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[英]Register Generic Repository raise Error “The number of generic arguments provided doesn't equal the arity”
[英]Binding in Ninject - generic arguments provided doesn't equal the arity of the generic type definition?
試圖使用ninject將我的接口綁定到一個具體的類,但我必須遺漏一些東西並且無法使它工作。
System.ArgumentException was unhandled by user code
HResult=-2147024809
Message=The number of generic arguments provided doesn't equal the arity of the generic type definition.
Parameter name: instantiation
Source=mscorlib
ParamName=instantiation
StackTrace:
at System.RuntimeType.MakeGenericType(Type[] instantiation)
at Ninject.Activation.Providers.StandardProvider.GetImplementationType(Type service) in StandardProvider.cs:line 126
at Ninject.Activation.Providers.StandardProvider.Create(IContext context) in StandardProvider.cs:line 77
at Ninject.Activation.Context.Resolve() inContext.cs:line 157
at Ninject.KernelBase.<>c__DisplayClass10.<Resolve>b__c(IBinding binding) in KernelBase.cs:line 386
at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source)
at Ninject.Planning.Targets.Target`1.GetValue(Type service, IContext parent) in Target.cs:line 197
at Ninject.Planning.Targets.Target`1.ResolveWithin(IContext parent) inTarget.cs:line 165
at Ninject.Activation.Providers.StandardProvider.GetValue(IContext context, ITarget target) in StandardProvider.cs:line 114
at Ninject.Activation.Providers.StandardProvider.<>c__DisplayClass4.<Create>b__2(ITarget target) in StandardProvider.cs:line 96
at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at Ninject.Activation.Providers.StandardProvider.Create(IContext context) in StandardProvider.cs:line 96
at Ninject.Activation.Context.Resolve() inContext.cs:line 157
at Ninject.KernelBase.<>c__DisplayClass10.<Resolve>b__c(IBinding binding) in KernelBase.cs:line 386
at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source)
at Ninject.Planning.Targets.Target`1.GetValue(Type service, IContext parent) inTarget.cs:line 197
at Ninject.Planning.Targets.Target`1.ResolveWithin(IContext parent) inTarget.cs:line 165
at Ninject.Activation.Providers.StandardProvider.GetValue(IContext context, ITarget target) in StandardProvider.cs:line 114
at Ninject.Activation.Providers.StandardProvider.<>c__DisplayClass4.<Create>b__2(ITarget target) in StandardProvider.cs:line 96
at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at Ninject.Activation.Providers.StandardProvider.Create(IContext context) in StandardProvider.cs:line 96
at Ninject.Activation.Context.Resolve() inContext.cs:line 157
at Ninject.KernelBase.<>c__DisplayClass10.<Resolve>b__c(IBinding binding) in KernelBase.cs:line 386
at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source)
at PriceCheck.Api.Models.Ninject.NinjectScope.GetService(Type serviceType) in NinjectScope.cs:line 24
at System.Web.Http.Dispatcher.DefaultHttpControllerActivator.GetInstanceOrActivator(HttpRequestMessage request, Type controllerType, Func`1& activator)
at System.Web.Http.Dispatcher.DefaultHttpControllerActivator.Create(HttpRequestMessage request, HttpControllerDescriptor controllerDescriptor, Type controllerType)
InnerException:
在這里崩潰
public object GetService(Type serviceType)
{
IRequest request = resolutionRoot.CreateRequest(serviceType, null, new Parameter[0], true, true);
return resolutionRoot.Resolve(request).SingleOrDefault();
}
public interface IResponseResult
{
void AddError(string key, string errorMessage);
bool IsValid();
Dictionary<string, string> Errors { get; }
ResponseBase Status { get; set; }
}
public class ResponseResult<T> : IResponseResult
{
public ResponseResult()
{
Errors = new Dictionary<string, string>();
Status = new ResponseBase();
}
public void AddError(string key, string errorMessage)
{
if (!Errors.ContainsKey(key))
{
Errors.Add(key, errorMessage);
}
}
public bool IsValid()
{
if (Errors.Count > 0)
{
return false;
}
return true;
}
public Dictionary<string, string> Errors { get; private set; }
public T Response { get; set; }
public ResponseBase Status { get; set; }
}
Bind(typeof(IResponseResult)).To(typeof(ResponseResult<>));
你並沒有真正為服務提供“構造的通用類型”。
泛型 - 打開和關閉構造的類型
.NET中的“開放通用類型”究竟是什么?
Ninject里面實際上試圖制作一個 - 但是期望你沒有的generic arguments
。
Type.MakeGenericType(service.GetGenericArguments())
我不確定你有什么想法 - 以及如何解決這樣的問題。
您可以嘗試ToProvider
或設置提供商 - 但您仍然缺少某些東西。
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