我下面的ASP.NET MVC 3音乐商店应用程序的教程,但我一直陷在第4部分: http://www.asp.net/mvc/tutorials/mvc-music-store-part-4 。 它不断告诉我,我没有安装SQL数据提供者的更多信息:
确切的错误:
System.ArgumentException was unhandled by user code
Message=Unable to find the requested .Net Framework Data Provider. It may not be installed.
Source=System.Data
StackTrace:
at System.Data.Common.DbProviderFactories.GetFactory(String providerInvariantName)
at System.Data.Entity.Internal.LazyInternalConnection.TryInitializeFromAppConfig(String name)
at System.Data.Entity.Internal.LazyInternalConnection.Initialize()
at System.Data.Entity.Internal.LazyInternalConnection.get_ConnectionHasModel()
at System.Data.Entity.Internal.LazyInternalContext.InitializeContext()
at System.Data.Entity.Internal.InternalContext.Initialize()
at System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType)
at System.Data.Entity.Internal.Linq.InternalSet`1.Initialize()
at System.Data.Entity.Internal.Linq.InternalSet`1.GetEnumerator()
at System.Data.Entity.Infrastructure.DbQuery`1.System.Collections.Generic.IEnumerable<TResult>.GetEnumerator()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at MusicApplication.Controllers.StoreController.Index() in C:\Users\Michelle\documents\visual studio 2010\Projects\MusicApplication\MusicApplication\Controllers\StoreController.cs:line 18
at lambda_method(Closure , ControllerBase , Object[] )
at System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters)
at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters)
at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation)
InnerException:
我已经添加了参考System.Data.SqlServerCe - 仍然有同样的错误。 任何指导意见将非常感激