I'm having a weird issue that I can't figure out. I'm trying to write some integration tests around some database code and my unit tests fail with a weird exception. Running the code normally under a console application work just fine.
public static class DatabaseManager
{
public static VerifyServceConnectionResult VerifyServerConnection(Server server)
{
try
{
using (var conn = new SqlConnection(BuildConnectionString(server)))
{
conn.Open();
}
return new VerifyServceConnectionResult { ConnectionSuccessful = true };
}
catch (SqlException ex)
{
return new VerifyServceConnectionResult
{
ConnectionSuccessful = false,
ErrorMessage = ex.Message
};
}
catch (Exception ex)
{
return new VerifyServceConnectionResult
{
ConnectionSuccessful = false,
ErrorMessage = "General Exception: " + ex.Message
};
}
}
private static string BuildConnectionString(Server server)
{
var builder = new SqlConnectionStringBuilder();
builder.DataSource = server.DataSource;
builder.IntegratedSecurity = server.UseIntegratedSecurity;
return builder.ConnectionString;
}
}
as soon as conn.open gets called within the Nunit Test I get an exception "Arithmetic operation resulted in an overflow." Any ideas on why such a simple test would be failing in nunit with such a weird error. Again, the code works just fine outside of the context of the unit test.
Thanks
edit: adding stack trace
at SNIOpenSyncExWrapper(SNI_CLIENT_CONSUMER_INFO* , SNI_ConnWrapper** )
at SNINativeMethodWrapper.SNIOpenSyncEx(ConsumerInfo consumerInfo, String constring, IntPtr& pConn, Byte[] spnBuffer, Byte[] instanceName, Boolean fOverrideCache, Boolean fSync, Int32 timeout, Boolean fParallel)
at System.Data.SqlClient.SNIHandle..ctor(ConsumerInfo myInfo, String serverName, Byte[] spnBuffer, Boolean ignoreSniOpenTimeout, Int32 timeout, Byte[]& instanceName, Boolean flushCache, Boolean fSync, Boolean fParallel)
at System.Data.SqlClient.TdsParserStateObject.CreatePhysicalSNIHandle(String serverName, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Byte[]& instanceName, Byte[] spnBuffer, Boolean flushCache, Boolean async, Boolean fParallel)
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 xxx.Database.DatabaseManager.VerifyServerConnection(Server server) in d:\projects\TFS\xxx.visualstudio.com\SnydJK.DatabaseUtility\Database\DatabaseManager.cs:line 17
Recently, I experienced an exception with the same call stack.
Enviroment
I was using LocalDB server on Windows 8.1 64-bit (not in domain) with default UAC settings and the user is local admin, Framework v4.0.2 (see why it's important).
Sadly, the issue can't be reproduced on other computers with the same enviroment.
Issue description
Found out that the exception occurs in the following conditions:
There is Integrated Security parameter in the connection string which is used to create a new database.
The same process opens a connection to the newly created DB after it got created.
Breaking one of these two conditions allows to get through without exceptions. So omitting the Integrated Security is the easiest way to go. As an option - don't open connection to the newly created DB in the same process. But just adding a pause after creating a DB wouldn’t help if we’re still working in the scope of one process.
Solution
Chuck out the Integrated Security parameter in the connection string when have a deal with LocalDB.
General Comments
Integrated Security is an option, which specifies that Windows account credentials are used for authentication (see details on MSDN and here). Having this option (value True or SSPI) is recommended for SQL Servers.
Meanwhile this option doesn’t make any difference for LocalDB servers. Regardless of this setting, LocalDB will still be a user instance, running under the account that started it. Basically, it’ll be as Integrated Security was set to True or SSPI. There is no way in LocalDB to prevent the user from accessing data in their database (e.g. by using SQL authorisation). Once the user has access to the database file, they can spin up their own LocalDB instance and open the database.
Hence all recommendations to specify the Integrated Security when connecting to LocalDB have no grounds.
Related
I am trying to port one of my asp.net MVC (V 4.0/ .Net Framework 4.5) to Azure as app service. My database is SQL Server and my application connects to it using Hybrid Connection. My application uses SQL Authentication to connect to database. Everything works fine when deployed to IIS server on one of our locally hosted servers, but the authentication feature breaks when deployed to Azure as an app service.
My controller code:
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public virtual ActionResult Login(LoginModel model, string returnUrl)
{
if (ModelState.IsValid)
{
//var v = Membership.GetAllUsers();
try
{
if (Membership.ValidateUser(model.UserName, model.Password))
{
FormsAuthentication.SetAuthCookie(model.UserName, model.RememberMe);
if (Url.IsLocalUrl(returnUrl))
{
return Redirect(returnUrl);
}
else
{
return RedirectToAction("Index", "Home");
}
}
else
{
ModelState.AddModelError("", "The user name or password provided is incorrect.");
}
}
catch (Exception ex)
{
ModelState.AddModelError("", ex.ToString());
}
}
Error on Azure:
System.Data.SqlClient.SqlException (0x80131904): Login failed for user
'OSUser'. 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, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource1 retry, DbConnectionOptions
userOptions, DbConnectionInternal oldConnection, DbConnectionInternal&
connection) at
System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection
outerConnection, DbConnectionFactory connectionFactory,
TaskCompletionSource1 retry, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource1 retry, DbConnectionOptions userOptions) at
System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource1 retry) at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource1
retry) at System.Data.SqlClient.SqlConnection.Open() at
System.Web.DataAccess.SqlConnectionHolder.Open(HttpContext context,
Boolean revertImpersonate) at
System.Web.DataAccess.SqlConnectionHelper.GetConnection(String
connectionString, Boolean revertImpersonation) at
System.Web.Security.SqlMembershipProvider.GetPasswordWithFormat(String
username, Boolean updateLastLoginActivityDate, Int32& status, String&
password, Int32& passwordFormat, String& passwordSalt, Int32&
failedPasswordAttemptCount, Int32& failedPasswordAnswerAttemptCount,
Boolean& isApproved, DateTime& lastLoginDate, DateTime&
lastActivityDate) at
System.Web.Security.SqlMembershipProvider.CheckPassword(String
username, String password, Boolean updateLastLoginActivityDate,
Boolean failIfNotApproved, String& salt, Int32& passwordFormat) at
System.Web.Security.SqlMembershipProvider.ValidateUser(String
username, String password) at
WebMatrix.WebData.SimpleMembershipProvider.ValidateUser(String
username, String password) at
USC.Controllers.AccountController.Login(LoginModel model, String
returnUrl) in D:\a\1\s\USC\Controllers\AccountController.cs:line 36
ClientConnectionId:b1f6b763-80f6-47f0-9a50-c70ab30635bd Error
Number:18456,State:1,Class:14
Any ideas??? Thanks!
The message "Login failed for User" is a generic error message that might have a variety of causes. The error message sent to the client does not include information about the reason for the login failure for security reasons.
You need to give this user logon permission to SQL Server and access to the database: Create a Login - SQL Server
It may be that the database you're connecting to was generated using an older version of the.NET Framework's aspnet regsql.exe tool when you deployed your app. Try using the same version of aspnet regsql that you used locally to create and configure the membership database. Maybe you just utilised SQL Express and the /App Data folder locally.
In both databases, compare the table structure. Please compare the AspNet Membership table.
You could even refer to : System.Data.SqlClient.SqlException: Login failed for user | The ASP.NET Forums
Troubleshooting: Login Failed for User 'x' | Microsoft Docs
Getting warning in the console on the SQL Server connection open:
Security Warning: The negotiated TLS 1.0 is an insecure protocol and is supported for backward compatibility only. The recommended protocol version is TLS 1.2 and later.
Error on every few minutes when performing any database query
ADO .Net BulkInsert
Microsoft.Data.SqlClient version: 2.0.0
System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.Data.SqlClient.TdsParser.ConsumePreLoginHandshake(Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean& marsCapable, Boolean& fedAuthRequired)
at Microsoft.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean withFailover, SqlAuthenticationMethod authType)
at Microsoft.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover)
at Microsoft.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout)
at Microsoft.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance)
at Microsoft.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, Boolean applyTransientFaultHandling, String accessToken, DbConnectionPool pool)
at Microsoft.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
at Microsoft.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
at Microsoft.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at Microsoft.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at Microsoft.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at Microsoft.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at Microsoft.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
at Microsoft.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
at Microsoft.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry, SqlConnectionOverrides overrides)
at Microsoft.Data.SqlClient.SqlConnection.Open(SqlConnectionOverrides overrides)
at Microsoft.Data.SqlClient.SqlBulkCopy.CreateOrValidateConnection(String method)
at Microsoft.Data.SqlClient.SqlBulkCopy.WriteRowSourceToServerAsync(Int32 columnCount, CancellationToken ctoken)
at Microsoft.Data.SqlClient.SqlBulkCopy.WriteToServer(DbDataReader reader)
Entity Framework Microsoft.EntityFrameworkCore version: 3.1.5
System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.Data.SqlClient.TdsParser.ConsumePreLoginHandshake(Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean& marsCapable, Boolean& fedAuthRequired)
at Microsoft.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean withFailover, SqlAuthenticationMethod authType)
at Microsoft.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover)
at Microsoft.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout)
at Microsoft.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance)
at Microsoft.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, Boolean applyTransientFaultHandling, String accessToken, DbConnectionPool pool)
at Microsoft.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
at Microsoft.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
at Microsoft.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at Microsoft.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at Microsoft.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at Microsoft.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at Microsoft.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
at Microsoft.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
at Microsoft.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry, SqlConnectionOverrides overrides)
at Microsoft.Data.SqlClient.SqlConnection.Open(SqlConnectionOverrides overrides)
at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.OpenDbConnection(Boolean errorsExpected)
at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.Open(Boolean errorsExpected)
at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReader(RelationalCommandParameterObject parameterObject)
at Microsoft.EntityFrameworkCore.Query.Internal.QueryingEnumerable`1.Enumerator.InitializeReader(DbContext _, Boolean result)
at Microsoft.EntityFrameworkCore.Storage.ExecutionStrategy.ExecuteImplementation[TState,TResult](Func`3 operation, Func`3 verifySucceeded, TState state)
at Microsoft.EntityFrameworkCore.Query.Internal.QueryingEnumerable`1.Enumerator.MoveNext()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
Both the have issue with Microsoft.Data.SqlClient.TdsParser.ConsumePreLoginHandshake
SQL Server 2008 SP3 already has enabled TLS 1.2
This problem started when I am getting the TLS 1.2 warning in the
console. Earlier everything was working fine from last 6 Months
I am trying to connect a C# application up to a WAMP hosted MySQL server created using PHPMyAdmin locally.
I am using the following connection string:
sqlConnection = new SqlConnection("server=tcp:127.0.0.1,3306;Database=mydb;uid=root");
The following is the result of this failed call:
-> Database Connection Failed!
Exception Caught: Internal connection fatal error.
at System.Data.SqlClient.TdsParserStateObject.TryProcessHeader()
at System.Data.SqlClient.TdsParserStateObject.TryPrepareBuffer()
at System.Data.SqlClient.TdsParserStateObject.TryReadByteArray(Byte[] buff, Int32 offset, Int32 len, Int32& totalRead)
at System.Data.SqlClient.TdsParser.ConsumePreLoginHandshake(Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean& marsCapable)
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(ServerInfoserverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover)
at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfoserverInfo, String newPassword, SecureString newSecurePassword, Boolean redirect edUserInstance, 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)
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, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnectionOptionsuserOptions)
at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnectionOptions userOptions)
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(DbConnectionowningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnectionouterConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
at System.Data.SqlClient.SqlConnection.Open()
Can anybody make any sense of that - because it means next to nothing to me!
You're using the wrong class, you need to get the ADO.NET MySQL library and use the MySqlConnection instead.
i know this question must be answered before but i can't find a solution to my case.
i created a service-based database in visual studio 2013, and i want to connect to this database.
i created the dbSet, the class heritating from DbContext and added the entitiframework reference everything is fine, except the connectionstring
<connectionStrings>
<add name ="master" connectionString="Data Source=(localdb)\v11.0;
AttachDbFilename=c:\users\reda\documents\visual studio 2013\Projects\Testing new things\Testing new things\master.mdf;
Integrated Security=True;"/> </connectionStrings>
when i run my program i get a Data.Entity.Core.ProviderIncompatibleException exception; which means that it can't access the database, where am i wrong?
btw, is there any other solution to work with a local database?
the error message is:
Unhandled Exception: System.Data.Entity.Core.ProviderIncompatibleException: An e
rror occurred accessing the database. This usually means that the connection to
the database failed. Check that the connection string is correct and that the ap
propriate DbContext constructor is being used to specify it or find it in the ap
plication's config file. See http://go.microsoft.com/fwlink/?LinkId=386386 for i
nformation on DbContext and connections. See the inner exception for details of
the failure. ---> System.Data.Entity.Core.ProviderIncompatibleException: The pro
vider did not return a ProviderManifestToken string. ---> System.Data.SqlClient.
SqlException: A network-related or instance-specific error occurred while establ
ishing a connection to SQL Server. The server was not found or was not accessibl
e. 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. The specified LocalDB instance does not exist.
)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception
, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObj
ect stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
at System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternal
ConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Bool
ean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean withFa
ilover)
at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo
serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSn
iOpenTimeout, TimeoutTimer timeout, Boolean withFailover)
at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo
serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirect
edUserInstance, SqlConnectionString connectionOptions, SqlCredential credential,
TimeoutTimer timeout)
at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTime
r timeout, SqlConnectionString connectionOptions, SqlCredential credential, Stri
ng newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance)
at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdent
ity identity, SqlConnectionString connectionOptions, SqlCredential credential, O
bject providerInfo, String newPassword, SecureString newSecurePassword, Boolean
redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData r
econnectSessionData)
at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOp
tions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConn
ectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConn
ectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConne
ctionPoolKey poolKey, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owning
Object, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection o
wningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection
)
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection ow
ningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean o
nlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& co
nnection)
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection ow
ningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbCon
nectionInternal& connection)
at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection
owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions
, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(Db
Connection outerConnection, DbConnectionFactory connectionFactory, TaskCompletio
nSource`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 re
try)
at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
at System.Data.SqlClient.SqlConnection.Open()
at System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.<Ope
n>b__38(DbConnection t, DbConnectionInterceptionContext c)
at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispat
ch[TTarget,TInterceptionContext](TTarget target, Action`2 operation, TIntercepti
onContext interceptionContext, Action`3 executing, Action`3 executed)
at System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.Open
(DbConnection connection, DbInterceptionContext interceptionContext)
at System.Data.Entity.SqlServer.SqlProviderServices.<>c__DisplayClass31.<Usin
gConnection>b__2f()
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.<>c__DisplayClass
1.<Execute>b__0()
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](
Func`1 operation)
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Action op
eration)
at System.Data.Entity.SqlServer.SqlProviderServices.UsingConnection(DbConnect
ion sqlConnection, Action`1 act)
at System.Data.Entity.SqlServer.SqlProviderServices.UsingMasterConnection(DbC
onnection sqlConnection, Action`1 act)
at System.Data.Entity.SqlServer.SqlProviderServices.GetDbProviderManifestToke
n(DbConnection connection)
at System.Data.Entity.Core.Common.DbProviderServices.GetProviderManifestToken
(DbConnection connection)
--- End of inner exception stack trace ---
at System.Data.Entity.Core.Common.DbProviderServices.GetProviderManifestToken
(DbConnection connection)
at System.Data.Entity.Utilities.DbProviderServicesExtensions.GetProviderManif
estTokenChecked(DbProviderServices providerServices, DbConnection connection)
--- End of inner exception stack trace ---
at System.Data.Entity.Utilities.DbProviderServicesExtensions.GetProviderManif
estTokenChecked(DbProviderServices providerServices, DbConnection connection)
at System.Data.Entity.Infrastructure.DefaultManifestTokenResolver.<>c__Displa
yClass1.<ResolveManifestToken>b__0(Tuple`3 k)
at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Fu
nc`2 valueFactory)
at System.Data.Entity.Infrastructure.DefaultManifestTokenResolver.ResolveMani
festToken(DbConnection connection)
at System.Data.Entity.Utilities.DbConnectionExtensions.GetProviderInfo(DbConn
ection connection, DbProviderManifest& providerManifest)
at System.Data.Entity.DbModelBuilder.Build(DbConnection providerConnection)
at System.Data.Entity.Internal.LazyInternalContext.CreateModel(LazyInternalCo
ntext internalContext)
at System.Data.Entity.Internal.RetryLazy`2.GetValue(TInput input)
at System.Data.Entity.Internal.LazyInternalContext.InitializeContext()
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.get_InternalContext()
at System.Data.Entity.Internal.Linq.InternalSet`1.ActOnSet(Action action, Ent
ityState newState, Object entity, String methodName)
at System.Data.Entity.Internal.Linq.InternalSet`1.Add(Object entity)
at System.Data.Entity.DbSet`1.Add(TEntity entity)
at Testing_new_things.Program.Main(String[] args) in c:\Users\Reda\Documents\
Visual Studio 2013\Projects\Testing new things\Testing new things\Program.cs:lin
e 19
Press any key to continue . . .
Your connection string is missing the provider information. Change it to this
<add name ="master" connectionString="Data Source=(localdb)\v11.0;
AttachDbFilename=c:\users\reda\documents\visual studio 2013\Projects\Testing new things\Testing new things\master.mdf;
Integrated Security=True;"
providerName="System.Data.SqlClient"/>
I'm trying to connect to a SQL Server database from C#, but keep get thrown by an exception:
System.Data.SqlClient.SqlExceptionwhen trying toopen()` the connection.
I have created a simple web form, with two text boxes: usernameTextBox, and passwordTextBox, and a 'sign in' button.
For now, just for testing purposes, what I'm trying to do is to insert values into a users table, when the sign in button is clicked, so this is what I have so far:
using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _default : System.Web.UI.Page
{
protected void signInButton_Click(object sender, EventArgs e)
{
string connection_str="Data Source=.\\SQLEXPRESS;"+
"AttachDbFilename=|DataDirectory|\\project.mdf;"+
"Integrated Security=True;"+
"User Instance=True";
SqlConnection connection = new SqlConnection(connection_str);
connection.Open();
SqlCommand command = new SqlCommand();
command.Connection = connection;
command.CommandText="INSERT INTO users VALUES ('"+userNameTextBox.Text+"','"+passwordTextBox.Text+"');";
command.ExecuteNonQuery();
connection.Close();
}
}
As stated above, this fails at connection.Open();.
The project.mdf file is located at the VS Project folder, inside the 'App_Data' folder.
Does anyone have an idea about what can cause the Open() to fail?
I can also provide the 'exception info', if it is needed.
Thanks.
BTW, When should the connection be established? at the 'sign-in-button handler', or in the 'Page_Load' handler?
EDIT
System.Data.SqlClient.SqlException was unhandled by user code
HResult=-2146232060
Message=Cannot open user default database. Login failed.
Login failed for user 'J***-PC\J***'.
Source=.Net SqlClient Data Provider
ErrorCode=-2146232060
Class=11
LineNumber=65536
Number=4064
Procedure=""
Server=\\.\pipe\8EDE82F8-E3AA-40\tsql\query
State=1
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.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
at System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK)
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 _default.signInButton_Click(Object sender, EventArgs e) in c:\Users\J***\Documents\Visual Studio 2012\Projects\db5774\default.aspx.cs:line 23
at System.Web.UI.WebControls.Button.OnClick(EventArgs e)
at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)
at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
InnerException:
So the exception says:
Message=Cannot open user default database. Login failed.
Login failed for user 'J***-PC\J***'.
That would mean the user has no access to the default database, usually master.
Alter the user so it can access the default database, or better, point the default to another database.
Use this sql for that:
alter login [username] with default_database = database_that_user_can_access
Or change the connection string by adding this:
Database=database_that_user_can_access
Try this:
AttachDbFilename=~\..\ProjectName\App_Data\project.mdf