SQL Server Express “'system.data.entity.internal.appconfig' 的类型初始化程序引发异常”错误

Question

I tried to connect my C# app to SQL Server 2008 Express using a connection string but after running my app, I get this error:

The type initializer for 'system.data.entity.internal.appconfig' threw an exception

I put Bourse_DB_log.ldf and Bourse_DB.mdf into the app directory and edit config file like below:

<configuration>
    <connectionStrings>
        <add name="Bourse_DBEntities" 
             connectionString="metadata=res://*/Model.BourseModel.csdl|res://*/Model.BourseModel.ssdl|res://*/Model.BourseModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=.\SQLEXPRESS_INS; Password=1234; User Instance=True;AttachDBFilename=|DataDirectory|\Bourse_DB.MDF;Integrated Security=True;MultipleActiveResultSets=True&quot;” 
             providerName="System.Data.EntityClient" />
    </connectionStrings>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
    </startup>
</configuration>

I looked for this error and found some solutions, but don't work for me.

NOTE: I detached my database from SQL Server Management Studio.

This is detail of error:

 See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box. ************** Exception Text ************** System.Data.Entity.Core.EntityException: The underlying provider failed on Open. ---> System.Data.SqlClient.SqlException: Login failed for user 'DESKTOP-XXXXXXX\Behdad'. at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, DbConnectionPool pool, String accessToken, Boolean applyTransientFaultHandling, SqlAuthenticationProviderManager sqlAuthProviderManager) 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.Infrastructure.Interception.DbConnectionDispatcher.<Open>b__36(DbConnection t, DbConnectionInterceptionContext c) at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget,TInterceptionContext](TTarget target, Action`2 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed) at System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.Open(DbConnection connection, DbInterceptionContext interceptionContext) at System.Data.Entity.Core.EntityClient.EntityConnection.<Open>b__2() at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.<>c__DisplayClass1.<Execute>b__0() at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation) at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Action operation) at System.Data.Entity.Core.EntityClient.EntityConnection.Open() --- End of inner exception stack trace --- at System.Data.Entity.Core.EntityClient.EntityConnection.Open() at System.Data.Entity.Core.Objects.ObjectContext.EnsureConnection(Boolean shouldMonitorTransactions) at System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess) at System.Data.Entity.Core.Objects.ObjectQuery`1.<>c__DisplayClass7.<GetResults>b__5() at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation) at System.Data.Entity.Core.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) at System.Data.Entity.Core.Objects.ObjectQuery`1.<System.Collections.Generic.IEnumerable<T>.GetEnumerator>b__0() at System.Data.Entity.Internal.LazyEnumerator`1.MoveNext() at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source) at System.Data.Entity.Core.Objects.ELinq.ObjectQueryProvider.<GetElementFunction>b__3[TResult](IEnumerable`1 sequence) at System.Data.Entity.Core.Objects.ELinq.ObjectQueryProvider.ExecuteSingle[TResult](IEnumerable`1 query, Expression queryRoot) at System.Data.Entity.Core.Objects.ELinq.ObjectQueryProvider.System.Linq.IQueryProvider.Execute[TResult](Expression expression) at System.Data.Entity.Internal.Linq.DbQueryProvider.Execute[TResult](Expression expression) at System.Linq.Queryable.Count[TSource](IQueryable`1 source) at Bourse.DataLayer.Services.PasswordRepositoryImpelement.CheckTableIsEmpty() in C:\Users\Behdad\source\repos\BourceManager\Bourse.DataLayer\Services\PasswordRepositoryImpelement.cs:line 23 at Bourse.App.MainForm.MainForm_Load(Object sender, EventArgs e) at System.Windows.Forms.Form.OnLoad(EventArgs e) at System.Windows.Forms.Form.OnCreateControl() at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible) at System.Windows.Forms.Control.CreateControl() at System.Windows.Forms.Control.WmShowWindow(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ScrollableControl.WndProc(Message& m) at System.Windows.Forms.Form.WmShowWindow(Message& m) at System.Windows.Forms.Form.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) ************** Loaded Assemblies ************** mscorlib Assembly Version: 4.0.0.0 Win32 Version: 4.8.4180.0 built by: NET48REL1LAST_B CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll ---------------------------------------- Bourse.App Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: file:///C:/Users/Behdad/Desktop/Bourse/Bourse.App.exe ---------------------------------------- System.Windows.Forms Assembly Version: 4.0.0.0 Win32 Version: 4.8.4150.0 built by: NET48REL1LAST_C CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll ---------------------------------------- System Assembly Version: 4.0.0.0 Win32 Version: 4.8.4001.0 built by: NET48REL1LAST_C CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll ---------------------------------------- System.Drawing Assembly Version: 4.0.0.0 Win32 Version: 4.8.3752.0 built by: NET48REL1 CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll ---------------------------------------- System.Configuration Assembly Version: 4.0.0.0 Win32 Version: 4.8.3752.0 built by: NET48REL1 CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll ---------------------------------------- System.Core Assembly Version: 4.0.0.0 Win32 Version: 4.8.4180.0 built by: NET48REL1LAST_B CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll ---------------------------------------- System.Xml Assembly Version: 4.0.0.0 Win32 Version: 4.8.3752.0 built by: NET48REL1 CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll ---------------------------------------- Bourse.DataLayer Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: file:///C:/Users/Behdad/Desktop/Bourse/Bourse.DataLayer.DLL ---------------------------------------- EntityFramework Assembly Version: 6.0.0.0 Win32 Version: 6.2.61023.0 CodeBase: file:///C:/Users/Behdad/Desktop/Bourse/EntityFramework.DLL ---------------------------------------- System.Data Assembly Version: 4.0.0.0 Win32 Version: 4.8.4121.0 built by: NET48REL1LAST_C CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_32/System.Data/v4.0_4.0.0.0__b77a5c561934e089/System.Data.dll ---------------------------------------- EntityFramework.SqlServer Assembly Version: 6.0.0.0 Win32 Version: 6.2.61023.0 CodeBase: file:///C:/Users/Behdad/Desktop/Bourse/EntityFramework.SqlServer.DLL ---------------------------------------- Anonymously Hosted DynamicMethods Assembly Assembly Version: 0.0.0.0 Win32 Version: 4.8.4180.0 built by: NET48REL1LAST_B CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_32/mscorlib/v4.0_4.0.0.0__b77a5c561934e089/mscorlib.dll ---------------------------------------- System.Numerics Assembly Version: 4.0.0.0 Win32 Version: 4.8.3752.0 built by: NET48REL1 CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Numerics/v4.0_4.0.0.0__b77a5c561934e089/System.Numerics.dll ---------------------------------------- System.Data.OracleClient Assembly Version: 4.0.0.0 Win32 Version: 4.8.3752.0 built by: NET48REL1 CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_32/System.Data.OracleClient/v4.0_4.0.0.0__b77a5c561934e089/System.Data.OracleClient.dll ---------------------------------------- System.Transactions Assembly Version: 4.0.0.0 Win32 Version: 4.8.3752.0 built by: NET48REL1 CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_32/System.Transactions/v4.0_4.0.0.0__b77a5c561934e089/System.Transactions.dll ---------------------------------------- BehComponents Assembly Version: 2.2.0.0 Win32 Version: 2.2.0.0 CodeBase: file:///C:/Users/Behdad/Desktop/Bourse/BehComponents.DLL ---------------------------------------- Bourse.Utilities Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: file:///C:/Users/Behdad/Desktop/Bourse/Bourse.Utilities.DLL ---------------------------------------- System.Xml.Linq Assembly Version: 4.0.0.0 Win32 Version: 4.8.3752.0 built by: NET48REL1 CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml.Linq/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.Linq.dll ---------------------------------------- System.EnterpriseServices Assembly Version: 4.0.0.0 Win32 Version: 4.8.3752.0 built by: NET48REL1 CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_32/System.EnterpriseServices/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.EnterpriseServices.dll ---------------------------------------- ************** JIT Debugging ************** To enable just-in-time (JIT) debugging, the.config file for this application or computer (machine.config) must have the jitDebugging value set in the system.windows.forms section. The application must also be compiled with debugging enabled. For example: <configuration> <system.windows.forms jitDebugging="true" /> </configuration> When JIT debugging is enabled, any unhandled exception will be sent to the JIT debugger registered on the computer rather than be handled by this dialog box.

Answer 1

After MultipleActiveResultSets="”try " instead of ” . If this does not help please provide complete error message.