MVC 5中的System.Data.Entity.Core.ProviderIncompatibleexception

我在mvc5中创建一个ASP.NET Web应用程序，我用控制器创建了一个模型类。 我的应用程序正在运行，但是当我想在url中访问我的moviescontroller，如localhost：1234 / Movies时，它会在我的MoviesController.cs文件中生成exception

我正在使用的连接字符串是

生成此exception的函数是

 public ActionResult Index() { return View(db.Movies.ToList()); } 

编辑exception详细信息

EntityFramework.dll中发生了’System.Data.Entity.Core.ProviderIncompatibleException’类型的exception，但未在用户代码中处理

附加信息：从数据库获取提供程序信息时发生错误。 这可能是由entity framework使用不正确的连接字符串引起的。 检查内部exception以获取详细信息，并确保连接字符串正确。

内部exception详情：

  System.Data.Entity.Core.ProviderIncompatibleException was unhandled by user code HResult=-2146233087 Message=An error occurred while getting provider information from the database. This can be caused by Entity Framework using an incorrect connection string. Check the inner exceptions for details and ensure that the connection string is correct. Source=EntityFramework StackTrace: at System.Data.Entity.Utilities.DbProviderServicesExtensions.GetProviderManifestTokenChecked(DbProviderServices providerServices, DbConnection connection) at System.Data.Entity.Infrastructure.DefaultManifestTokenService.GetProviderManifestToken(DbConnection connection) at System.Data.Entity.Utilities.DbConnectionExtensions.GetProviderInfo(DbConnection connection, DbProviderManifest& providerManifest) at System.Data.Entity.DbModelBuilder.Build(DbConnection providerConnection) at System.Data.Entity.Internal.LazyInternalContext.CreateModel(LazyInternalContext internalContext) at System.Data.Entity.Internal.RetryLazy`2.GetValue(TInput input) 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.GetEnumerator() at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source) at MvcMovie.Controllers.MoviesController.Index() in d:\Nimit Joshi\Websites\MvcMovie\MvcMovie\Controllers\MoviesController.cs:line 20 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.Async.AsyncControllerActionInvoker.ActionInvocation.InvokeSynchronousActionMethod() at System.Web.Mvc.Async.AsyncControllerActionInvoker.b__36(IAsyncResult asyncResult, ActionInvocation innerInvokeState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End() at System.Web.Mvc.Async.AsyncResultWrapper.End[TResult](IAsyncResult asyncResult, Object tag) at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.b__3c() at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.c__DisplayClass45.b__3e() InnerException: System.Data.Entity.Core.ProviderIncompatibleException HResult=-2146233087 Message=The provider did not return a ProviderManifestToken string. Source=EntityFramework StackTrace: at System.Data.Entity.Core.Common.DbProviderServices.GetProviderManifestToken(DbConnection connection) at System.Data.Entity.Utilities.DbProviderServicesExtensions.GetProviderManifestTokenChecked(DbProviderServices providerServices, DbConnection connection) InnerException: System.Data.SqlClient.SqlException HResult=-2146232060 Message=A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 50 - Local Database Runtime error occurred. Cannot create an automatic instance. See the Windows Application event log for error details. ) Source=.Net SqlClient Data Provider ErrorCode=-2146232060 Class=20 LineNumber=0 Number=-1983577832 Server="" State=0 StackTrace: at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean withFailover) at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover) at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout) at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance) at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData) at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection) at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection) at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) at System.Data.SqlClient.SqlConnection.Open() at System.Data.Entity.SqlServer.SqlProviderServices.c__DisplayClass2c.b__2a() at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.c__DisplayClass1.b__0() at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 func) at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Action action) at System.Data.Entity.SqlServer.SqlProviderServices.UsingConnection(DbConnection sqlConnection, Action`1 act) at System.Data.Entity.SqlServer.SqlProviderServices.UsingMasterConnection(DbConnection sqlConnection, Action`1 act) at System.Data.Entity.SqlServer.SqlProviderServices.GetDbProviderManifestToken(DbConnection connection) at System.Data.Entity.Core.Common.DbProviderServices.GetProviderManifestToken(DbConnection connection) InnerException: 

我的DbContext类是：

 public class MovieDBContext : DbContext { public DbSet Movies { get; set; } } 

我的整个配置文件是：

Answer 1

请使用教程中提供的正确连接字符串：

您对用户sa身份validation可能存在问题。

//更新

我刚刚在DevVM上安装了VS 2013（Server 2008R2）我创建了一个Asp.Net MVC 5项目并使用nuget将Entity Framework添加到项目中。 在此之后我创建模型并将connectionstring添加到web.config然后我单击控件 – >添加 – >脚手架，选择模型数据上下文和名称，点击添加然后运行项目。 奇迹般有效。 所有CRUDfunction都有效。

Answer 2

我的LocalDB已被删除。 我重新创建它，我的项目现在正在成功运行。 谢谢大家支持我。

Answer 3

 > Here EmployeeDetail is a table name and Employee is a model name. And > ID,Branch,Salary and UID is a table field public ActionResult Index() { List employees = context.EmployeeDetails.ToList(); List emp = new List(); foreach(EmployeeDetail item in employees) { emp.Add(new Employee { ID=Convert.ToInt32(item.ID), Branch=item.Branch,`enter code here` Salary=Conve`enter code here`rt.ToInt32(item.Salary), UID = Convert.ToInt32(item.ID), }); } return View(emp); } > view page code 
 
Index
 
 @foreach (var emp in Model) { 
 @Html.ActionLink(emp.Branch, "Details", new { id = emp.ID }); 
 } 
  

Answer 4

不使用 ”。” 定义dbserver。 使用完整的机器名称

Answer 5

我相信这是由2个连接字符串引起的…有同样的问题并且摆脱了一个帮助。

Answer 6

请注意，您可能还有一些偏离应用程序拾取路径的user.config文件

C：\ Users \用户名\ AppData \本地\ PROJECTNAME_vs_Url_a2dblg5lbsfkc1adurpcald1inggdlg1 \