Server Error in '/' Application.

Cannot open database "DBqbu" requested by the login. The login failed.
Login failed for user 'dangbo'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: Cannot open database "DBqbu" requested by the login. The login failed.
Login failed for user 'dangbo'.

Source Error:


Line 31:         Application.Lock();
Line 32:         Application["online"] = (Convert.ToInt16(Application["online"].ToString()) + 1).ToString();
Line 33:         CounterController.Update(CounterController.GetCounter(1)+1);
Line 34:         Application["TongSo"] = CounterController.GetCounter(1).ToString() ;
Line 35:         Application.UnLock();

Source File: c:\New\web\web\danguy.quangbinhuni.edu.vn\Global.asax    Line: 33

Stack Trace:


[SqlException (0x80131904): Cannot open database "DBqbu" requested by the login. The login failed.
Login failed for user 'dangbo'.]
   System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +428
   System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +65
   System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +117
   System.Data.SqlClient.SqlConnection.Open() +122
   System.Data.Linq.SqlClient.SqlConnectionManager.UseConnection(IConnectionUser user) +44
   System.Data.Linq.SqlClient.SqlProvider.get_IsSqlCe() +45
   System.Data.Linq.SqlClient.SqlProvider.InitializeProviderMode() +20
   System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) +57
   System.Data.Linq.Table`1.System.Linq.IQueryProvider.Execute(Expression expression) +49
   System.Linq.Queryable.First(IQueryable`1 source) +269
   VNPTQuangBinh.Bussiness.BO.CounterController.GetCounter(Int32 LoaiMenu) in D:\Cac du an phan mem\DanguyQBU\VNPTQuangBinh.Bussiness\BO\CounterController.cs:25
   ASP.global_asax.Session_Start(Object sender, EventArgs e) in c:\New\web\web\danguy.quangbinhuni.edu.vn\Global.asax:33
   System.Web.SessionState.SessionStateModule.RaiseOnStart(EventArgs e) +8880868
   System.Web.SessionState.SessionStateModule.CompleteAcquireState() +237
   System.Web.SessionState.SessionStateModule.BeginAcquireState(Object source, EventArgs e, AsyncCallback cb, Object extraData) +504
   System.Web.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +66
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155


Version Information: Microsoft .NET Framework Version:2.0.50727.8000; ASP.NET Version:2.0.50727.8001