax or add an Inject attribute.
Constructors:
DataContext(string fileOrServerOrConnectionMappingSource mapping)
DataContext(IDbConnection connectionMappingSource mapping)
似乎 Ninject 试图绑定到 DataContext 类构造函数
namespace System.Data.Linq: IDisposable
{
public class DataContext : IDisposable
{
public DataContext(IDbConnection connection);
public DataContext(string fileOrServerOrConnection);
//skip code
}
但我想绑定到我的存储库构造函数
public class Repository<T> : IRepository<T> where T : class
{
private readonly DataContext _db;
public Repository(DataContext db)
{
_db = db;
}
//skip code
}
此外,如果我删除表单引导程序下方的行,我仍然会遇到相同的异常。当我尝试绑定存储库时,似乎 Ninject 会自动尝试绑定依赖项。
kernel.Bind(typeof (DataContext)).ToMethod(context => new DataContext(connectionString));