[SqlException (0x80131904): 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)]
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +578
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +84
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +1648583
System.Data.SqlClient.SqlConnection.Open() +258
WebPortal.DataAccess.SqlHelper.CreateCommand(SqlConnection connection, CommandType commandType, String commandText, Object[] values) +80
WebPortal.DataAccess.SqlHelper.ExecuteDataSet(String connectionString, CommandType commandType, String commandText, DbParameter[] parameters) +139
WebPortal.DataAccess.ArticleDA.GetDataSetByMenuID(Int32 menuid, Int32 noticeviewperpage, Int32 pageindex) +273
UControl.NoticeViewKhoa.Page_Load(Object sender, EventArgs e) +173
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +42
System.Web.UI.Control.OnLoad(EventArgs e) +132
System.Web.UI.Control.LoadRecursive() +66
System.Web.UI.Control.LoadRecursive() +191
System.Web.UI.Control.LoadRecursive() +191
System.Web.UI.Control.LoadRecursive() +191
System.Web.UI.Control.LoadRecursive() +191
System.Web.UI.Control.LoadRecursive() +191
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2428
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