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C#、ASP、.NET、Visual Studio、または Azure の経験はほとんどありません。Azure にデプロイしたときに正常に動作する Web アプリケーションがあります (このプロセスはまだ理解できません) が、Visual Studio 2012 で [デバッグ] -> [デバッグの開始] を実行すると、次のエラーが発生します。

System.Data.EntityException was unhandled by user code
  HResult=-2146233087
  Message=The underlying provider failed on Open.
  Source=System.Data.Entity
  StackTrace:
       at System.Data.EntityClient.EntityConnection.OpenStoreConnectionIf(Boolean openCondition, DbConnection storeConnectionToOpen, DbConnection originalConnection, String exceptionCode, String attemptedOperation, Boolean& closeStoreConnectionOnFailure)
       at System.Data.EntityClient.EntityConnection.Open()
       at System.Data.Objects.ObjectContext.EnsureConnection()
       at System.Data.Objects.ObjectContext.SaveChanges(SaveOptions options)
       at System.Data.Entity.Internal.InternalContext.SaveChanges()
       at System.Data.Entity.Internal.LazyInternalContext.SaveChanges()
       at System.Data.Entity.DbContext.SaveChanges()
       at Awesomeness.Core.BaseController.AddLog(String key, String message) in c:\Users\zack\Code\Awesomeness Reminders\AwesomenessWeb\AwesomenessWeb\Core\BaseController.cs:line 76
       at Awesomeness.Core.BaseController.OnActionExecuting(ActionExecutingContext filterContext) in c:\Users\zack\Code\Awesomeness Reminders\AwesomenessWeb\AwesomenessWeb\Core\BaseController.cs:line 26
       at System.Web.Mvc.Controller.System.Web.Mvc.IActionFilter.OnActionExecuting(ActionExecutingContext filterContext)
       at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation)
       at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass15.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14()
       at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters)
       at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
  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: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
       Source=.Net SqlClient Data Provider
       ErrorCode=-2146232060
       Class=20
       LineNumber=0
       Number=2
       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.EntityClient.EntityConnection.OpenStoreConnectionIf(Boolean openCondition, DbConnection storeConnectionToOpen, DbConnection originalConnection, String exceptionCode, String attemptedOperation, Boolean& closeStoreConnectionOnFailure)
       InnerException: System.ComponentModel.Win32Exception
            HResult=-2147467259
            Message=The system cannot find the file specified
            ErrorCode=-2147467259
            NativeErrorCode=2
            InnerException:

それを整理する方法に関するヒントと、基本的な背景を読むための提案をいただければ幸いです。

ありがとうございました。

編集：

Web.config の接続文字列は次のとおりです。

    <!-- local -->
    <add name="Entities" connectionString="metadata=res://*/Models.Awesomeness.csdl|res://*/Models.Awesomeness.ssdl|res://*/Models.Awesomeness.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=.;initial catalog=Awesomeness;integrated security=True;multipleactiveresultsets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />
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3 に答える 3

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私にとっては、Web 構成ファイルで、 からConnectionStringを削除しました

 integrated security=True;

そしてそれはそよ風のように働きました！

于 2014-04-23T00:12:42.333 に答える
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[ツール] > [データベースに接続] をクリックします。SQL Server データベースへの接続を試みます。できない場合は、接続文字列ではないことを意味します。このエラーが発生しました 

 "A network-related or instance-specific error occurred while establishing a connection to SQL Server."

したがって、そのエラーを検索できます。オンラインで多くのヘルプがあります。

Visual Studio でデータベースに接続できる場合は、データベースをクリックすると、プロパティ ウィンドウに接続文字列が表示されます。接続文字列をコピーしてアプリケーションに貼り付けると、それが正しいことがわかります。

于 2015-08-06T09:51:45.527 に答える